I'd like to load a BMP file then change chosen color (0xFF00FF) to transparent and save it as PNG file. I'm using a code from other thread. I've modified it a little, but it still doesn't work. My program displays image with transparent color correctly, however saves a black image file. #include <Constants.au3> #include <WinAPIEx.au3> #include <WindowsConstants.au3> #include <GUIConstantsEx.au3> #include <ScreenCapture.au3> #include <WinAPI.au3> Global C