(This is the legacy documentation for SDL2, the previous stable version; SDL3 is the current stable version.)

SDL_GetRendererOutputSize

Get the output size in pixels of a rendering context.

Header File

Syntax

int SDL_GetRendererOutputSize(SDL_Renderer * renderer,
                              int *w, int *h);

Function Parameters

SDL_Renderer *	renderer	the rendering context.
int *	w	an int filled with the width.
int *	h	an int filled with the height.

Return Value

(int) Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.

Remarks

Due to high-dpi displays, you might end up with a rendering context that has more pixels than the window that contains it, so use this instead of SDL_GetWindowSize() to decide how much drawing area you have.

Version

This function is available since SDL 2.0.0.