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


Get the size of a window's client area.

Header File

Defined in SDL_video.h


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

Function Parameters

SDL_Window * window the window to query the width and height from.
int * w a pointer filled in with the width of the window, in screen coordinates, may be NULL.
int * h a pointer filled in with the height of the window, in screen coordinates, may be NULL.


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

The window size in screen coordinates may differ from the size in pixels, if the window was created with SDL_WINDOW_ALLOW_HIGHDPI on a platform with high-dpi support (e.g. iOS or macOS). Use SDL_GL_GetDrawableSize(), SDL_Vulkan_GetDrawableSize(), or SDL_GetRendererOutputSize() to get the real client area size in pixels.


This function is available since SDL 2.0.0.

See Also

CategoryAPI, CategoryAPIFunction, CategoryVideo

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