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Date Posted: 15:57:24 08/20/01 Mon
Author: Timothy Dang
Subject: Re: New Error
In reply to: darrell 's message, "New Error" on 19:29:20 08/08/01 Wed

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);
Bitmap : Graphics.TBitmap;
ScreenDC : HDC;
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);
// if (GetDeviceCaps(ScreenDC, Windows.RASTERCAPS) and Windows.RC_PALETTE) <> 0 then
// begin
{ screen uses a palette }
Bitmap := Graphics.TBitmap.Create;
Bitmap.LoadFromClipboardFormat(AFormat, AData, APalette);
Self.NewImage( Bitmap.Width, Bitmap.Height, ifTrueColor, nil, 0, 0);
Self.Canvas.Draw(0, 0, Bitmap);
// end
// else
// AssignFromBitmapHandle(AData);
ReleaseDC(0, ScreenDC);

>I tried this on a new app according to your advice
>procedure TForm1.Button1Click(Sender: TObject);
>DibGraphic : TDibGraphic;
>DibGraphic := EnDiGrph.NewDibGraphic('c:\circles.bmp');
>Image1.Picture.Graphic := DibGraphic;
>if Image1.Picture.Graphic <> nil then
>New Error "Graphic Files of .bmp format are not
>supported or not registered".
>Please advise

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