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POHow can I access the palette of a TPicture.Graphic?
 

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  1. POHow can I access the palette of a TPicture.Graphic?
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    <p>I have searched the web for hours but I can not find anything about how to get the palette from a TPicture.Graphic. I also need to get the color values so I can pass these values to a TStringList for filling cells in a colorpicker.</p> <p>Here is the code that I currently have:</p> <pre><code>procedure TFormMain.OpenImage1Click( Sender: TObject ); var i: integer; S: TStringList; AColor: TColor; AColorCount: integer; N: string; Pal: PLogPalette; HPal: hPalette; begin if OpenPictureDialog1.Execute then begin Screen.Cursor := crHourGlass; try Pal := nil; try S := TStringList.Create; ABitmap.Free; // Release any existing bitmap ABitmap := TBitmap.Create; Image1.Picture.LoadFromFile( OpenPictureDialog1.Filename ); ABitmap.Canvas.Draw( 0, 0, Image1.Picture.Graphic ); GetMem( Pal, Sizeof( TLogPalette ) + Sizeof( TPaletteEntry ) * 255 ); Pal.palversion := $300; Pal.palnumentries := 256; for i := 0 to 255 do begin AColor := Pal.PalPalEntry[ i ].PeRed shl 16 + Pal.PalPalEntry[ i ].PeGreen shl 8 + Pal.PalPalEntry[ i ].PeBlue; N := ColorToString( AColor ); S.Add( N ); end; HPal := CreatePalette( Pal^ ); ABitmap.Palette := HPal; Memo1.Lines := S; finally; FreeMem( Pal ); end; S.Free; finally; Screen.Cursor := crDefault; end; end; end; </code></pre> <p>I am drawing to the canvas of ABitmap with the image contained in Image1.Picture.Graphic because I want to support all TPicture image types such as Bitmap, Jpeg, PngImage, and GIfImg.</p> <p>Any assistance would be appreciated. Am I on the correct path or is something different needed?</p>
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    1. COI have edited your question title and removed the first sentences, as the problem seems to be with getting access to an existing palette only, not with creating one.
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      1. USmghie
 

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