Re: How does one attach a manifest file to a D executable on Windows?
On Sunday, 2 June 2024 at 21:46:41 UTC, solidstate1991 wrote: Well, it turns out I used the windres found in mingw instead of `rc.exe` since the latter cannot be found anywhere on my PC, even after reinstalling stuff. I need to hunt it down somehow. rc.exe comes with the Windows SDK - it gets installed in one of the subfolders of "C:\Program Files (x86)\Windows Kits\10\bin" (on my machine it's in "10.0.22000.0\x64").
Re: How does one attach a manifest file to a D executable on Windows?
On Saturday, 25 May 2024 at 13:13:08 UTC, solidstate1991 wrote: No, I meant something like this: https://learn.microsoft.com/en-us/windows/win32/controls/cookbook-overview Not tested but from memory I do this: 1) Copy that first XML snippet from the page you linked, save to a file called example.exe.manifest 2) Create a resource script file called resources.rc, with this at the top: 1 24 "example.exe.manifest" 3) Compile it with rc.exe 4) Include the resulting resources.res on your DMD command line You might also need to call InitCommonControls or InitCommonControlsEx before creating any windows.
Re: Getting a total from a user defined variable
On Thursday, 20 April 2023 at 19:41:21 UTC, Joel wrote: // how do I get the total of ages added together? p.map!(x => x.age).sum();
Re: How can a function pointer required to be extern(C)?
On Wednesday, 12 April 2023 at 20:36:59 UTC, H. S. Teoh wrote:
---snip---
extern(C) void* abc(void*) {return null;}
alias FuncPtr = typeof();
You can also express it like this:
```d
extern(C) alias FuncPtr = void* function(void*);
```
Re: staticMap but with two arguments
On Thursday, 9 February 2023 at 19:17:55 UTC, Ali Çehreli wrote: I could not figure out eliminating the hard-coded 4. Can we introspect the parameter list of a template like 'fun' in the example? If we could, then we could get 4 that way. Thank you for this. I don't mind hard-coding the N argument. TemplateArgsOf needs an instantiated template but maybe ```enum N = count(fun.stringof, ',') + 1``` is good enough.
Re: staticMap but with two arguments
On Monday, 6 February 2023 at 09:17:07 UTC, Ali Çehreli wrote:
I adapted staticMap's implementation to two sets of arguments:
So I've got this implementation, but wonder if I can generalise
the arg splitting portion rather than write it manually for each
N?
```d
template staticMapN(size_t N, alias fun, args...) if (args.length
% N == 0) {
alias staticMapN = AliasSeq!();
static foreach (i; 0 .. args.length / N)
static if (N == 1)
staticMapN = AliasSeq!(staticMapN, fun!(args));
else static if (N == 2)
staticMapN = AliasSeq!(staticMapN, fun!(args[0 .. $ /
N][i], args[$ / N .. ($ / N) * 2][i]));
else static if (N == 3)
staticMapN = AliasSeq!(staticMapN, fun!(args[0 .. $ /
N][i], args[$ / N .. ($ / N) * 2][i], args[($ / N) * 2 .. ($ / N)
* 3][i]));
// etc
}
```
Re: staticMap but with two arguments
On Monday, 6 February 2023 at 09:17:07 UTC, Ali Çehreli wrote: I adapted staticMap's implementation to two sets of arguments: Thanks Ali, that's perfect. I thought of splitting the args in half a few hours later but hadn't got around to trying it.
staticMap but with two arguments
I have two AliasSeqs: one containing a function's parameters
(SourceSeq), the other containing the types I want to convert
said parameters to (TargetSeq). I'd use something like staticMap
to call the conversion function with both a parameter from
SourceSeq and a type from TargetSeq, and return an AliasSeq of
converted values which will be forwarded to another function.
staticMap's "fun" can only be instantiated with a single
argument, while I need it to work with two.
E.g.:
```
template toTarget(alias source, Target) {
static if (is(typeof(source) == int) && is(Target == string))
// for example, convert int to string
}
alias TargetSeq = Parameters!targetFunc;
auto wrapperFunc(A...)(A) {
alias SourceSeq = __traits(parameters);
return targetFunc(staticMap!(toTarget, SourceSeq)); // How
would I call staticMap (or something similar) with SourceSeq
*and* TargetSeq?
}
```
I could build the list of converted values manually but I wanted
something smart (like staticMap) to do it inline. I thought
ApplyLeft/Right could help but couldn't get my head around it.
Re: Mixin helper help
On Friday, 13 January 2023 at 14:32:44 UTC, Salih Dincer wrote: Why not directly use the mixin template for opDispatch()? My opDispatch generates code based on the arguments passed, interpolating variable names and functions based on the type. I wanted to remove the double braces in my static foreach (needed as I declared some aliases inside but since it creates a scope those new variables can't be referred to outside of it). I saw Adam's post here http://dpldocs.info/this-week-in-d/Blog.Posted_2022_12_26.html showing use of a "helper" template, and I was trying to adapt it. I've since just dropped the double braces and removed the aliases. It's not as clean but works.
Mixin helper help
I'm obviously doing something wrong, but don't quite understand.
```d
mixin template helper() {
mixin("writeln(12);");
}
struct Foo {
void opDispatch(string name)() {
import std.stdio;
mixin helper!();
//mixin("writeln(12);");
}
}
void main() {
Foo.init.opDispatch!"bar"();
}
```
The compiler emits these errors about the mixin ("writeln(12);"):
unexpected `(` in declarator
basic type expected, not `12`
found `12` when expecting `)`
no identifier for declarator `writeln(_error_)`
semicolon expected following function declaration
declaration expected, not `)`
Why does the commented code work but the mixin not? Thanks for
any pointers.
Re: How to add struct definition?
On Friday, 9 September 2022 at 00:16:01 UTC, Injeckt wrote: I need to add this struct definition in my project. But how to do that? This structure: https://docs.microsoft.com/en-us/windows/win32/api/iptypes/ns-iptypes-ip_adapter_info It's defined in DRuntime, so you can just import the module like this: import core.sys.windows.iptypes;
Re: winapi, dll
On Thursday, 15 October 2020 at 20:13:37 UTC, Atmosfear wrote:
On Thursday, 15 October 2020 at 16:32:06 UTC, Imperatorn wrote:
On Thursday, 15 October 2020 at 12:45:42 UTC, Atmosfear wrote:
I didn't find how to call the queryperformancecounter
function. I tried this. Returns errors, doesn't know what
BOOL and LARGE_INTEGER are.
import core.sys.windows.windows;
import core.sys.windows.w32api;
import core.sys.windows.winbase;
pragma(lib, "kernel32");
extern (Windows)
{
BOOL QueryPerformanceCounter(LARGE_INTEGER
*lpPerformanceCount);
}
void main()
{}
It's already defined. Just use QueryPerformanceCounter, (no
extern).
I'm a newby. Can you show me an example? In which module is it?
Just import core.sys.windows.windows and call the function like
so:
---
import core.sys.windows.windows;
void main() {
LARGE_INTEGER pc;
QueryPerformanceCounter();
}
---
Re: I need "windowsx.d" Someone can send It to me?
On Friday, 25 September 2020 at 15:03:56 UTC, Marcone wrote: I need windowsx.d but for I don't know the reason is not in dmd. Someone that have it can send to me? I don't know convert windowsx.h to windowsx.d windowsx.h is mostly a bunch of macros that forward to functions elsewhere in the SDK. Yes, it's handy, but you can get by without it in case you don't manage to get it translated to D. Open windowsx.h in your editor, find the macro you want to use, look across to the right to see what the macro expands to, and use that in your code instead. A lot of the macros that simply cast between HBITMAP, HPALETTE, HFONT, HPEN, HGDIOBJ etc are redundant because in D they're all just aliases for void*.
Re: Access violation when using IShellFolder2
On Thursday, 10 September 2020 at 13:30:15 UTC, FreeSlave wrote: Thanks. I tried this, but VarDateFromStr does not succeed for me. It turns out the shell embeds some control characters in the string, specifically 8206 and 8207. So remove those before passing it to VarDateFromStr. auto temp = strRet.pOleStr[0 .. lstrlenW(strRet.pOleStr)] .replace(cast(wchar)8206, "") .replace(cast(wchar)8207, ""); DATE date; VarDateFromStr((temp ~ '\0').ptr, LOCALE_USER_DEFAULT, 0, );
Re: Access violation when using IShellFolder2
On Wednesday, 9 September 2020 at 22:44:50 UTC, FreeSlave wrote: Btw do you know how to parse a date returned by GetDetailsOf? Couldn't find any examples in C++. I actually can see digits representing date and time as a part of the string, but I would prefer to use some winapi function to translate it into some time type instead of manually parsing the result. You could look at passing the str.pOleStr field in the SHELLDETAILS you got from GetDetailsOf to VarDateFromStr. It will give you a DATE value that VariantTimeToSystemTime will convert to a SYSTEMTIME from which you can get the years, months, days etc. For example: SHELLDETAILS details; GetDetailsOf(pidl, 3, ); DATE date; VarDateFromStr(details.str.pOleStr, LOCALE_USER_DEFAULT, 0, ); SYSTEMTIME st; VariantTimeToSystemTime(date, ); auto year = st.wYear; auto month = st.wMonth; You can convert that into a more D-friendly SysTime object using SYSTEMTIMEToSysTime from the std.datetime package.
Re: Access violation when using IShellFolder2
On Tuesday, 8 September 2020 at 22:24:22 UTC, FreeSlave wrote:
However if I change the type of recycleBin variable to
IShellFolder (not IShellFolder2), the crash does not happen.
Does IShellFolder2 require some special handling?
The issue is caused by druntime's definition of IShellFolder2. To
fix it temporarily, just redefine it in your module somewhere:
interface IShellFolder2 : IShellFolder {
HRESULT GetDefaultSearchGUID(GUID*);
HRESULT EnumSearches(IEnumExtraSearch*);
HRESULT GetDefaultColumn(DWORD, ULONG*, ULONG*);
HRESULT GetDefaultColumnState(UINT, SHCOLSTATEF*);
HRESULT GetDetailsEx(LPCITEMIDLIST, const(SHCOLUMNID)*,
VARIANT*);
HRESULT GetDetailsOf(LPCITEMIDLIST, UINT, SHELLDETAILS*);
HRESULT MapColumnToSCID(UINT, SHCOLUMNID*);
}
IShellFolder2 isn't the only culprit - IShellView2 will need
fixing too if you intend to use it. There are probably others as
well.
Re: final switch problem
On Saturday, 13 June 2020 at 15:33:55 UTC, Boris Carvajal wrote: On Saturday, 13 June 2020 at 09:02:21 UTC, John Chapman wrote: Is this a bug or have I made a mistake? This worked a few days ago and I haven't changed my setup since then. https://issues.dlang.org/show_bug.cgi?id=19548 Your code triggers it by using "-debug" option on https://run.dlang.io/ using DMD Hmm, compiling with -release makes it work. Not a huge issue, I'll just avoid final switches in debug mode until it's fixed. Thanks.
final switch problem
If I use a final switch and import std.uni (or any other module
that imports it, such as std.string), I'm getting unresolved
external symbol errors with DMD 2.092.
This code triggers the issue:
---
module test;
import std.uni;
enum Cheese { cheddar, edam }
void test(Cheese cheese) {
final switch (cheese) {
case Cheese.cheddar: break;
case Cheese.edam: break;
}
}
void main() {
test(Cheese.cheddar);
}
---
error LNK2019: unresolved external symbol "pure nothrow @nogc
@safe void
core.internal.switch_.__switch_error!().__switch_error(immutable(char)[], ulong)" (_D4core8internal7switch___T14__switch_errorZQrFNaNbNiNfAyamZv) referenced in function _Dmain
If I remove "final" and add a default case, it compiles fine. Is
this a bug or have I made a mistake? This worked a few days ago
and I haven't changed my setup since then.
Re: How to get the pointer of "this" ?
On Tuesday, 26 May 2020 at 13:37:22 UTC, Vinod K Chandran wrote:
On Tuesday, 26 May 2020 at 12:41:20 UTC, John Chapman wrote:
On Monday, 25 May 2020 at 16:26:31 UTC, Vinod K Chandran wrote:
Here is my full code. Please take a look.
https://pastebin.com/av3nrvtT
Change line 124 to:
SetWindowSubclass(this.mHandle, SUBCLASSPROC(),
UINT_PTR(subClsID), cast(DWORD_PTR)cast(void*)this);
That is, change `` to `cast(void*)this`.
Hi,
Thanks for the reply. That will work like charm but we need to
change the code in subclassed button's WndProc like this--
extern(Windows)
private LRESULT btnWndProc(HWND hWnd, UINT message, WPARAM
wParam, LPARAM lParam, UINT_PTR scID, DWORD_PTR refData) {
try {
Button thisBtn = cast(Button)cast(void*)refData;
{
catch (Exception e) {}
Yes, that should work.
Re: How to get the pointer of "this" ?
On Monday, 25 May 2020 at 16:26:31 UTC, Vinod K Chandran wrote: Here is my full code. Please take a look. https://pastebin.com/av3nrvtT Change line 124 to: SetWindowSubclass(this.mHandle, SUBCLASSPROC(), UINT_PTR(subClsID), cast(DWORD_PTR)cast(void*)this); That is, change `` to `cast(void*)this`.
Overload function template for rectangular array
Is it possible to overload a function template for rectangular
arrays? Is there any way to tell them apart from normal ones?
void foo(T)(T[] a) {}
void foo(T)(T[][] a) {}
auto ra = new int[][](5, 5);
ra.foo(); // matches both
Thanks for any hints.
Re: Easy way to format int in pragma msg ?
On Thursday, 14 May 2020 at 09:49:15 UTC, wjoe wrote:
Is there an easy way to print an int in hexadecimal, octal or
binary representation ?
The documentation on pragma(msg, ...) and a quick web search
didn't provide an answer.
import std.string;
pragma(msg, format("%x", 10));
%x = hex
%o = octal
%b = binary
Re: Win32 Api: How create Open/"Save as" Dialog?
On Saturday, 11 January 2020 at 10:34:34 UTC, Marcone wrote:
This code works, but I can't get file Path. Someone can help me?
import std;
import core.sys.windows.windows;
pragma(lib, "comdlg32");
void main(){
OPENFILENAME ofn;
wchar* szFileName;
You need to supply a buffer, not a pointer:
wchar[MAX_PATH] szFileName;
(cast(byte*)& ofn)[0 .. ofn.sizeof] = 0;
ofn.lStructSize = ofn.sizeof;
ofn.hwndOwner = null;
The above lines are unnecessary as D structs are automatically
initialized and lStructSize is already filled in.
ofn.lpstrFilter = "Text Files (*.txt)\0*.txt\0All Files
(*.*)\0*.*\0";
ofn.lpstrFile = szFileName;
It wants a pointer to your buffer:
ofn.lpstrFile = szFileName.ptr;
ofn.nMaxFile = MAX_PATH;
ofn.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST |
OFN_HIDEREADONLY;
ofn.lpstrDefExt = "txt";
if(GetOpenFileNameW()){
writeln(szFileName); // Print null
writeln(ofn.lpstrFile); // Print null
You'll need to slice the buffer to the right length:
import core.stdc.wchar_ : wcslen;
writeln(ofn.lpstrFile[0 .. wcslen(ofn.lpstrFile.ptr)]);
}
}
Re: Release D 2.089.0
On Wednesday, 6 November 2019 at 01:16:00 UTC, Manu wrote: On Tue, Nov 5, 2019 at 5:14 PM Manu wrote: On Tue, Nov 5, 2019 at 1:20 PM John Chapman via Digitalmars-d-announce wrote: > > On Tuesday, 5 November 2019 at 19:05:10 UTC, Manu wrote: > > Incidentally, in your sample above there, `a` and `b` are > > not shared... why not just write: `cas(, null, b);` ?? > > If source data is not shared, you shouldn't cast to shared. > > Because casts were needed in 2.088 and earlier and I just > updated to 2.089, unaware of the API change. Should I log > `null` not working as a bug? Yes But I also think you should update your code to not perform the casts. Can you confirm that the null works when removing the shared casts? Yes and no - it compiles when removing the casts, but AVs at runtime. Bug filed: https://issues.dlang.org/show_bug.cgi?id=20359
Re: Release D 2.089.0
On Tuesday, 5 November 2019 at 19:05:10 UTC, Manu wrote: Incidentally, in your sample above there, `a` and `b` are not shared... why not just write: `cas(, null, b);` ?? If source data is not shared, you shouldn't cast to shared. Because casts were needed in 2.088 and earlier and I just updated to 2.089, unaware of the API change. Should I log `null` not working as a bug?
Re: Release D 2.089.0
On Tuesday, 5 November 2019 at 07:52:12 UTC, John Chapman wrote:
Sure - this AVs on DMD 2.088 Windows:
import core.atomic;
void main() {
Object a, b = new Object;
cas(cast(shared), null, cast(shared)b);
}
Sorry, I meant it AVs 2.089, but works on 2.088.
Re: Release D 2.089.0
On Tuesday, 5 November 2019 at 06:44:29 UTC, Manu wrote:
On Mon., 4 Nov. 2019, 2:05 am John Chapman via
Digitalmars-d-announce, < digitalmars-d-announce@puremagic.com>
wrote:
Something has changed with core.atomic.cas - it used to work
with `null` as the `ifThis` argument, now it throws an AV. Is
this intentional?
If I use `cast(shared)null` it doesn't throw but if the change
was deliberate shouldn't it be mentioned?
Changes were made because there were a lot of problems with
that module...
but the (reasonably comprehensive) unit tests didn't reveal any
such
regressions. We also build+test many popular OSS projects via
buildkite,
and there weren't problems.
Can you show the broken code?
Sure - this AVs on DMD 2.088 Windows:
import core.atomic;
void main() {
Object a, b = new Object;
cas(cast(shared), null, cast(shared)b);
}
Re: Release D 2.089.0
On Sunday, 3 November 2019 at 13:35:36 UTC, Martin Nowak wrote: Glad to announce D 2.089.0, ♥ to the 44 contributors. This release comes with corrected extern(C) mangling in mixin templates, atomicFetchAdd and atomicFetchSub in core.atomic, support for link driver arguments, better support of LDC in dub, and plenty of other bug fixes and improvements. http://dlang.org/download.html http://dlang.org/changelog/2.089.0.html -Martin Something has changed with core.atomic.cas - it used to work with `null` as the `ifThis` argument, now it throws an AV. Is this intentional? If I use `cast(shared)null` it doesn't throw but if the change was deliberate shouldn't it be mentioned?
Re: ... use of ... is hidden by ...; use alias ... to introduce base class overload set ??
On Sunday, 20 October 2019 at 21:45:35 UTC, Robert M. Münch wrote:
class myWidget : Observer!message {...}
class FilterSubject : SubjectObject!message {
Disposable subscribe(myWidget observer){...}
}
I tried to add "alias subscribe = SubjectObject.subscribe;" in
different places, but that didn't help. Nor do I have any how
that should help...
This should work:
class FilterSubject : SubjectObject!message {
alias subscribe = typeof(super).subscribe;
Disposable subscribe(myWidget observer){...}
}
Re: What is the alternative to the setlocale function of c in D? Thank you.
On Sunday, 27 January 2019 at 16:23:42 UTC, FrankLike wrote:
On Sunday, 27 January 2019 at 10:44:04 UTC, John Chapman wrote:
On Sunday, 27 January 2019 at 06:14:15 UTC, FrankLike wrote:
On Saturday, 26 January 2019 at 09:33:33 UTC, John Chapman
wrote:
What has that code got to do with setting the console's
font? So you need to add more code to accomplish that.
You don't need to set the font to achieve the goal, why not?
This should work:
const(char)[] toCodePage(const(char)[] s, uint codePage = 0) {
import core.sys.windows.winnls, std.utf;
foreach (char c; s) {
if (c >= 0x80) {
auto temp = s.toUTF16z();
char[] result;
if ((result.length = WideCharToMultiByte(codePage, 0,
temp, -1, null, 0, null, null)) != 0)
WideCharToMultiByte(codePage, 0, temp, -1, result.ptr,
cast(int)result.length, null, null);
return result;
}
}
return s;
}
void main() {
import core.sys.windows.wincon, std.stdio;
SetConsoleOutputCP(936); // Simplified Chinese codepage
writeln("字符".toCodePage(936));
}
Yes.
extern(C) int setlocale(int,char*);
static this()
{
import core.stdc.wchar_;
import core.stdc.stdio;
fwide(core.stdc.stdio.stdout,1);
setlocale(0,cast(char*)"china");
}
///
it's simple than yours,and don't need convert every string,why
not work after D2.0.78.1?
I've no idea, sorry. A quick scan of D's changelogs between those
versions doesn't reveal anything relevant. But I wonder how your
code ever worked - on Windows, calling setlocale with "china"
returns null, which means it's not a valid locale, so did nothing.
This does the right thing:
extern(C) int _cwprintf(const(wchar)*, ...);
void main() {
SetConsoleOutputCP(936);
_cwprintf("字符\n");
}
Re: What is the alternative to the setlocale function of c in D? Thank you.
On Sunday, 27 January 2019 at 06:14:15 UTC, FrankLike wrote:
On Saturday, 26 January 2019 at 09:33:33 UTC, John Chapman
wrote:
What has that code got to do with setting the console's font?
So you need to add more code to accomplish that.
You don't need to set the font to achieve the goal, why not?
This should work:
const(char)[] toCodePage(const(char)[] s, uint codePage = 0) {
import core.sys.windows.winnls, std.utf;
foreach (char c; s) {
if (c >= 0x80) {
auto temp = s.toUTF16z();
char[] result;
if ((result.length = WideCharToMultiByte(codePage, 0, temp,
-1, null, 0, null, null)) != 0)
WideCharToMultiByte(codePage, 0, temp, -1, result.ptr,
cast(int)result.length, null, null);
return result;
}
}
return s;
}
void main() {
import core.sys.windows.wincon, std.stdio;
SetConsoleOutputCP(936); // Simplified Chinese codepage
writeln("字符".toCodePage(936));
}
Re: What is the alternative to the setlocale function of c in D? Thank you.
On Saturday, 26 January 2019 at 06:03:25 UTC, FrankLike wrote:
On Friday, 25 January 2019 at 15:05:50 UTC, John Chapman wrote:
On Friday, 25 January 2019 at 14:23:15 UTC, FrankLike wrote:
I need to set the font by the code now, because I need to do
the installer, can't let this installer set the properties on
each computer?
SetCurrentConsoleFontEx perhaps?
https://docs.microsoft.com/en-us/windows/console/setcurrentconsolefontex
That's so much code than next code.
///
extern(C) int setlocale(int,char*);
static this()
{
import core.stdc.wchar_;
import core.stdc.stdio;
fwide(core.stdc.stdio.stdout,1);
setlocale(0,cast(char*)"china");
}
///
But After D2.078.1,it's not work.
Why?
Thank you.
What has that code got to do with setting the console's font? So
you need to add more code to accomplish that.
Re: What is the alternative to the setlocale function of c in D? Thank you.
On Friday, 25 January 2019 at 14:23:15 UTC, FrankLike wrote: I need to set the font by the code now, because I need to do the installer, can't let this installer set the properties on each computer? SetCurrentConsoleFontEx perhaps? https://docs.microsoft.com/en-us/windows/console/setcurrentconsolefontex
Re: How to split strings into AA using phobos
On Tuesday, 11 December 2018 at 08:20:32 UTC, Arun Chandrasekaran
wrote:
A typical example would be to split the HTTP query string into
an AA.
vibe.d has req.queryString, but no convenient wrapper to access
it as an AA.
http://localhost/hello?name=abc=123
I've got this far.
auto arr = req.queryString.splitter('&').map!(a =>
a.splitter('='));
Thanks
req.queryString[req.queryString.indexOf('?') + 1 .. $]
.splitter('&')
.map!(a => a.splitter('='))
.map!(a => tuple(a.front, a.back))
.assocArray
Re: ElementType of MapResult is a delegate??
On Saturday, 8 December 2018 at 13:02:00 UTC, Yuxuan Shui wrote:
This surprised me A LOT:
https://d.godbolt.org/z/82a_GZ
So if I call something.map!().array, I get an array of
delegates? That makes no sense to me.
But in your example, "(a) =>" returns "{return tmp;}", which is a
delegate. Just write "(a) => tmp", or invoke the delegate by
turning it into a call: "{return tmp;}()".
Ambiguous virtual function
I get an "ambiguous virtual function" error when I compile this:
interface I {
void fun();
}
mixin template F() {
void fun() {}
}
class C : I {
mixin F;
mixin F;
}
But the error doesn't occur with this:
class C : I {
mixin F;
void fun() {}
}
Is the compiler giving the non-mixed-in function special
treatment?
Re: Function signature as string
On Thursday, 29 November 2018 at 21:31:57 UTC, Neia Neutuladh
wrote:
On Thu, 29 Nov 2018 21:11:06 +, John Chapman wrote:
Is there any way to get a string representing a function's
exact signature as declared in the source? I can generate it
myself using reflection but it might not be 100% verbatim so
wanted to know if there's anything built in?
foreach (m; __traits(allMembers, T)) {
alias member = __traits(getMember, T, m);
string signature = // Call some function to get "member"'s
signature as a string
}
typeof().stringof should do it:
void bar(string s, ref Foo!int i) {}
void main()
{
writeln(typeof().stringof);
}
prints: void function(string s, ref Foo!int i)
That does the trick - thanks.
Function signature as string
Is there any way to get a string representing a function's exact
signature as declared in the source? I can generate it myself
using reflection but it might not be 100% verbatim so wanted to
know if there's anything built in?
foreach (m; __traits(allMembers, T)) {
alias member = __traits(getMember, T, m);
string signature = // Call some function to get "member"'s
signature as a string
}
Re: How to center dlangui Window on screen
On Thursday, 29 November 2018 at 13:42:28 UTC, greatsam4sure wrote: Which class in dlangui is use to obtain the screen height and width? A Windom of dimension 280 x 445 in dlangui is the same as a Windom of 350 x 550 in Javafx and adobe air. What could be responsible for this wide difference? A window of 350 x 550 in adobe air is the same as a window of 350 x 550 in javafx. So why is dlangui window bigger? Note that I am using w x h for my window dimension and I am on windows 10 That looks like DPI scaling is in effect: 280 pixels + 125% DPI = 350. There's an example of how to get the screen size here (look for getScreenDimensions): https://github.com/buggins/dlangui/blob/60159c61e27d86012fbf8f205c75d30196fc0e52/src/dlangui/platforms/windows/winapp.d
Re: Making external types available to mixins
On Friday, 23 November 2018 at 21:49:55 UTC, Kagamin wrote:
Well, just have all factories in one module and import it, then
they will be visible.
They're part of another library over which I have no control, but
yes, I could still import them all and make life easier.
import allfactories;
auto makeWith(string className, Args…)(auto ref Args args) {
mixin("return makeWith!(I", className, "Factory)(args);"); //
Fowarded to implementation of makeWith below
}
Or predeclare make functions in factory modules
interface ICalendarFactory
{
...
}
alias makeCalendar=makeWith!ICalendarFactory;
Re: memoize & __traits(compiles...)
On Friday, 23 November 2018 at 11:29:24 UTC, Nicholas Wilson wrote: No, std.functional.memoize uses a hashtable to cache the runtime results of calls to expensive functions. assuming that the example is not oversimplified and generateFunc1 and generateFunc2 are functions, the compiler doesn't do extra semantic analysis so the validity of the functions is effectively cached. If they are templates (with parameters) then the compiler will automatically memoize them (it too keeps a hashtable of template instances). Ah, that's good to know.
memoize & __traits(compiles...)
I'm doing a fair amount of repeatedly checking if a function
compiles with __traits(compiles...), executing the function if
so, erroring out if not, like this:
static if (__traits(compiles, generateFunc1())) {
return generateFunc1();
} static if (__traits(compiles, generateFunc2())) {
return generateFunc2();
} else static assert(false);
But it seems inefficient to have to evaluate those functions
twice, so I'd like to optimise this so if __traits(compiles...)
succeeds, the result is cached and then used when the function is
actually called. I wondered if using std.functional.memoize would
help?
Re: Making external types available to mixins
On Thursday, 22 November 2018 at 16:27:08 UTC, Eduard Staniloiu wrote: So I had a go at this and I have a working solution. https://run.dlang.io/is/oaH6Ib At first, I tried to do everything in the mixin, as you can see with the `failedAttempt` function. The idea was that this should have worked like `mixin(failedAttempt!"Calendar"(1, 2, 3));`. As you can see, and the name suggests, I wasn't able to make it work with `args`. The solution I have to your problem is to use a template, in this case the `theType` template that will expand to the fully qualified name. So you'd use it like `makeWith!(theType!"Calendar")(args);` Hope it helps! Edi Thanks!
Re: task can't take a class method
On Monday, 19 November 2018 at 16:29:01 UTC, helxi wrote: On Monday, 19 November 2018 at 16:10:15 UTC, helxi wrote: ... Oh wait never mind I was missing a bracket: auto proc = task!(ddCall.dd()); Now I have another thing to worry about: ddcall.dd() cannot be read at compile time. You're attempting to execute "dd" at compile time. You should be able to pass the function to a task in a couple of ways: 1) task() 2) task!(ddCall.dd)
Re: Making external types available to mixins
On Saturday, 17 November 2018 at 21:11:38 UTC, Adam D. Ruppe wrote: On Saturday, 17 November 2018 at 17:58:54 UTC, John Chapman wrote: Has anyone had a similar need and come up with a solution? You might be able to just pass it the Calendar type, and then fetch its parent module and get the ICalendarFactory from there (assuming they are defined in the same module). But generally speaking, passing strings to a mixin that refer to something in another module isn't going to work well thanks to scoping rules. You are better off passing a symbol of some sort. So there is no actual Calendar type. There's an ICalendarFactory type that creates instances of ICalendar (these types are part of a third-party API). "Calendar" is just a key users could use when calling a "makeWith" method that would build the ICalendar/Factory names, instantiate the factory, call the appropriate factory method and return the result. There are thousands of such object/factory pairs in the API. Just trying to cut out a lot of boilerplate code, but it doesn't seem doable this way.
Making external types available to mixins
The following code doesn't compile because the generated type
name needs to be available inside the mixin's scope, whereas it's
actually in another module.
auto makeWith(string className, Args…)(auto ref Args args) {
mixin("return makeWith!(I", className, "Factory)(args);"); //
Fowarded to implementation of makeWith below
}
auto makeWith(T, Args…)(auto ref Args args) … // This is the
implementation
The idea is that users could type (for example)
makeWith!`Calendar`(…) instead of the longer
makeWith!ICalendarFactory(…).
I tried mixing in an import statement with the help of
std.traits.moduleName so that the I...Factory type would be
available but again the compiler complains that it's undefined.
Has anyone had a similar need and come up with a solution?
Re: Profiling DMD's Compilation Time with dmdprof
On Thursday, 8 November 2018 at 20:19:47 UTC, Vladimir Panteleev wrote: On Thursday, 8 November 2018 at 19:07:32 UTC, Jacob Carlborg wrote: 21 seconds on a Windows 10 virtual machine compiling using the win32.mak file. Sounds like we're narrowing it down to the Visual Studio solution. Well, I'm just using win32.mak in a command prompt and it takes ~1m 40s to build DMD. It just seems to do nothing for most of that time.
Re: Accessing LPARAM param from SendMessage acts weird.
On Sunday, 4 November 2018 at 19:06:22 UTC, Mark Moorhen wrote:
Another Windows challenge:
I'm trying to get the title of the active window even if it is
from an external application. This is what I've come up with so
far:
import std.stdio;
import core.sys.windows.windows;
extern (Windows)
void main()
{
HWND foreground = GetForegroundWindow();
const(wchar) title;
int length = SendMessage(foreground, WM_GETTEXTLENGTH, 0, 0);
SendMessage(foreground, WM_GETTEXT, length,
LPARAM(title)); //LPARAM is a Long Pointer
writeln(length);
writeln(title);
}
Outputs :
27
´┐┐
So the lengt of the foreground windows title should be 27 chars
long, but the title is only 3 chars (and kinda funny ones too:-(
Anyone ideas?
You need to allocate some memory to receive the string from
WM_GETTEXT.
auto length = SendMessage(foreground, WM_GETTEXTLENGTH, 0, 0);
auto buffer = new wchar[length + 1]; // +1 for the trailing
null character
SendMessage(foreground, WM_GETTEXT, buffer.length,
cast(LPARAM)buffer.ptr);
auto title = cast(wstring)buffer[0 .. length];
writeln(title);
Re: Private struct constructor
On Thursday, 4 October 2018 at 07:31:21 UTC, Ritchie wrote: Any reason why this works? https://run.dlang.io/is/TALlyw "private" applies to the module, not the type. https://dlang.org/spec/attribute.html#visibility_attributes
Re: Use nested functions as callbacks with Windows API functions?
On Monday, 1 October 2018 at 20:27:43 UTC, spikespaz wrote:
Of course there is nothing wrong with defining each callback as
a separate function, but then comes the issue of naming them. I
also don't like the way it makes my code look.
I think the best you can do is something like this:
---
auto callback(T, string file = __FILE__, size_t line =
__LINE__)(T handler) {
import std.traits;
__gshared T handler_;
handler_ = handler;
extern(Windows)
ReturnType!T fn(Parameters!T args) {
synchronized return handler_(args);
}
return
}
void main() {
HWND[] list;
EnumWindows((HWND hwnd, LPARAM lparam) {
list ~= hwnd;
return TRUE;
}.callback(), 0);
writeln(list);
}
---
Re: Convert output range to input range
On Saturday, 17 March 2018 at 17:16:40 UTC, David Nadlinger wrote: On Friday, 16 March 2018 at 07:57:04 UTC, John Chapman wrote: I need to write to a range created with outputRangeObject, then read from it. Is there a way to convert it to an input range? Could you illustrate your problem a bit further? I'm trying to replace the old std.streams in my app with ranges. I'm interfacing with a networking library to which I supply a callback that when invoked provides the requested data. I write that data to an output range, but later on I need to read that data from the range too - which of course you can't do. So what I'm looking for is the range-based equivalent of a MemoryStream.
Convert output range to input range
I need to write to a range created with outputRangeObject, then read from it. Is there a way to convert it to an input range?
Re: How to proceed with learning to code Windows desktop applications?
On Wednesday, 31 January 2018 at 11:52:20 UTC, rumbu wrote: On Windows platform, WPF is the way to go right now. Once you accommodate yourself with XAML (descriptive language for designing windows and controls), you can step up from WPF to modern Windows apps (UWP). Unfortunately, none of these technologies are supported in D. Just to say that it is actually possible to write modern Windows apps in D - I've done it. WinRT is just COM. Granted it's not as easy as using Microsoft's language projections, but it's doable if you really want to.
Re: Get aliased type
On Tuesday, 2 January 2018 at 12:19:19 UTC, David Nadlinger wrote: There is indeed no way to do this; as you say, aliases are just names for a particular reference to a symbol. Perhaps you don't actually need the names in your use case, though? — David The idea was to distinguish between a BSTR (an alias for wchar* from core.sys.windows.wtypes used widely with COM) and wchar* itself, chiefly so that I could call the appropriate Windows SDK functions on them to convert them to and from D strings. Although BSTRs look like wchar*s to the end user they are not really interchangable - for example, calling SysFreeString on a regular wchar* will cause a crash. According to the docs, a BSTR is prefixed with its length and ends in a null character, but I'm not sure if checking for the existence of those is going to be good enough.
Get aliased type
Because an alias of a type is just another name for the same thing you can't test if they're different. I wondered if there was a way to get the aliased name, perhaps via traits? (.stringof returns the original type.) I can't use Typedef because I'm inspecting types from sources I don't control.
Re: std.file and non-English filename in Windows
On Sunday, 31 December 2017 at 18:21:29 UTC, Domain wrote: In Windows, exists, rename, copy will report file not exists when you input non-English filename, such as Chinese 中文.txt Works for me. I created a file with the name "中文.txt" and std.file.exists returned true. Is your D source file saved in ASCII by any chance? Try saving it with a different encoding, such as UTF8.
Re: Calling a d-style-variadic-function from another
On Saturday, 30 December 2017 at 10:14:35 UTC, tipdbmp wrote: // how can I adjust _argptr? _argptr = ??? Try this: _argptr = *cast(va_list*)_argptr;
Re: Embedded Containers
On Tuesday, 5 December 2017 at 19:01:48 UTC, A Guy With a
Question wrote:
The following doesn't appear to be valid syntax. Array!Item!T
I get the following error:
"multiple ! arguments are not allowed"
Which is ok...I get THAT error, however, this does not work
either:
alias Items(T) = Array!Item(T);
This gives me the error:
Error: function declaration without return type. (Note that
constructors are always named `this`)
Your wrapping the wrong part in parentheses.
Array!(Item!T)
It would actually be Array!(Item!(T)), but if a single type is
specified you're allowed to omit the parentheses when
instantiating.
Item is defined as follows:
interface Item(T)
{
@property
T member();
}
That part compiles fine. However, even when I remove the
aliasing, I can't import this interface. I get "Error:
undefined identifier 'Item'"
I'm not quite sure I understand how to create a generic
container interface or class in D. Half of how I expect it to
work works, but the other half doesn't. The docs aren't too
helpful. I'm not sure if it's a case where there's just too
much to go through or if what I'm trying to do isn't really
covered. Essentially I'm trying to create an array of this type
'Item' that has some generic members. I think people who come
from C# will kind of get what I'm trying to do here, because
I'm trying to port C# code.
What other problems are you having? I did the same and it was
fairly straightforward.
Re: Is variable void?
On Saturday, 25 November 2017 at 15:38:15 UTC, Adam D. Ruppe wrote: nope. It'd be indistinguishable from the user just happening to initialize it to some random value. Thanks. I'll got with .init instead.
Is variable void?
Is there any way of determining whether a variable has been initialized or not? For example, if something is declared like this: int x = void; can I check if it's void before I use it, say, in a function it's been passed to?
Re: Whats the correct way to pass a D array type to a win32 api function wanting a buffer?
On Thursday, 13 July 2017 at 01:15:46 UTC, FoxyBrown wrote: ENUM_SERVICE_STATUS_PROCESS[5000] services; auto res = SVC.EnumServicesStatusExA(schSCManager, SC_ENUM_TYPE.SC_ENUM_PROCESS_INFO, servicesType, SERVICE_STATE_ALL, cast(ubyte*)services.ptr, 5000*ENUM_SERVICE_STATUS_PROCESS.sizeof, , , , cast(const(char)*)null); You need to call EnumServicesStatusEx twice - the first time to get the required size of the buffer. See the docs for the lpServices parameter here https://msdn.microsoft.com/en-us/library/windows/desktop/ms682640(v=vs.85).aspx Then allocate a buffer using the returned dwBytesNeeded and call the function again with your buffer and its size.
Re: DMD VS2017 Support
On Sunday, 30 April 2017 at 16:05:10 UTC, Igor wrote: On Sunday, 30 April 2017 at 15:53:07 UTC, Mike Parker wrote: On Sunday, 30 April 2017 at 14:56:44 UTC, Igor wrote: I tried updating sc.ini to new paths but I still get this error. Can someone offer some advice? Which paths did you set? These are the ones I changed: VCINSTALLDIR=C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.10.25017\ UCRTVersion=10.0.15063.0 LINKCMD=%VCINSTALLDIR%\bin\HostX64\x64\link.exe PATH=%PATH%;%VCINSTALLDIR%\bin\HostX64\x64 LIB=%LIB%;"%VCINSTALLDIR%\lib\x64" Same for x86 environment, except, of course I replaced x64 with x86 in the values. I should also mention that compiling using DUB works. It only doesn't work from VS. Here are mine, if it helps: VCINSTALLDIR=C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC WindowsSdkDir=C:\Program Files (x86)\Windows Kits\10 UniversalCRTSdkDir=C:\Program Files (x86)\Windows Kits\10 UCRTVersion=10.0.15063.0 LINKCMD=%VCINSTALLDIR%\Tools\MSVC\14.10.25017\bin\HostX64\x64\link.exe PATH=%PATH%;%VCINSTALLDIR%\Tools\MSVC\14.10.25017\bin\HostX64\x64 LIB=%LIB%;"%VCINSTALLDIR%\Tools\MSVC\14.10.25017\lib\x64" LIB=%LIB%;"%UniversalCRTSdkDir%\Lib\%UCRTVersion%\um\x64" LIB=%LIB%;"%UniversalCRTSdkDir%\Lib\%UCRTVersion%\ucrt\x64"
Re: COM Expertise needed: COM Callbacks
On Thursday, 27 April 2017 at 20:20:23 UTC, Nierjerson wrote:
I think the main issue though, is that I really don't know what
is going on when I invoke the PS function. It seems to call the
server method that takes the interface and then the server does
it's "magic"(which is calling my QueryInterface) but how the
implemented QueryInterface is suppose to respond is beyond
me... I've tried some based stuff but nothing seem to work. The
good news is that it is doing something(calling QueryInterface)
which means that the server is at work.
Any more ideas? I think the issue currently is is the
QueryInterface(it is simply not doing what it is suppose to).
I'll probably have to look at some other implementations to see
what is going on.
QueryInterface is COM's version of opCast. It asks if you support
the interface represented by an IID (riid). If you don't, then
you return E_NOINTERFACE. If you do, then you point the result
(pvObject) to yourself and return S_OK. Here's a basic
implementation:
extern(Windows)
HRESULT QueryInterface(IID* riid, void** pvObject) {
if (pvObject is null) return E_POINTER;
*pvObject = null;
if (*riid == IID_IUnknown) *pvObject =
cast(void*)cast(IUnknown)this;
else if (*riid == IID_IDispatch) *pvObject =
cast(void*)cast(IDispatch)this;
// and so on for all interfaces we support
if (*pvObject is null) return E_NOINTERFACE;
(cast(IUnknown)this).AddRef();
return S_OK;
}
AddRef/Release perform the COM object's reference counting, so
you should implement them too.
However, I don't understand why your icRBCColor class both
implements and encapsulates IDispatch - the generated version
cRGBColor from Gen.d just encapsulates it. Why do you need to
instantiate an instance of icRGBColor? Can't you just use the
rgb1 object you got from the dd.RGB() getter, assign the colour
values to its Red, Blue, Green properties as needed, then call
the dd.RGB(rgb1) setter? Does that not work?
Re: COM Expertise needed: COM Callbacks
On Wednesday, 26 April 2017 at 23:04:53 UTC, Nierjerson wrote: On Wednesday, 26 April 2017 at 15:30:37 UTC, John Chapman wrote: On Tuesday, 25 April 2017 at 18:39:56 UTC, Nierjerson wrote: [...] When you use DISPATCH_PROPERTYPUT you need to set cNamedArgs and rgdispidNamedArgs like so: int dispidNamed = DISPID_PROPERTYPUT; params.cNamedArgs = 1; params.rgdispidNamedArgs = You should also call AddRef on any COM objects you add to your paramVars array. Did you try this? I tried and same issue. Are you sure the above is required? I'm not using any "named" args so not sure why it should matter? From the documentation (https://msdn.microsoft.com/en-us/library/windows/desktop/ms221479(v=vs.85).aspx): "When you use IDispatch::Invoke() with DISPATCH_PROPERTYPUT or DISPATCH_PROPERTYPUTREF, you have to specially initialize the cNamedArgs and rgdispidNamedArgs elements of your DISPPARAMS structure" Thought it might help.
Re: COM Expertise needed: COM Callbacks
On Tuesday, 25 April 2017 at 18:39:56 UTC, Nierjerson wrote:
void RGB(icRGBColor ic, cSolidColor s)
{
import main;
EXCEPINFO exception;
uint argErr = 0;
auto iidNULL = IID_NULL;
auto RT = new SafeVariantPtr();
VARIANT[1] paramVars;
DISPPARAMS params = {rgvarg: paramVars.ptr, cArgs: 1,
cNamedArgs: 0};
auto ID = s.COMMethodIDs[`RGB`];
paramVars[0].punkVal = ic; paramVars[0].vt =
VARENUM.VT_DISPATCH; scope(exit) VariantClear([0]);
auto res = s.iDispatch.Invoke(cast(int)ID, , 0,
DISPATCH_PROPERTYPUT, , cast(VARIANT*)RT, ,
);
assert(res == S_OK, `Could not invoke COM Function
cSolidColor.RGB. Error `~to!string(res, 16));
}
When you use DISPATCH_PROPERTYPUT you need to set cNamedArgs and
rgdispidNamedArgs like so:
int dispidNamed = DISPID_PROPERTYPUT;
params.cNamedArgs = 1;
params.rgdispidNamedArgs =
You should also call AddRef on any COM objects you add to your
paramVars array.
Re: opDispatch/template get this
On Monday, 3 April 2017 at 21:49:07 UTC, Inquie wrote:
I am using opDispatch to wrap function calls
Error: 'this' is only defined in non-static member functions,
not opDispatch!"foo"
class X
{
auto localfoo() { return 3; }
template opDispatch(string name, Args...)
{
static if (name == `foo`) { alias opDispatch = () {
return this.localfoo();
};
}
which doesn't work because of this
I tried
template opDispatch(string name, this _this, Args...)
{
static if (name == `foo`) { alias opDispatch = () { return
_this.localfoo(); };
}
but that doesn't work either ;/
I call it like
auto y = x.foo();
but foo isn't found
https://dpaste.dzfl.pl/bf31f535340f
class X
{
auto localfoo() { return 3; }
auto localfoo2(int x) { return x; }
template opDispatch(string name, Args...)
{
static if (name == `foo`)
{
alias opDispatch = () { return this.localfoo(); };
}
static if (name == `bar`)
{
alias opDispatch = () { return this.localfoo2(); }; // need
to be able to pass Args properly here
}
}
}
void main()
{
auto x = new X();
auto z = x.localfoo();
auto y = x.foo();
auto q = x.bar();
}
Make opDispatch a templated function and forward with
__traits(getMember, this, "foo") or a mixin.
class X {
auto localfoo() { return 3; }
auto localfoo2(int x) { return x; }
auto opDispatch(string name, Args...)(auto ref Args args) {
static if (name == "foo") return __traits(getMember, this,
"localfoo")(args);
else static if (name == "bar") mixin("return
localfoo2(args);");
}
}
Re: COM2D Wrapper
On Monday, 27 March 2017 at 21:02:05 UTC, Nierjerson wrote: Anyone can help get this working? I think the issue maybe that the interface pointer returned by the COM interface is "C-like" and doesn't match what D expects an interface to be. I get access violations when trying to call the functions on the returned interfaces. Not sure about this though. I don't have Photoshop so I can't verify this, however I think Photoshop only declares dispinterfaces, meaning those methods aren't present in the vtable, so every method will have to be called using IDispatch.Invoke. (I'm guessing IDL2D doesn't distinguish between dual and disp- interfaces and just emits any functions it sees.)
Re: Working Windows GUI library - no console Window
On Friday, 6 November 2015 at 15:52:10 UTC, johann wrote: hi, i like to use a window gui library and i think i found a working one. https://github.com/FrankLIKE/dfl2 - works with x64 the problem is, that with DMD 2.069.0, VS2015 and visualD the trick of using "-L/SUBSYSTEM:windows,6.00 -L/ENTRY:mainCRTStartup" does not suppress the console window anymore. does anybody have a solution for that problem? is anybody still working on that library? johann Same problem here. I had to remove the mainCRTStartup flag and use WinMain as my entry point.
Re: DMD on WIndows 10
On Friday, 31 July 2015 at 22:02:13 UTC, Paul D Anderson wrote: I'm waiting to upgrade from Windows 7 to Windows 10 to avoid the inevitable just-released bugs, but does anyone have any info about D on Windows 10? Has anyone tried it? I'm on Windows 10, and my DMD-built programs run just fine.
Re: how to iterate on Array?
On Saturday, 27 June 2015 at 17:43:13 UTC, aki wrote:
I want to print the contents of Array!int
import std.stdio;
import std.container;
void pr(Array!int a) {
foreach(i, v; a[]) {
writeln(%4s: %s\n, i, v);
}
}
But when I compile it by DMD 2.062 on Windows
it says:
testArray.d(5): Error: cannot infer argument types
(line 5 is at foreach(i, v; a[]) { )
What's wrong? how can I iterate the array?
Thanks, aki.
size_t i;
foreach (v; a[])
writeln(%s: %s, i++, v);
Re: New names - 2.068 roundup
On Wednesday, 24 June 2015 at 01:04:01 UTC, Adam D. Ruppe wrote: The code breakage is minimal Won't this break isSomeString? Phobos uses this everywhere.
Re: Naming things
On Monday, 22 June 2015 at 11:45:31 UTC, Wyatt wrote: None of the suggestions I've seen so far really call out to me hey, this is lazy and has a non-lazy counterpart. Would it be so wrong to add lazy to the beginning or end so it's super obvious at a glance with zero cognitive overhead? -Wyatt This would be my preferred option. When C# introduced asynchronous counterparts of existing methods, they appended Async to the names, which seems to have worked out well - eg, Wait/WaitAsync, Read/ReadAsync. So we'd have setExtension/setExtensionLazy etc.
Re: Can't call GetWindowTextW - Error:undefined identifier
On Wednesday, 17 June 2015 at 20:50:27 UTC, John Chapman wrote:
wchar[MAX_PATH] buffer;
int length = GetWindowTextW(GetForegroundWindow(),
buffer.ptr, buffer.length);
Don't know why I used MAX_PATH there. You should probably
dynamically allocate a buffer based on GetWindowTextLengthW.
extern(Windows)
int GetWindowTextLengthW(HWND hWnd);
Putting it all together:
import core.stdc.stdlib : malloc, free;
import std.utf;
HWND hwnd = GetForegroundWindow();
int length = GetWindowTextLengthW(hwnd);
if (length 0) {
auto buffer = cast(wchar*)malloc((length + 1) * wchar.sizeof);
scope(exit) free(buffer);
length = GetWindowTextW(hwnd, buffer, length);
if (length 0)
auto title = buffer[0 .. length].toUTF8();
}
Re: Can't call GetWindowTextW - Error:undefined identifier
On Wednesday, 17 June 2015 at 21:00:55 UTC, Dan wrote: thank you John it worked :) do I always need do the same for all windows API? For most Win32 API functions, yes. Although there are some more complete headers on Github (for example, https://github.com/rikkimax/WindowsAPI).
Re: Can't call GetWindowTextW - Error:undefined identifier
On Wednesday, 17 June 2015 at 20:40:02 UTC, Dan wrote: I'm new to Dlang and I have no Idea whats wrong with this code! wchar[260] buffer; HWND hWindow = GetForegroundWindow(); GetWindowTextW(hWindow, buffer, sizeof(title)); -- Problem here The compiler is complaining it can't find an identifier named GetWindowTextW, so you'll have to declare it yourself. Try this: extern(Windows) int GetWindowTextW(HWND hWnd, LPWSTR lpString, int nMaxCount); And call it like so: wchar[MAX_PATH] buffer; int length = GetWindowTextW(GetForegroundWindow(), buffer.ptr, buffer.length);
Re: Calling a cpp function from d
On Tuesday, 16 June 2015 at 12:42:16 UTC, C2D wrote: On Tuesday, 16 June 2015 at 12:31:23 UTC, John Chapman wrote: On Tuesday, 16 June 2015 at 12:26:45 UTC, C2D wrote: BOOL result = SHGetFolderPath(null, 0x23, null, 0, cache.ptr); That should be: BOOL result = SHGetFolderPath(null, 0x23, null, 0, buf.ptr); Thanks, but I'm still getting the same error - Use SHGetFolderPathW.
Re: Calling a cpp function from d
On Tuesday, 16 June 2015 at 12:42:16 UTC, C2D wrote:
On Tuesday, 16 June 2015 at 12:31:23 UTC, John Chapman wrote:
On Tuesday, 16 June 2015 at 12:26:45 UTC, C2D wrote:
BOOL result = SHGetFolderPath(null, 0x23, null, 0, cache.ptr);
That should be:
BOOL result = SHGetFolderPath(null, 0x23, null, 0, buf.ptr);
Thanks, but I'm still getting the same error -
Here's a working version:
import core.sys.windows.windows;
extern(Windows)
HRESULT SHGetFolderPathW(HWND hwndOwner, int nFolder, HANDLE
hToken, DWORD dwFlags, LPWSTR pszPath);
string getFolderPath(int folder) {
import core.stdc.wchar_ : wcslen;
import std.utf : toUTF8;
wchar[MAX_PATH] buffer;
if (SHGetFolderPathW(null, folder, null, 0, buffer.ptr) = 0)
return buffer[0 .. wcslen(buffer.ptr)].toUTF8();
return null;
}
void main() {
writeln(getFolderPath(0x23));
}
Re: Calling a cpp function from d
On Tuesday, 16 June 2015 at 12:26:45 UTC, C2D wrote: BOOL result = SHGetFolderPath(null, 0x23, null, 0, cache.ptr); That should be: BOOL result = SHGetFolderPath(null, 0x23, null, 0, buf.ptr);
Re: DIP80: phobos additions
On Wednesday, 10 June 2015 at 09:30:37 UTC, Robert burner Schadek wrote: On Wednesday, 10 June 2015 at 09:12:17 UTC, John Chapman wrote: Logging std.experimental.logger!? Perfect, he said sheepishly.
Re: DIP80: phobos additions
It's a shame ucent/cent never got implemented. But couldn't they be added to Phobos? I often need a 128-bit type with better precision than float and double.
Re: DIP80: phobos additions
On Wednesday, 10 June 2015 at 07:56:46 UTC, John Chapman wrote: It's a shame ucent/cent never got implemented. But couldn't they be added to Phobos? I often need a 128-bit type with better precision than float and double. Other things I often have a need for: Weak references Queues, stacks, sets Logging Custom date/time formatting Locale-aware number/currency formatting HMAC (for OAuth) URI parsing Sending email (SMTP) Continuations for std.parallelism.Task Database connectivity (sounds like this is on the cards) HTTP listener
Re: core.thread.[Ss]leep - Is this a bug?
On Wednesday, 13 May 2015 at 20:09:44 UTC, wobbles wrote: On windows, core.thread.Sleep (big 'S') On linux core.thread.sleep (little 'S') I'm trying to import as little symbols as possible, so was importing specific items like import core.thread : Sleep; but it fails when I compile on linux, so I need to do a version(Windows) import core.thread : Sleep; version(Posix) import core.thread : sleep; Seems like a bug? No, you should be calling Thread.sleep (capital T) instead.
Re: windows wininet library
On Sunday, 1 February 2015 at 08:37:23 UTC, ketmar wrote: seems that my idea of using D to write a simple windows utility was very wrong. ok, another attempt to use D for our windows developement has failed. i'm in no way can sell manual .def creation to our team -- they will make fun of me, showing how their Visual C can compile this code without any troubles and external utilities... It's easier to run coffimplib on the lib files from the Windows SDK.
DMD compiler platform documentation AWOL
Looks like the documentation for DMD's command line switches and platform-specific information has disappeared from the site. It used to live under Downloads Tools in menus labelled Linux notes, Windows notes etc.
Re: sign oauth request
there is no HMAC-SHA1 algorithm in phobos library... should I implement it from scratch? http://dlang.org/phobos/std_digest_sha.html#SHA1
Re: John Chapman (Juno), calling for John Chapman (not spam)
On Thursday, 12 June 2014 at 05:39:06 UTC, Karen Bantoft wrote: I'm looking for the John Chapman who worked as a programmer at Centre-file Ltd, in Finsbury Circus London in 1971. Any leads? Karen Not me, sorry.
Thread name conflict
Importing both core.thread and std.regex results in a conflict as both define a Thread type. Perhaps the regex module's author assumed there'd be no clash since it's a template - Thread(DataIndex). Should I file a bug suggesting a name change? Or maybe D ought to allow both parameterised and normal types to have the same name - C# for example allows it.
