[fpc-pascal] Does FCL Image support transparency?

[Reimar Grabowski]

Hi,

I want to put watermarks on images in a command line application.
This doesn't do the trick:

ScaledImage:=TFPCompactImgRGBA8Bit.Create(Width, Height);
Canvas:=TFPImageCanvas.Create(ScaledImage); // TFPImageCanvas
Canvas.StretchDraw(0,0,Width,Height,Image); // Image is TFPCompactImgRGB8Bit 
Canvas.Draw(0,0,Watermark); // Watermark is an TFPCompactImgRGBA8Bit

Watermark is a transparent PNG loaded from disk but the transparency is not respected when drawing it onto ScaledImage.

Can FCL Image do this and if not what are my alternatives?

R.