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Date Posted: 17:34:21 07/17/08 Thu
Author: Jon Grewer
Subject: 1 question

I am trying to use your TThumbnailMaker component in a program. I took the code below straight out of the demo with little modification:
It won't create a thumbnail from a JPG file though the same file works in the demo. ThumbnailCreator.FileCount = 0.
I traced the code and FindDibGraphicClass fails to find a DIB class for 'JPG'.

Could you point me in the right direction? Thanks!

Kind regards,
- Jon Grewer

procedure TForm1.Button2Click(Sender: TObject);
var
ThumbnailCreator : TThumbnailCreator;
FileNameMask : String;
OutputDirectory : String;
begin
FileNameMask := LastImage;
if not InputQuery( 'Thumbnail creation source', 'Example, C:\IMAGES\*.JPG', FileNameMask ) then
Exit;
{ Mar 12, 2003. Output was previously hardcoded to c:\temp }
OutputDirectory := FNBO.Path(LastImage);
if not InputQuery( 'Output directory', '', OutputDirectory ) then
Exit;
ThumbnailCreator := TThumbnailCreator.Create;
try
// ThumbnailCreator.OnProgress := Self.OnProgress;
ThumbnailCreator.EnlargeSmallImages := True;
ThumbnailCreator.AddFile( FileNameMask );
if ThumbnailCreator.FileCount = 0 then
begin
MessageDlg('Thumbnail file list is empty', mtError, [mbOk], 0);
Exit;
end;
ThumbnailCreator.OutputDirectory := OutputDirectory;
ThumbnailCreator.BackgroundColor := MakeRgb( 0, 0, 128 );
ThumbnailCreator.OverrideDestFormat := True;
ThumbnailCreator.DestFormat := ifTrueColor;
ThumbnailCreator.Execute;
finally
ThumbnailCreator.Free;
end;
end;

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