Re: [Lazarus] TFileStream
= snip === case ftype of 43://'+' begin FS:=TFileStream.Create(fname, fmshareDenyWrite); Try FS.Seek(pos,soFromBeginning); FS.ReadBuffer(fldheader[0],4); increm:=LEtoN(PLongInt(fldheader)^)+1; for m:=0 to 3 do begin fldheader[m]:=increm and 255; increm:=increm shr 8; end; FS.Seek(pos,soFromBeginning); FS.WriteBuffer(fldheader[0],4); - Fails here Finally FreeAndNil(FS); end; end; end; = snip === Continuing on the same block: I am trying to read a block of 4 bytes, increment it by one and write it back again. However, if fails on the write. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TFileStream
On Thu, 29 Jan 2009, Dave Coventry wrote: = snip === case ftype of 43://'+' begin FS:=TFileStream.Create(fname, fmshareDenyWrite); Try FS.Seek(pos,soFromBeginning); FS.ReadBuffer(fldheader[0],4); increm:=LEtoN(PLongInt(fldheader)^)+1; for m:=0 to 3 do begin fldheader[m]:=increm and 255; increm:=increm shr 8; end; FS.Seek(pos,soFromBeginning); FS.WriteBuffer(fldheader[0],4); - Fails here Finally FreeAndNil(FS); end; end; end; = snip === Continuing on the same block: I am trying to read a block of 4 bytes, increment it by one and write it back again. However, if fails on the write. Probably because you failed to specify fmOpenReadWrite. fmshareDenyWrite does not automatically mean write access. Michael. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] TFileStream
Dave Coventry wrote: ... FS:=TFileStream.Create(fname, fmshareDenyWrite); ... I am trying to read a block of 4 bytes, increment it by one and write it back again. However, if fails on the write. Please read carefully what have you written: FS := TFileStream.Create(fname, fmShareDenyWrite); you passed only fmShareDenyWrite but you have not told to the file stream that you want to write :) There are few modes in which you can open your stream: fmCreate= $; fmOpenRead = 0; fmOpenWrite = 1; fmOpenReadWrite = 2; You had not passed any of them = you passed 0 = fmOpenRead. As result you can only read. If you want to read and write then pass fmOpenReadWrite as mode: FS := TFileStream.Create(fname, fmOpenReadWrite or fmShareDenyWrite); Best regards, Paul Ishenin. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] How I add elements into a colums of TKOLListView with several colums?
Is this possible? Best regards. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] fsStayOnTop under windows
En/na Henry Vermaak ha escrit: 2009/1/28 Luca Olivetti l...@wetron.es: En/na Henry Vermaak ha escrit: Very funny, but it's not the case at hand: I just need the windows of my application to always stay on top to the windows of another application. I can do it in delphi and lazarus/qt, I just need a hack to do the same under win32. so what happens if the other application wants to be on top of yours? The other application never wants to be on top of mine. Really. i'm sure he's saying the same about your application :) There's no he. This isn't a general purpose pc, where I'm fighting for screen space with other applications. This pc will be running just these two apps, and I'm responsible for both, but since the development environment of the other application is not really good (actually it's a POS), I'm trying to offload some of the development to lazarus, so that when the user clicks on a button in the other app, it will spawn a lazarus app that should stay on top (because the user can click on the previous app to open another lazarus window and so on and so forth). Bye -- Luca Olivetti Wetron Automatización S.A. http://www.wetron.es/ Tel. +34 93 5883004 Fax +34 93 5883007 ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] fsStayOnTop under windows
En/na JoshyFun ha escrit: Affected file is win32callback.inc Thanks, that was exactly what I had in mind. It works beautifully. Now you must control the StayOnTop using the HWND_TOPMOST and the setwindowlong. Setting fsStayOnTop seems to be enough. Bye -- Luca Olivetti Wetron Automatización S.A. http://www.wetron.es/ Tel. +34 93 5883004 Fax +34 93 5883007 ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] Drawing text in WinCE
Hi All, I'm new to Lazarus having decided to switch from Delphi for a WinCE project. I'm stumped though. Labels on forms display garbage characters. Having spent a whole two days learning about Lazarus internals, Unicode, Widestrings, etc., I'm now pulling out my hair and the project cannot continue. The following code produces the same garbage characters: procedure TGPSForm.SatellitePaintBoxPaint(Sender: TObject); var Rect: TRect; Dx: Integer; W: WideString; begin with SatellitePaintBox do begin Rect:=ClientRect; W:='Abc'; Windows.ExtTextOutW(Canvas.Handle, 1, 1, 0, LPRECT(@Rect), PWideChar(W), Length(W), @Dx); end; end; Any ideas? Thanks, Paul. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Drawing text in WinCE
Paul van Helden wrote: Hi All, I'm new to Lazarus having decided to switch from Delphi for a WinCE project. I'm stumped though. Labels on forms display garbage characters. Having spent a whole two days learning about Lazarus internals, Unicode, Widestrings, etc., I'm now pulling out my hair and the project cannot continue. The following code produces the same garbage characters: procedure TGPSForm.SatellitePaintBoxPaint(Sender: TObject); var Rect: TRect; Dx: Integer; W: WideString; begin with SatellitePaintBox do begin Rect:=ClientRect; W:='Abc'; Windows.ExtTextOutW(Canvas.Handle, 1, 1, 0, LPRECT(@Rect), PWideChar(W), Length(W), @Dx); end; end; Any ideas? Hmm, Dunno, I use KOL without major problems. But what is output when you try: with SatellitePaintBox do begin Canvas.Textou(1,1,'Abc'); end; ? John ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] fsStayOnTop under windows
Hello Hans-Peter, Thursday, January 29, 2009, 3:51:03 AM, you wrote: HV so what happens if the other application wants to be on top of yours? In Windows at least, topmost windows are implemented as a second windows layer, one for normal windows and other for topmost ones. HPD Which Windows version(s)? AFAIK all Windows versions. -- Best regards, JoshyFun ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Drawing text in WinCE
It works for me ... it's a rather wierd problem ... TLabel not working? What Lazarus version are you using? How did you install support for wince? Do you have a screenshot of the problem? Also, are your source files UTF-8 encoded? If you start a new project, put only a label in the form and run that does it work? Are you using a device or the emulator? Can you test with the emulator? (instructions to install it in the wiki) -- Felipe Monteiro de Carvalho ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] ptInRect question
Hi, I have a question regarding the following function: function PtInRect(const Rect : TRect;const p : TPoint) : Boolean; begin PtInRect:=(p.y=Rect.Top) and (p.yRect.Bottom) and (p.x=Rect.Left) and (p.xRect.Right); end; Is there a reason why the top/left sides are included (=), and the left/bottom sides are not included ? I would expect them to be included as well. Michael. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] Interact with M$ Word
Currently I'm working on an app that needs to interact with M$ Word. The intended users are computer noobs, so I expect no knowledge from them whatsoever. Problem. My app calculates/compose tabular data (in the order of 6 cols x 50 rows). These data have to be inserted into a word document as a word table. (Most users will not be able to convert text with tabs to a table in Word, no matter how often explained). Two different approaches come to mind. First approach: Paste the data (all strings) onto the clipboard in Word Table format. (I can get the users to paste this in their document...) Does anyone have a clue as to how to achieve this? Second approach: Use MS Office automation. Create new document from template (how do I know where user's templates (*.dot files) are?). Go to right place in document. Create table Insert data into table. There is a basic wiki document on how to open a word doc in Word with automation, but I never used office automation at all, so all steps I have no clue as to how to achieve them. If at all possible I'd prefer the first approach. Anyone got some suggestions or knows a good place to start looking. Mind you, I'm really just a basic-stuff programmer. Bart ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] ptInRect question
Delphi rectangles are used to wrap Win32 GDI calls. here's a quote from msdn FillRect function: -= start quote =- When filling the specified rectangle, FillRect does not include the rectangle's right and bottom sides. GDI fills a rectangle up to, but not including, the right column and bottom row, regardless of the current mapping mode. -= end of quote =- so function ptInRect can be determined if point is inside filled rect or not. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] ptInRect question
AFAIK, Delphi compat.Here's the delphi code from Types unit. function PtInRect(const Rect: TRect; const P: TPoint): Boolean; begin Result := (P.X = Rect.Left) and (P.X Rect.Right) and (P.Y = Rect.Top) and (P.Y Rect.Bottom); end; ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] ptInRect question
On Fri, 30 Jan 2009, dmitry boyarintsev wrote: AFAIK, Delphi compat.Here's the delphi code from Types unit. function PtInRect(const Rect: TRect; const P: TPoint): Boolean; begin Result := (P.X = Rect.Left) and (P.X Rect.Right) and (P.Y = Rect.Top) and (P.Y Rect.Bottom); end; I found this out already, but why, what is the rationale ? Michael. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] Canvas clipping ?
Hi, Is TCanvas clipping supported ? I set cliprect, but nothing happens... Michael. ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] ptInRect question
I found this out already, but why, what is the rationale ? i have only one thought, about the reason for this: if you follow the Microsoft GDI rules, then you'll get width := r.Right - r.Left; otherwise (if r.Right is also filled then drawn), you'll end-up with additional operation width := r.Right - r.Left + 1; ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
Re: [Lazarus] Interact with M$ Word
Bart ha scritto: Currently I'm working on an app that needs to interact with M$ Word. The intended users are computer noobs, so I expect no knowledge from them whatsoever. ... Anyone got some suggestions or knows a good place to start looking. Mind you, I'm really just a basic-stuff programmer. If the dimensions of your table are fixed, there is another method that avoids you lot af headaches: build the document you need with word, put into the cells special tags, i.e: %r01c01, %r02c01,..., an so on. Then save the document as rtf (rich text format) so your program can read in the file, substitute the tags with your values and save it again. Hope this can help, bye -- tiziano de togni __ http://digilander.libero.it/tizzziano/ ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
[Lazarus] KeyDown Bugs ?
I have a problem
Look at this code
procedure TForm1.Edit1KeyDown(Sender: TObject; var Key: Word; Shift:
TShiftState );
begin
Key:=0;
end;
In this code, Edit1.Text still empty string but If I change the code like this
procedure TForm1.Edit1KeyDown(Sender: TObject; var Key: Word; Shift:
TShiftState);
begin
Key:=0;
ShowMessage('a');
end;
then the Edit1.Text become fill by char that I stroke.
Is this a bug ?
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Re: [Lazarus] ptInRect question
On Fri, Jan 30, 2009 at 12:11 AM, Michael Van Canneyt mich...@freepascal.org wrote: function PtInRect(const Rect : TRect;const p : TPoint) : Boolean; begin PtInRect:=(p.y=Rect.Top) and (p.yRect.Bottom) and (p.x=Rect.Left) and (p.xRect.Right); end; Is there a reason why the top/left sides are included (=), and the left/bottom sides are not included ? I would expect them to be included as well. I would guess to conform with Microsoft's GDI behaviour. GDI rectangles are drawn one pixel less than what you specified. Probably also relates to Mattias's answer, that a pixel also takes up a certain amount of space. I remember in fpGUI I had plenty of issues getting the GDI and X11 drawing backends to work identical. Hence I created a custom TfpgRect which includes the Width and Height values. In fpGUI I tried to make all Canvas drawing methods use Top,Left,Width and Height. This gave a more consistent and expected behaviour. TfpgRect = object // not class for static allocations Top: TfpgCoord; Left: TfpgCoord; Width: TfpgCoord; Height: TfpgCoord; procedure SetRect(aleft, atop, awidth, aheight: TfpgCoord); function Bottom: TfpgCoord; function Right: TfpgCoord; procedure SetBottom(Value: TfpgCoord); procedure SetRight(Value: TfpgCoord); end; Regards, - Graeme - ___ fpGUI - a cross-platform Free Pascal GUI toolkit http://opensoft.homeip.net/fpgui/ ___ Lazarus mailing list Lazarus@lazarus.freepascal.org http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
