Icons in disabled Toolbuttons not drawn in gray

We have modified LMDGlyphs, TLMDButtonGlyph.DrawButtonGlyph

In section

  if FUsePng then

we change

  FPngGlyph.Draw(Canvas, Rect(GlyphPos.X, GlyphPos.Y, GlyphPos.X + IcW, GlyphPos.Y + IcH));

to


          if State = ebsDisabled then
          begin
            LPNGGray := TLMDPNGGrayscaleFilter.Create;
            try
              LPNGGray.SourceImage := FPngGlyph;
              LPNGGray.ResultImage.Draw(Canvas, Rect(GlyphPos.X, GlyphPos.Y, GlyphPos.X + IcW, GlyphPos.Y + IcH));
            finally
              LPNGGray.Free;
            end;
          end
          else
            FPngGlyph.Draw(Canvas, Rect(GlyphPos.X, GlyphPos.Y, GlyphPos.X + IcW, GlyphPos.Y + IcH));

for non streched drawing.

This work for us to draw the images correct in gray-scaled.
Please check this an make it also available for streched drawing (we don't use streched drawing).