Set the size of a window's client area.
void SDL_SetWindowSize(SDL_Window * window, int w, int h);
|window||the window to change|
|w||the width of the window in pixels, in screen coordinates, must be > 0|
|h||the height of the window in pixels, in screen coordinates, must be > 0|
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() or SDL_GetRendererOutputSize() to get the real client area size in pixels.
Fullscreen windows automatically match the size of the display mode, and you should use SDL_SetWindowDisplayMode() to change their size.
This function is available since SDL 2.0.0.