On Saturday 26 of November 2011 07:45:36 Felipe Monteiro de Carvalho wrote:
> On Fri, Nov 25, 2011 at 2:33 PM, Hans-Peter Diettrich
>
> wrote:
> >>> This doesn't answer my question. What's the *source* of the processed
> >>> messages?
> >
> > And how does PostMessage fit into the picture?
>
> I
On Friday 25 of November 2011 20:15:26 Everton Vieira wrote:
> Hi people, anyone uses the combination of Postgres with Lazarus?
>
> I've been gotting a lot of problems with it:
>
> To create or drop database.
> To create or drop schema.
> To create or drop table.
> To create or drop index.
>
> O
On Fri, Nov 25, 2011 at 2:33 PM, Hans-Peter Diettrich
wrote:
>>> This doesn't answer my question. What's the *source* of the processed
>>> messages?
> And how does PostMessage fit into the picture?
If this is for writing documentation, then you are clearly on the
wrong track here. Libraries work
You have to read the implementations to see what the routines do, and
in this case it looks pretty clear that it is a legacy introduced
because LCL-gtk1 needed it.
It probably can be deprecated.
function TGTKWidgetSet.FontCanUTF8(Font: HFont): boolean;
begin
Result:=IsValidGDIObject(Font)
{
W dniu 2011-11-06 19:08, cobines pisze:
However, weird thing. If I choose Build from menu then it doesn't seem
to rebuild FCL, LCL, but if I start Build from a hotkey then it does.
The call from menu item is:
procedure TMainIDE.mnuBuildProjectClicked(Sender: TObject);
Begin
DoBuildProject(cr
On Fri, 25 Nov 2011 22:57:34 +0100
Hans-Peter Diettrich wrote:
> zeljko schrieb:
> > On Friday 25 of November 2011 14:33:16 Hans-Peter Diettrich wrote:
> >
> >
> > > And how does PostMessage fit into the picture?
> >
> >
> > I'm using PostMessage in an audio application to update position of
zeljko schrieb:
On Friday 25 of November 2011 14:33:16 Hans-Peter Diettrich wrote:
> And how does PostMessage fit into the picture?
I'm using PostMessage in an audio application to update position of
trackbar on mainform from another thread where audio file is loaded and
playing and it wor
How is a *font* involved in UTF-8 encoding?
IMO IsUnicodeFont would be a better name.
DoDi
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Hans-Peter Diettrich schrieb:
TWin32WidgetSet.SetScrollInfo modifies the content of the ScrollInfo
ScrollInfo.nMax := Max(ScrollInfo.nMin, ScrollInfo.nMax - 1);
i.e. nMax is typically decremented by 1, with *every* new call!
It looks like this is only a wrong implementation of the constrain
Hi people, anyone uses the combination of Postgres with Lazarus?
I've been gotting a lot of problems with it:
To create or drop database.
To create or drop schema.
To create or drop table.
To create or drop index.
Occurs erros. Specialy on Linux they happen. They aren't able to do this
functions
2011/11/25 Martin :
> On 25/11/2011 14:48, silvioprog wrote:
>>
>> Hi,
>>
>> Please see in: http://bugs.freepascal.org/view.php?id=20750
>>
>> Thx.
>>
> See comment on the issue, Selection is correct.
>
> Though SelStart moves the caret to the start position. It may be better to
> have it at SelEnd
Thanks, now became more clear
William de Oliveira Ferreira
Bacharel em Sistemas de Informação
2011/11/25 Sven Barth
> Am 25.11.2011 15:21, schrieb William Oliveira Ferreira:
>
> Thanks for the awnser, Sven, but, my question is why not only use
>> {$ifdef unix}
On 25/11/2011 14:48, silvioprog wrote:
Hi,
Please see in: http://bugs.freepascal.org/view.php?id=20750
Thx.
See comment on the issue, Selection is correct.
Though SelStart moves the caret to the start position. It may be better
to have it at SelEnd.
But the user code cam adjust the positio
On 25/11/11 14:21, William Oliveira Ferreira wrote:
Thanks for the awnser, Sven, but, my question is why not only use
{$ifdef unix}
cthreads
{$endif}
and i didn´t understand yet...
Because using cthreads causes the program to be linked against libc,
which people may not automatically want.
H
On Fri, 25 Nov 2011 12:21:24 -0200
William Oliveira Ferreira wrote:
> Thanks for the awnser, Sven, but, my question is why not only use
> {$ifdef unix}
> cthreads
> {$endif}
> and i didn´t understand yet...
If you want to use threads in your program, then the above is the
correct way.
The cthre
Am 25.11.2011 15:21, schrieb William Oliveira Ferreira:
Thanks for the awnser, Sven, but, my question is why not only use
{$ifdef unix}
cthreads
{$endif}
and i didn´t understand yet...
Using unit "cthreads" also means linking to the C library. As not every
applications needs threading (and thu
Thanks for the awnser, Sven, but, my question is why not only use
{$ifdef unix}
cthreads
{$endif}
and i didn´t understand yet...
William de Oliveira Ferreira
Bacharel em Sistemas de Informação
2011/11/25 Sven Barth
> Am 25.11.2011 11:17, schrieb William Olivei
Hi,
Please see in: http://bugs.freepascal.org/view.php?id=20750
Thx.
--
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Thank you all hor the help,
The problem was in the path variable of windows that in the first
instance pointed to an another make
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On Friday 25 of November 2011 14:33:16 Hans-Peter Diettrich wrote:
> And how does PostMessage fit into the picture?
I'm using PostMessage in an audio application to update position of trackbar
on mainform from another thread where audio file is loaded and playing and it
works ok (tested qt and
Michael Schnell schrieb:
On 11/25/2011 10:35 AM, Hans-Peter Diettrich wrote:
Does a SendMessage call bypass any other messages which have been
queued until that time? (by dispatching the message immediately to the
target?)
AFAIK, Yes. (i.e. in non-Windows LCLWidgetType implementations that
p
Felipe Monteiro de Carvalho schrieb:
On Fri, Nov 25, 2011 at 10:35 AM, Hans-Peter Diettrich
wrote:
This doesn't answer my question. What's the *source* of the processed
messages?
The usual flow of events for mouse / touch / keyboard events is:
Hardware -> Operating System -> Windowing Librar
On 11/25/11, Santiago A. wrote:
> El 25/11/2011 10:16, Kjow escribió:
>
> What about the standard pascal function "val"
>
Doesn't Val() use a hardcoded period (.) as decimalseparator?
The StrToFloat() family uses (Default)FormatSettings AFAIK.
Bart
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__
Am 25.11.2011 11:17, schrieb William Oliveira Ferreira:
Why should set $define usecthreads? only $ifdef linux doesn´t solve the
issue?
The default projects of Lazarus contain the following code:
uses
{$ifdef unix}{$ifdef usecthreads}
cthreads,
{$endif}{$endif}
...
The "cthreads" unit
Try this before to update with SNV
delete all the file in the lazarus directory except the "fpc" and
debugger directories and the lazarus executable (keep startlazarus.exe
lazarus.exe and lazbuilld.exe), update with SNV and try rebuild the
ide itself, so you gave a fresh Lazarus without interferenc
var
S: string;
F: Double;
R: Boolean;
begin
S := 'A';
R := TryStrToFloat(S, F);
end;
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Hi,
Could please someone return the file i386-win32-ppc386.zip (or new
version to compile FPC 2.5.1) to the FTP
ftp://ftp.freepascal.org/pub/fpc/dist/2.4.4/bootstrap/ ?
That file is used to this tutorial:
http://wiki.freepascal.org/Installing_Lazarus#Compiling.2Finstalling_FPC_and_Lazarus_from_Sou
El 25/11/2011 10:16, Kjow escribió:
What about the standard pascal function "val"
function IsStrFloatNum(s: string): Boolean;
var
dummyNumber:double;
posError:integer;
begin
val(s, dummyNumber, posError);
result:=(posError=0);
end;
Time ago I came across a program written by someone that ha
2011/11/25 Guadagnini David :
> Dear,
>
> i can't compile lazarus ide or any projects.
>
> Preliminary operation
>
> 1) Download and istall Lazarus 0.9.3 (lazarus-0.9.30.2-fpc-2.4.4-win32.exe)
> 2) with TortoiseSVN i have updated the files
>
> Now the problems:
>
> 1) If I start Lazarus receive thi
Why should set $define usecthreads? only $ifdef linux doesn´t solve the
issue?
William de Oliveira Ferreira
Bacharel em Sistemas de Informação
2011/11/24 silvioprog
> 2011/11/24 Everton Vieira :
> > I'll use it tomorow, just this and will work?
> >
> > Thanks
>
2011/11/25 Michael Van Canneyt :
>
> You should use the default TryStrToFloat() function from the sysutils unit.
> It does exactly that, without exceptions.
>
> The function result may change if the internationalization/localization
> settings have changed. e.g. if you switch from platform.
>
> Sec
On 11/25/2011 11:09 AM, Felipe Monteiro de Carvalho wrote:
The usual flow of events for mouse / touch / keyboard events is:
Hardware -> Operating System -> Windowing Library -> LCL Widgetset
Interface-> LCL
Yep. But regarding the issue discussed, the questions is "when".
AFAIK, the Widge
On 11/25/2011 10:35 AM, Hans-Peter Diettrich wrote:
Does a SendMessage call bypass any other messages which have been
queued until that time? (by dispatching the message immediately to the
target?)
AFAIK, Yes. (i.e. in non-Windows LCLWidgetType implementations that
provide their own queues, S
On Fri, Nov 25, 2011 at 10:35 AM, Hans-Peter Diettrich
wrote:
> This doesn't answer my question. What's the *source* of the processed
> messages?
The usual flow of events for mouse / touch / keyboard events is:
Hardware -> Operating System -> Windowing Library -> LCL Widgetset
Interface-> LCL
E
On 11/25/2011 10:35 AM, Hans-Peter Diettrich wrote:
So what happens on PostMessage, in detail when multiple threads post
messages at the same time?
With PostMessage, the events are queued one after the other and (some
days later) handled in the main thread in this sequence,
TWidgetSet.SendMess
Felipe Monteiro de Carvalho schrieb:
On Thu, Nov 24, 2011 at 6:18 PM, Hans-Peter Diettrich
wrote:
Q: does the LCL support more than one message queue (the one in
Application)?
There are various event loops:
* Application.Run
* ShowModal makes a loop too
* ProcessMessages has a short lived lo
Dear,
i can't compile lazarus ide or any projects.
Preliminary operation
1) Download and istall Lazarus 0.9.3 (lazarus-0.9.30.2-fpc-2.4.4-win32.exe)
2) with TortoiseSVN i have updated the files
Now the problems:
1) If I start Lazarus receive this errors:
Package: "FCL 1.0.1"
Unit: "XMLCfg"
U
You should use the default TryStrToFloat() function from the sysutils unit.
It does exactly that, without exceptions.
The function result may change if the internationalization/localization
settings have changed. e.g. if you switch from platform.
Secondly, please note that in the debugger y
Am 25.11.2011 10:16, schrieb Kjow:
Debugger Exception Notification
project.exe raised exception class 'EConvertError' with message:
"Cross" is an invalid float
This happens only if you run it in Lazarus. In this notification window
should be a checkbox for ignoring this exception type while de
On Fri, Nov 25, 2011 at 10:14 AM, Michael Schnell wrote:
> The question is what is meant by "send" here. AFAIK, (other than Windows
> that does a "Messages" mechanism) here, we have callbacks. And Callbacks
> result from the main thread of the application calling a function.
"here" means what? If
Hi all,
I need to know if a string is a valid floating-point number, so I
tried this function:
function IsStrFloatNum(s: string): Boolean;
begin
try
// try to convert the string into a floatnumber
StrToFloat(s);
// if there is no error the result is true
Result := True;
except
On 11/25/2011 09:45 AM, Felipe Monteiro de Carvalho wrote:
X11 does not send direct events. Direct events are sent by Cocoa and
also by Android. I don't know if you can stick non-X11 events into
that queue, but this hability by itself is not what defines something
as a queue or not.
The ques
TWin32WidgetSet.SetScrollInfo modifies the content of the ScrollInfo
ScrollInfo.nMax := Max(ScrollInfo.nMin, ScrollInfo.nMax - 1);
i.e. nMax is typically decremented by 1, with *every* new call!
IMO this is *not* a desireable behaviour.
Iff there exists a difference between the LCL and Win32
Indeed, there is an error in my last message. There is at least 1
queue in the LCL:
TApplication.FAsyncCall: TAsyncCallQueues;
And it is pooled by the main application loop.
I took a quick look and I didn't find any other queues in TApplication.
> But IMHO (other than Windows) X11 and friends d
On 11/24/2011 08:56 PM, Felipe Monteiro de Carvalho wrote:
And user code can also start their own loops by using ProcessMessages
I wouldn't call those loops "event queues", because they don't
implement any kind of queues, they process all events which are
obtained immediately. The events are no
On 11/24/2011 06:18 PM, Hans-Peter Diettrich wrote:
Q: does the LCL support more than one message queue (the one in
Application)?
AFAIK, the implementation in most non-Windows LCLWidgetTypes is that
multiple queues are created but the target of all of them is the main
thread that provides a "
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