---
name: "SDL_GetWindowSize"
section: "3"
platform: "linux"
package: "libsdl3-doc"
version: "3.2.10+ds-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SDL_GetWindowSize"
---

# SDL\_GetWindowSize(3)

Get the size of a window's client area.

## NAME

SDL\_GetWindowSize - Get the size of a window's client area.

## HEADER FILE

Defined in SDL3/SDL\_video.h

## SYNOPSIS

```
#include "SDL3/SDL.h"
```

**bool SDL\_GetWindowSize(SDL\_Window \*window, int \*w, int \*h);**

## DESCRIPTION

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.

## 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 true on success or false on failure; call

**SDL\_GetError** () for more information.

## THREAD SAFETY

This function should only be called on the main thread.

## AVAILABILITY

This function is available since SDL 3.2.0.

## SEE ALSO

**•**(3), [**SDL\_GetRenderOutputSize**(3)](/SDL_GetRenderOutputSize/3.md), **•**(3), [**SDL\_GetWindowSizeInPixels**(3)](/SDL_GetWindowSizeInPixels/3.md), **•**(3), [**SDL\_SetWindowSize**(3)](/SDL_SetWindowSize/3.md)