C
#define USE_TRANSPARENT_COLOR
Overview
To enable support for transparent color in PutImage(). Enabling this macro enables the use of a transparent color (set by TransparentColorEnable()) in rendering images by PutImage(). When a pixel in the image matches the transparent color set, the pixel is not rendered to the screen. This is useful in rendering rounded icons or images to the screen with a complex background. Define this in GraphicsConfig.h