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Date Posted: 15:59:32 08/20/01 Mon
Author: Timothy Dang
Subject: Re: New Error
In reply to: Timothy Dang 's message, "Re: New Error" on 15:57:24 08/20/01 Mon

Sorry I posted on the wrong message. Please ignore this message.

>I had the same problem with Windows 2000 and NT 4 and
>this is what I have changed and the "GetDIB Failed"
>went away.
>
>procedure TDibGraphic.LoadFromClipboardFormat(
> AFormat: Word; AData: THandle;
> APalette: HPalette);
>var
> Bitmap : Graphics.TBitmap;
> ScreenDC : HDC;
>begin
> if (AFormat <> CF_BITMAP) or (AData = 0) then
> raise EInvalidGraphic.Create(
> Format(msgUnsupportedClipboardFormat,
>[AFormat]));
>
> { MB Jan 08, 2000. In 256 color video mode
>AssignFromBitmapHandle does not
> properly handle the palette, so a simple
>workaround is to load the image in the
> TBitmap class, then drawing it on the canvas of
>the TDibGraphic. }
> ScreenDC := GetDC(0);
> try
>// if (GetDeviceCaps(ScreenDC,
>Windows.RASTERCAPS) and Windows.RC_PALETTE) <> 0 then
>// begin
> { screen uses a palette }
> Bitmap := Graphics.TBitmap.Create;
> try
>
>Bitmap.LoadFromClipboardFormat(AFormat, AData,
>APalette);
> Self.NewImage( Bitmap.Width,
>Bitmap.Height, ifTrueColor, nil, 0, 0);
> Self.Canvas.Draw(0, 0, Bitmap);
> finally
> Bitmap.Free;
> end;
>// end
>// else
>// AssignFromBitmapHandle(AData);
> finally
> ReleaseDC(0, ScreenDC);
> end;
>end;
>
>
>>I tried this on a new app according to your advice
>>******************************************************
>*
>>*****
>>
>>procedure TForm1.Button1Click(Sender: TObject);
>>var
>>DibGraphic : TDibGraphic;
>>begin
>>DibGraphic :=
>EnDiGrph.NewDibGraphic('c:\circles.bmp');
>>Image1.Picture.Graphic := DibGraphic;
>>DibGraphic.Free;
>>if Image1.Picture.Graphic <> nil then
>>Image1.Picture.Graphic.LoadFromFile('c:\circles.bmp');
>>end;
>>
>>******************************************************
>*
>>*****
>>New Error "Graphic Files of .bmp format are not
>>supported or not registered".
>>
>>Please advise
>>
>>Thanks,
>>
>>
>>Darrell

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