SDL_GetWindowSize - Man Page

#include <SDL3/SDL_video.h>

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

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.

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.

for more information.

This function should only be called on the main thread.

This function is available since SDL 3.2.0.

SDL_GetRenderOutputSize(3), SDL_GetWindowSizeInPixels(3), SDL_SetWindowSize(3)

SDL_GetWindowBordersSize(3), SDL_GetWindowSizeInPixels(3), SDL_SetWindowSize(3).