If a buffer expect the first "element", and count is the number of elements
to write, then what is the unit size of that element? is it always "byte"?
2013/3/3 leledumbo
> > My question is, why the above code with string works sometime, but not
> alwasy fail?
>
> TStream.Write expects a buffer,
> My question is, why the above code with string works sometime, but not
alwasy fail?
TStream.Write expects a buffer, typically the first element of an item (NOT
a pointer to it) and the length (number of elements after first one).
> fs.Write(s, Length(s));
Here you try to give the WHOLE string,
On 3/2/2013 13:20, Mark Morgan Lloyd wrote:
Note that if you download the helpfiles manually, you might have to be careful
of exactly where you put them: it's easy to have a situation you've unpacked
them in a slightly different directory from where lhelp expects.
agreed... and if following the
Hi,
I encountered unpredictable behavior with the following code:
var
fs: TFileStream;
s: string;
begin
... ...
fs.Write(s, Length(s));
... ...
end;
But if I do this, then problem is gone:
var
fs: TFileStream;
s: string;
buf: PChar;
begin
... ...
buf := GetMem(Length(s) + 1)
> I would think that that depends on where you get the value for
> ForceDirectories(UTF8) from.
> If this vale is obtained from any widget (OpenDialog, TEdit, etc.) the
> encoding of the value is in UTF-8.
> If however you get the value as a commandline parameter, then it is in
> system-encoding if
Hi Mattias,
sorry that I did not answer your Post before today, somehow I did not
see it.
But as I saw in svn you managed to find it out by yourself, thank you
for adding retina support to trunk!
Great! Is there any documentation available?
Thank you, Johannes
Michael
Am 27.02.13 10:59,
On 3/2/13, Xiangrong Fang wrote:
> In order to write cross platform programs, shall I use ForceDirectories or
> ForceDirectoriesUTF8? I would like to:
I would think that that depends on where you get the value for
ForceDirectories(UTF8) from.
If this vale is obtained from any widget (OpenDialog
On Sat, Mar 2, 2013 at 11:36 AM, Hans-Peter Diettrich
wrote:
> Reinier Olislagers schrieb:
>
>
>>> What is *not* clear, to the OP and many other users, that the required
>>> functionality is *not* found directly in TMemo, but resides in a
>>> property (.Lines) of it. In such cases code completion
--- El vie 1-mar-13, Reinier Olislagers escribió:
>
> lazreportpdfexport
> Enables PDF export for lazreport (requires LazReport and
> PowerPDF)
>
> lr_add_function
> ?
> Additional functions for lazreport (requires LazReport)
>
> lr_codereport_pkg
> ?
>
> lr_dialogdesign
> ?
>
> lr_sqldb
>
On Sat, Mar 2, 2013 at 7:51 AM, Michael Van Canneyt
wrote:
>
>
> On Sat, 2 Mar 2013, Howard Page-Clark wrote:
>
>> On 02/03/13 5:45, Flávio Etrusco wrote:
>>>
>>> On Fri, Mar 1, 2013 at 11:49 PM, Xiangrong Fang wrote:
(...)
>
> Also, setting Self to nil is nonsense.
>
> If you do FreeAndNil(
appjaws wrote:
On 02/03/13 17:21, Reinier Olislagers wrote:
On 2-3-2013 17:41, appjaws wrote:
Any ideas on the built in help, I'm using linux with lazarus 1.0.6 and
fpc 2.6.0
Finally, built in help is a nice aid: with your cursor on TMemo, press
F1 and you'll see properties and methods that a
Some time a guy from the Lazarus team commented with me that I can use
microsoft .NET DLLs from a Lazarus program. The idea I have is access SQLite
databases recorded in a windows mobile handheld from a Lazarus program running
in a PC computer. I know this is possible when try from a C# program.
I was waiting some code examples. I have no expertise in these tecnologies you
mentioned. SetCommDCB? DirectX?
I have devices with camera and RFID readers builtin, and they aren't exactly
the most recent models. From which SDK are you talking about? Every device with
camera and/or RFID reader g
On 3/2/2013 12:48, waldo kitty wrote:
On 3/2/2013 12:43, patspiper wrote:
On 02/03/13 19:34, waldo kitty wrote:
what am i missing??
Probably
http://wiki.freepascal.org/Multiplatform_Programming_Guide#Gtk2_and_masking_FPU_exceptions
the main thing i see there is that the sample uses the math
On 3/2/2013 12:43, patspiper wrote:
On 02/03/13 19:34, waldo kitty wrote:
what am i missing??
Probably
http://wiki.freepascal.org/Multiplatform_Programming_Guide#Gtk2_and_masking_FPU_exceptions
the main thing i see there is that the sample uses the math unit... if this is
what is necessary,
On 02/03/13 19:34, waldo kitty wrote:
On 3/2/2013 08:25, Xiangrong Fang wrote:
I guess there is really a bug, see the following:
==
f := 123;
try
f := ln(0);
except
end;
//WriteLn(f);
//{
if f = 123 then
WriteLn('f=123, not modified')
On 3/2/2013 08:25, Xiangrong Fang wrote:
I guess there is really a bug, see the following:
==
f := 123;
try
f := ln(0);
except
end;
//WriteLn(f);
//{
if f = 123 then
WriteLn('f=123, not modified')
else
WriteLn('f is modified to:',
On 02/03/13 17:21, Reinier Olislagers wrote:
On 2-3-2013 17:41, appjaws wrote:
Any ideas on the built in help, I'm using linux with lazarus 1.0.6 and
fpc 2.6.0
Finally, built in help is a nice aid: with your cursor on TMemo, press
F1 and you'll see properties and methods that are available.
On 2-3-2013 17:41, appjaws wrote:
> Any ideas on the built in help, I'm using linux with lazarus 1.0.6 and
> fpc 2.6.0
>
>>> Finally, built in help is a nice aid: with your cursor on TMemo, press
>>> F1 and you'll see properties and methods that are available.
>
> I don't think my built in help
On 2-3-2013 17:51, waldo kitty wrote:
> On 3/2/2013 00:20, Reinier Olislagers wrote:
>> Guys,
>>
>> Anybody else interested in getting F1 to show the offline help if
>> context-sensitive help is not appropriate?
>
> i followed a wiki page that the help points to... the only thing i'm not
> sure of
Hi Paul,
I'm going to respond to the list as well so they know what's going on.
On 2-3-2013 17:35, Paul wrote:
> Thank you Reinier for your offer to look at my code.I am new to Lazarus
> and am working through some delphi books to try and learn, but this has
> got me stumped.
> I tried a new for
On 3/2/2013 07:54, Hans-Peter Diettrich wrote:
What is *not* clear, to the OP and many other users, that the required
functionality is *not* found directly in TMemo, but resides in a property
(.Lines) of it. In such cases code completion is of little help :-(
this is what i was going to write b
On 02/03/2013 13:49, appjaws wrote:
On 02/03/13 12:16, Reinier Olislagers wrote:
On 2-3-2013 13:05, appjaws wrote:
Hi,
How do you write the contents of a Memo to a file and read back into a
Memo?
Memo1.Lines.SaveToFile
Memo1.Lines.LoadFromFile
I tried the following line but I just get an err
On 3/2/2013 00:20, Reinier Olislagers wrote:
Guys,
Anybody else interested in getting F1 to show the offline help if
context-sensitive help is not appropriate?
i followed a wiki page that the help points to... the only thing i'm not sure of
is why it doesn't get built automatically when i upd
> as all my programs use string type, change them all to AnsiString is
scaring and I don't know the consequence at all
Do you access the string's internal structure? Do you write the string to
file directly instead of taking its content? If not, then nothing you have
to worry about. Standard strin
> I don't think my built in help is working, F1 does nothing.
How do I enable built in help?
http://wiki.freepascal.org/Installing_Help_in_the_IDE
--
View this message in context:
http://free-pascal-lazarus.989080.n3.nabble.com/Lazarus-Ok-I-give-up-tp4029554p4029579.html
Sent from the Free
Any ideas on the built in help, I'm using linux with lazarus 1.0.6 and
fpc 2.6.0
Finally, built in help is a nice aid: with your cursor on TMemo, press
F1 and you'll see properties and methods that are available.
I don't think my built in help is working, F1 does nothing.
How do I enable bu
On Sat, Mar 2, 2013 at 4:38 PM, Hans-Peter Diettrich
wrote:
>> Code completion finds the Lines property without problems.
>
> How is this helpful in finding the property, which finally implements Clear
> or some other task?
First you find Lines, then you find Clear. It is very helpful. :)
Your i
On 02.03.2013 15:57, Leonardo M. Ramé wrote:
On 2013-03-02 13:49:48 +, appjaws wrote:
On 02/03/13 12:16, Reinier Olislagers wrote:
On 2-3-2013 13:05, appjaws wrote:
Hi,
How do you write the contents of a Memo to a file and read back into a
Memo?
MemoCallNote.Lines.SaveToFile ('/home/paul
Juha Manninen schrieb:
On Sat, Mar 2, 2013 at 2:54 PM, Hans-Peter Diettrich
wrote:
What is *not* clear, to the OP and many other users, that the required
functionality is *not* found directly in TMemo, but resides in a property
(.Lines) of it. In such cases code completion is of little help :-(
Reinier Olislagers schrieb:
What is *not* clear, to the OP and many other users, that the required
functionality is *not* found directly in TMemo, but resides in a
property (.Lines) of it. In such cases code completion is of little help
:-(
True, but what other suggestion do you have apart fro
On 2013-03-02 13:49:48 +, appjaws wrote:
> On 02/03/13 12:16, Reinier Olislagers wrote:
> >On 2-3-2013 13:05, appjaws wrote:
> >>Hi,
> >>How do you write the contents of a Memo to a file and read back into a
> >>Memo?
>
> MemoCallNote.Lines.SaveToFile ('/home/paul/tmpinfo/MyTempFile.txt');
>
My program is always in {$mode objfpc} So string is not a problem, but
shall I use the UTF8 version or not? I remember that Windows is NOT UTF8?
2013/3/2 Sven Barth
> On 02.03.2013 15:12, Xiangrong Fang wrote:
>
>> * Avoid using AnsiString or the like (as all my programs use string
>>
>>
On 02.03.2013 15:12, Xiangrong Fang wrote:
* Avoid using AnsiString or the like (as all my programs use string
type, change them all to AnsiString is scaring and I don't know the
consequence at all).
Are your programs compiled in either {$mode Delphi} or {$mode
ObjFPC}{$H+}? If so th
Hi,
In order to write cross platform programs, shall I use ForceDirectories or
ForceDirectoriesUTF8? I would like to:
- Use native charset on the platform (i.e. UTF8 on Linux and whatever
codepage on Windows)
- Avoid using AnsiString or the like (as all my programs use string
type, c
On 2-3-2013 14:49, appjaws wrote:
> On 02/03/13 12:16, Reinier Olislagers wrote:
>> On 2-3-2013 13:05, appjaws wrote:
>>> Hi,
>>> How do you write the contents of a Memo to a file and read back into a
>>> Memo?
>> Memo1.Lines.SaveToFile
>> Memo1.Lines.LoadFromFile
>
> I tried the following line bu
On 02/03/13 12:16, Reinier Olislagers wrote:
On 2-3-2013 13:05, appjaws wrote:
Hi,
How do you write the contents of a Memo to a file and read back into a
Memo?
Memo1.Lines.SaveToFile
Memo1.Lines.LoadFromFile
I tried the following line but I just get an error message :-
Call.pas(87,17) Error:
On Sat, Mar 2, 2013 at 2:54 PM, Hans-Peter Diettrich
wrote:
> What is *not* clear, to the OP and many other users, that the required
> functionality is *not* found directly in TMemo, but resides in a property
> (.Lines) of it. In such cases code completion is of little help :-(
Code completion fi
On Sat, 2 Mar 2013, Sven Barth wrote:
On 02.03.2013 14:04, Xiangrong Fang wrote:
Hi,
Could anyone explain this:
Number := 123;
try
Number := Ln(0);
except
end;
WriteLn(Number);
The output is *Nan*, not 123. i.e. when exception occurs the variable is
modified anyway! So in the example b
On 02.03.2013 14:04, Xiangrong Fang wrote:
Hi,
Could anyone explain this:
Number := 123;
try
Number := Ln(0);
except
end;
WriteLn(Number);
The output is *Nan*, not 123. i.e. when exception occurs the variable is
modified anyway! So in the example below assigning MyInstance to nil
before Cr
I guess there is really a bug, see the following:
==
f := 123;
try
f := ln(0);
except
end;
//WriteLn(f);
//{
if f = 123 then
WriteLn('f=123, not modified')
else
WriteLn('f is modified to:', f);
//}
===
If I just
On Sat, 2 Mar 2013, Xiangrong Fang wrote:
Hi,
Could anyone explain this:
Number := 123;
try
Number := Ln(0);
except
end;
WriteLn(Number);
The output is Nan, not 123. i.e. when exception occurs the variable is modified
anyway! So in the example below assigning MyInstance
to nil before Cr
On Sat, 2 Mar 2013, Hans-Peter Diettrich wrote:
Juha Manninen schrieb:
On Sat, Mar 2, 2013 at 2:05 PM, appjaws wrote:
Another thing how can I find out legal qualifiers i.e. Memo.Clear ,
Memo.Text (both illegal). What is legal?
See Memo.Lines.
It has Clear and Text and everything that TStr
Hi,
Could anyone explain this:
Number := 123;
try
Number := Ln(0);
except
end;
WriteLn(Number);
The output is *Nan*, not 123. i.e. when exception occurs the variable is
modified anyway! So in the example below assigning MyInstance to nil
before Create does not help to ensure it is nil if an e
On 2-3-2013 13:54, Hans-Peter Diettrich wrote:
> Juha Manninen schrieb:
>> On Sat, Mar 2, 2013 at 2:05 PM, appjaws wrote:
>>> Another thing how can I find out legal qualifiers i.e. Memo.Clear ,
>>> Memo.Text (both illegal). What is legal?
>>
>> See Memo.Lines.
>> It has Clear and Text and everythi
Juha Manninen schrieb:
On Sat, Mar 2, 2013 at 2:05 PM, appjaws wrote:
Another thing how can I find out legal qualifiers i.e. Memo.Clear ,
Memo.Text (both illegal). What is legal?
See Memo.Lines.
It has Clear and Text and everything that TStrings supports.
How to find it? With a new component
Sven Barth schrieb:
If you want to ensure that MyInstance is Nil you need to do it like this:
=== code begin ===
try
MyInstance := TMyClass.Create('AnNonExistentFile');
except
MyInstance := Nil;
end;
=== code end ===
When an exception occurs in Create, the assignment will never take
pl
On Sat, Mar 2, 2013 at 2:05 PM, appjaws wrote:
> Another thing how can I find out legal qualifiers i.e. Memo.Clear ,
> Memo.Text (both illegal). What is legal?
See Memo.Lines.
It has Clear and Text and everything that TStrings supports.
How to find it? With a new component I usually look at its
On Sat, 2 Mar 2013, appjaws wrote:
Hi,
How do you write the contents of a Memo to a file and read back into a Memo?
I have tried all sorts, I am using Lazarus 1.0.6 on linux.
Simple:
Memo1.Lines.SaveToFile('/home/yourname/yourfile.txt');
And
Memo1.Lines.LoadFromFile('/home/yourname/yourfi
On 2-3-2013 13:05, appjaws wrote:
> Hi,
> How do you write the contents of a Memo to a file and read back into a
> Memo?
Memo1.Lines.SaveToFile
Memo1.Lines.LoadFromFile
> Another thing how can I find out legal qualifiers i.e. Memo.Clear ,
> Memo.Text (both illegal). What is legal?
Type Memo. then
Hi,
How do you write the contents of a Memo to a file and read back into a Memo?
I have tried all sorts, I am using Lazarus 1.0.6 on linux.
How this started was because I wanted to write the content of my Memo to
the clipboard and be able to paste it back in again, but I couldn't
figure out how
On 02/03/13 10:51, Michael Van Canneyt wrote:
This will definitely cause a memory leak, because the FPC code does not
know that an exception occurred in the constructor (you catch it with
Except), and hence will not call the destructor.
Thanks for the correction and explanation.
Howard
--
_
Hi Mattias,
sorry that I did not answer your Post before today, somehow I did not
see it.
But as I saw in svn you managed to find it out by yourself, thank you
for adding retina support to trunk!
Michael
Am 27.02.13 10:59, schrieb Mattias Gaertner:
On Sun, 17 Feb 2013 20:45:07 +0100
Micha
On Sat, 2 Mar 2013, Howard Page-Clark wrote:
On 02/03/13 5:45, Flávio Etrusco wrote:
On Fri, Mar 1, 2013 at 11:49 PM, Xiangrong Fang wrote:
Hi there,
If my class constructor looks like this:
constructor TMyClass.Create(fn: string);
begin
sl := TStringList.Create;
try
fs := TFil
On 02/03/13 5:45, Flávio Etrusco wrote:
On Fri, Mar 1, 2013 at 11:49 PM, Xiangrong Fang wrote:
Hi there,
If my class constructor looks like this:
constructor TMyClass.Create(fn: string);
begin
sl := TStringList.Create;
try
fs := TFileStream.Create(fn, fmOpenRead);
except
se
On 02.03.2013 03:49, Xiangrong Fang wrote:
Hi there,
If my class constructor looks like this:
constructor TMyClass.Create(fn: string);
begin
sl := TStringList.Create;
try
fs := TFileStream.Create(fn, fmOpenRead);
except
self.Destroy;
end;
end;
No, this is a bad idea. If
56 matches
Mail list logo
