Get the size of a window's client area.
void SDL_GetWindowSize(SDL_Window * window, int *w, int *h);
|window||the window to query the width and height from|
|w||a pointer filled in with the width of the window, in screen coordinates, may be NULL|
|h||a pointer filled in with the height of the window, in screen coordinates, may be NULL|
NULL can safely be passed as the
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.