# SDL_MaximizeWindow

Request that the window be made as large as possible.

## Header File

Defined in [<SDL3/SDL_video.h>](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_video.h)

## Syntax

```c
bool SDL_MaximizeWindow(SDL_Window *window);
```

## Function Parameters

|                            |            |                         |
| -------------------------- | ---------- | ----------------------- |
| [SDL_Window](SDL_Window) * | **window** | the window to maximize. |

## Return Value

(bool) Returns true on success or false on failure; call
[SDL_GetError](SDL_GetError)() for more information.

## Remarks

Non-resizable windows can't be maximized. The window must have the
[SDL_WINDOW_RESIZABLE](SDL_WINDOW_RESIZABLE) flag set, or this will have no
effect.

On some windowing systems this request is asynchronous and the new window
state may not have have been applied immediately upon the return of this
function. If an immediate change is required, call
[SDL_SyncWindow](SDL_SyncWindow)() to block until the changes have taken
effect.

When the window state changes, an
[SDL_EVENT_WINDOW_MAXIMIZED](SDL_EVENT_WINDOW_MAXIMIZED) event will be
emitted. Note that, as this is just a request, the windowing system can
deny the state change.

When maximizing a window, whether the constraints set via
[SDL_SetWindowMaximumSize](SDL_SetWindowMaximumSize)() are honored depends
on the policy of the window manager. Win32 and macOS enforce the
constraints when maximizing, while X11 and Wayland window managers may
vary.

## Thread Safety

This function should only be called on the main thread.

## Version

This function is available since SDL 3.2.0.

## See Also

- [SDL_MinimizeWindow](SDL_MinimizeWindow)
- [SDL_RestoreWindow](SDL_RestoreWindow)
- [SDL_SyncWindow](SDL_SyncWindow)

----
[CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryVideo](CategoryVideo)

