VoyForums
[ Show ]
Support VoyForums
[ Shrink ]
VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

[ Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 1, 2, 3, 4, 5, 6, [7], 8, 9, 10 ]

[ Next Thread | Previous Thread | Next Message | Previous Message ]

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);
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

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Replies:

[ Contact Forum Admin ]

Forum timezone: GMT-5
VF Version: 3.00b, ConfDB:
Before posting please read our privacy policy.
VoyForums(tm) is a Free Service from Voyager Info-Systems.
Copyright © 1998-2019 Voyager Info-Systems. All Rights Reserved.