Delphi XE7 - Make PNG image transparent inside Form

Question

I set the Form Color to : clFichsia and TransparentColor: True and TransparentColorValue to : clFuchsia. I need to remove the clFuchsia color from the Form. Normally the image is transparent but when i load it in the application the color of the Form doesn't disappear.

How my application looks like:

Answer 1

There are two different ways to handle transparency:

1) the old simplified (Windows/Delphi) way, where a specific RGB color is made transparent. This method does not allow any partial transparency (opacity is either 0% or 100%).

2) the "new" way, where you use an image with an alpha-channel, eg a PNG image. Each pixel has an opacity value in addition to the RGB value, which allows partial transparency (eg for anti-aliasing).

You are mixing those two methods. You load a PNG image with an alpha channel (method 2), but then you also set a transparent color (method 1). And the reason it looks that bad, is because the "fuchsia" RGB value in your image is not exactly the same everywhere.