NAME

       SDL_SetWindowShape - Set the shape of a transparent window.

SYNOPSIS

       #include <SDL3/SDL_video.h>

       bool SDL_SetWindowShape(SDL_Window *window, SDL_Surface *shape);

DESCRIPTION

       This  sets the alpha channel of a transparent window and any fully transparent areas are also transparent
       to mouse clicks. If you are using something besides the SDL render API,  then  you  are  responsible  for
       drawing the alpha channel of the window to match the shape alpha channel to get consistent cross-platform
       results.

       The  shape  is copied inside this function, so you can free it afterwards. If your shape surface changes,
       you should call SDL_SetWindowShape() again to update the window.  This  is  an  expensive  operation,  so
       should be done sparingly.

       The window must have been created with the SDL_WINDOW_TRANSPARENT flag.

FUNCTION PARAMETERS

       window the window.

       shape  the surface representing the shape of the window, or NULL to remove any current shape.

RETURN VALUE

       for more information.

THREAD SAFETY

       This function should only be called on the main thread.

AVAILABILITY

       This function is available since SDL 3.2.0.

Simple Directmedia Layer                           SDL 3.2.20                              SDL_SetWindowShape(3)