###### (This is the legacy documentation for stable SDL2, the current stable version; [SDL3](https://wiki.libsdl.org/SDL3/) is the current development version.) # SDL_GDKRunApp Initialize and launch an SDL GDK application. ## Header File Defined in [SDL_main.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_main.h) ## Syntax ```c int SDL_GDKRunApp(SDL_main_func mainFunction, void *reserved); ``` ## Function Parameters | | | | -------------------- | --------------------------------------------------------------- | | **mainFunction** | the SDL app's C-style main(), an [SDL_main_func](SDL_main_func) | | **reserved** | reserved for future use; should be NULL | ## Return Value Returns 0 on success or -1 on failure; call [SDL_GetError](SDL_GetError)() to retrieve more information on the failure. ## Version This function is available since SDL 2.24.0. ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction)