###### (This is the legacy documentation for SDL2, the previous stable version; [SDL3](https://wiki.libsdl.org/SDL3/) is the current stable version.)
# SDL_SysWMinfo

The custom window manager information structure.

## Header File

Defined in [SDL_syswm.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_syswm.h)

## Syntax

```c
struct SDL_SysWMinfo
{
    SDL_version version;
    SDL_SYSWM_TYPE subsystem;
    union
    {
#if defined(SDL_VIDEO_DRIVER_WINDOWS)
        struct
        {
            HWND window;                /**< The window handle */
            HDC hdc;                    /**< The window device context */
            HINSTANCE hinstance;        /**< The instance handle */
        } win;
#endif
#if defined(SDL_VIDEO_DRIVER_WINRT)
        struct
        {
            IInspectable * window;      /**< The WinRT CoreWindow */
        } winrt;
#endif
#if defined(SDL_VIDEO_DRIVER_X11)
        struct
        {
            Display *display;           /**< The X11 display */
            Window window;              /**< The X11 window */
        } x11;
#endif
#if defined(SDL_VIDEO_DRIVER_DIRECTFB)
        struct
        {
            IDirectFB *dfb;             /**< The directfb main interface */
            IDirectFBWindow *window;    /**< The directfb window handle */
            IDirectFBSurface *surface;  /**< The directfb client surface */
        } dfb;
#endif
#if defined(SDL_VIDEO_DRIVER_COCOA)
        struct
        {
#if defined(__OBJC__) && defined(__has_feature)
        #if __has_feature(objc_arc)
            NSWindow __unsafe_unretained *window; /**< The Cocoa window */
        #else
            NSWindow *window;                     /**< The Cocoa window */
        #endif
#else
            NSWindow *window;                     /**< The Cocoa window */
#endif
        } cocoa;
#endif
#if defined(SDL_VIDEO_DRIVER_UIKIT)
        struct
        {
#if defined(__OBJC__) && defined(__has_feature)
        #if __has_feature(objc_arc)
            UIWindow __unsafe_unretained *window; /**< The UIKit window */
        #else
            UIWindow *window;                     /**< The UIKit window */
        #endif
#else
            UIWindow *window;                     /**< The UIKit window */
#endif
            GLuint framebuffer; /**< The GL view's Framebuffer Object. It must be bound when rendering to the screen using GL. */
            GLuint colorbuffer; /**< The GL view's color Renderbuffer Object. It must be bound when SDL_GL_SwapWindow is called. */
            GLuint resolveFramebuffer; /**< The Framebuffer Object which holds the resolve color Renderbuffer, when MSAA is used. */
        } uikit;
#endif
#if defined(SDL_VIDEO_DRIVER_WAYLAND)
        struct
        {
            struct wl_display *display;             /**< Wayland display */
            struct wl_surface *surface;             /**< Wayland surface */
            void *shell_surface;                    /**< DEPRECATED Wayland shell_surface (window manager handle) */
            struct wl_egl_window *egl_window;       /**< Wayland EGL window (native window) */
            struct xdg_surface *xdg_surface;        /**< Wayland xdg surface (window manager handle) */
            struct xdg_toplevel *xdg_toplevel;      /**< Wayland xdg toplevel role */
            struct xdg_popup *xdg_popup;            /**< Wayland xdg popup role */
            struct xdg_positioner *xdg_positioner;  /**< Wayland xdg positioner, for popup */
        } wl;
#endif
#if defined(SDL_VIDEO_DRIVER_MIR)  /* no longer available, left for API/ABI compatibility. Remove in 2.1! */
        struct
        {
            void *connection;  /**< Mir display server connection */
            void *surface;  /**< Mir surface */
        } mir;
#endif

#if defined(SDL_VIDEO_DRIVER_ANDROID)
        struct
        {
            ANativeWindow *window;
            EGLSurface surface;
        } android;
#endif

#if defined(SDL_VIDEO_DRIVER_OS2)
        struct
        {
            HWND hwnd;                  /**< The window handle */
            HWND hwndFrame;             /**< The frame window handle */
        } os2;
#endif

#if defined(SDL_VIDEO_DRIVER_VIVANTE)
        struct
        {
            EGLNativeDisplayType display;
            EGLNativeWindowType window;
        } vivante;
#endif

#if defined(SDL_VIDEO_DRIVER_KMSDRM)
        struct
        {
            int dev_index;               /**< Device index (ex: the X in /dev/dri/cardX) */
            int drm_fd;                  /**< DRM FD (unavailable on Vulkan windows) */
            struct gbm_device *gbm_dev;  /**< GBM device (unavailable on Vulkan windows) */
        } kmsdrm;
#endif

        /* Make sure this union is always 64 bytes (8 64-bit pointers). */
        /* Be careful not to overflow this if you add a new target! */
        Uint8 dummy[64];
    } info;
};
```

## Remarks

When this structure is returned, it holds information about which low level
system it is using, and will be one of [SDL_SYSWM_TYPE](SDL_SYSWM_TYPE).

----
[CategoryAPI](CategoryAPI), [CategoryAPIStruct](CategoryAPIStruct), [CategorySYSWM](CategorySYSWM)