SDL Wiki
(This is the documentation for SDL3, which is under heavy development and the API is changing! SDL2 is the current stable version!)


Get the size of a window's client area.


int SDL_GetWindowSize(SDL_Window *window, int *w, int *h);

Function Parameters

window the window to query the width and height from
w a pointer filled in with the width of the window, may be NULL
h a pointer filled in with the height of the window, may be NULL

Return Value

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


NULL can safely be passed as the w or h parameter if the width or height value is not desired.

The window pixel size may differ from its window coordinate size if the window is on a high pixel density display. Use SDL_GetWindowSizeInPixels() or SDL_GetRenderOutputSize() to get the real client area size in pixels.


This function is available since SDL 3.0.0.

CategoryAPI, CategoryVideo

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