Added the ability to get the UIKit window through the SDL API.

You can also do this through the native API:
	UIWindow *window = [[UIApplication sharedApplication] keyWindow];

Also needed to name the union for events and window info.

include/SDL_syswm.h

@@ -88,6 +88,14 @@ typedef struct _NSWindow NSWindow;
 #endif
 #endif
 
+#if defined(SDL_VIDEO_DRIVER_UIKIT)
+#ifdef __OBJC__
+#include <UIKit/UIKit.h>
+#else
+typedef struct _UIWindow UIWindow;
+#endif
+#endif
+
 /** 
  *  These are the various supported windowing subsystems
  */
@@ -98,6 +106,7 @@ typedef enum
     SDL_SYSWM_X11,
     SDL_SYSWM_DIRECTFB,
     SDL_SYSWM_COCOA,
+    SDL_SYSWM_UIKIT,
 } SDL_SYSWM_TYPE;
 
 /**
@@ -133,7 +142,13 @@ struct SDL_SysWMmsg
             /* No Cocoa window events yet */
         } cocoa;
 #endif
-    } /*msg*/;
+#if defined(SDL_VIDEO_DRIVER_UIKIT)
+        struct
+        {
+            /* No UIKit window events yet */
+        } uikit;
+#endif
+    } msg;
 };
 
 /**
@@ -175,7 +190,13 @@ struct SDL_SysWMinfo
             NSWindow *window;           /* The Cocoa window */
         } cocoa;
 #endif
-    } /*info*/;
+#if defined(SDL_VIDEO_DRIVER_UIKIT)
+        struct
+        {
+            UIWindow *window;           /* The UIKit window */
+        } uikit;
+#endif
+    } info;
 };
 
 #endif /* SDL_PROTOTYPES_ONLY */

src/video/cocoa/SDL_cocoawindow.m

@@ -747,7 +747,7 @@ Cocoa_GetWindowWMInfo(_THIS, SDL_Window * window, SDL_SysWMinfo * info)
 
     if (info->version.major <= SDL_MAJOR_VERSION) {
         info->subsystem = SDL_SYSWM_COCOA;
-        info->cocoa.window = nswindow;
+        info->info.cocoa.window = nswindow;
         return SDL_TRUE;
     } else {
         SDL_SetError("Application not compiled with SDL %d.%d\n",

src/video/uikit/SDL_uikitvideo.m

@@ -87,6 +87,7 @@ UIKit_CreateDevice(int devindex)
     device->PumpEvents = UIKit_PumpEvents;
 	device->CreateWindow = UIKit_CreateWindow;
 	device->DestroyWindow = UIKit_DestroyWindow;
+    device->GetWindowWMInfo = UIKit_GetWindowWMInfo;
 	
 	
 	/* OpenGL (ES) functions */

src/video/uikit/SDL_uikitwindow.h

@@ -31,6 +31,8 @@ typedef struct SDL_WindowData SDL_WindowData;
 
 extern int UIKit_CreateWindow(_THIS, SDL_Window * window);
 extern void UIKit_DestroyWindow(_THIS, SDL_Window * window);
+extern SDL_bool UIKit_GetWindowWMInfo(_THIS, SDL_Window * window,
+                                      struct SDL_SysWMinfo * info);
 
 @class UIWindow;
 

src/video/uikit/SDL_uikitwindow.m

@@ -21,6 +21,7 @@
 */
 #include "SDL_config.h"
 
+#include "SDL_syswm.h"
 #include "SDL_video.h"
 #include "SDL_mouse.h"
 #include "SDL_assert.h"
@@ -36,7 +37,6 @@
 #import "SDL_uikitopenglview.h"
 #import "SDL_renderer_sw.h"
 
-#include <UIKit/UIKit.h>
 #include <Foundation/Foundation.h>
 
 static int SetupWindowData(_THIS, SDL_Window *window, UIWindow *uiwindow, SDL_bool created)
@@ -85,7 +85,8 @@ static int SetupWindowData(_THIS, SDL_Window *window, UIWindow *uiwindow, SDL_bo
     
 }
 
-int UIKit_CreateWindow(_THIS, SDL_Window *window) {
+int
+UIKit_CreateWindow(_THIS, SDL_Window *window) {
         
     SDL_VideoDisplay *display = window->display;
     UIScreen *uiscreen = (UIScreen *) display->driverdata;
@@ -154,7 +155,8 @@ int UIKit_CreateWindow(_THIS, SDL_Window *window) {
     
 }
 
-void UIKit_DestroyWindow(_THIS, SDL_Window * window) {
+void
+UIKit_DestroyWindow(_THIS, SDL_Window * window) {
     SDL_WindowData *data = (SDL_WindowData *)window->driverdata;
     if (data) {
         [data->uiwindow release];
@@ -163,4 +165,20 @@ void UIKit_DestroyWindow(_THIS, SDL_Window * window) {
     }
 }
 
+SDL_bool
+UIKit_GetWindowWMInfo(_THIS, SDL_Window * window, SDL_SysWMinfo * info)
+{
+    UIWindow *uiwindow = ((SDL_WindowData *) window->driverdata)->uiwindow;
+
+    if (info->version.major <= SDL_MAJOR_VERSION) {
+        info->subsystem = SDL_SYSWM_UIKIT;
+        info->info.uikit.window = uiwindow;
+        return SDL_TRUE;
+    } else {
+        SDL_SetError("Application not compiled with SDL %d.%d\n",
+                     SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
+        return SDL_FALSE;
+    }
+}
+
 /* vi: set ts=4 sw=4 expandtab: */

src/video/win32/SDL_win32events.c

@@ -113,10 +113,10 @@ WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
 
         SDL_VERSION(&wmmsg.version);
         wmmsg.subsystem = SDL_SYSWM_WINDOWS;
-        wmmsg.win.hwnd = hwnd;
+        wmmsg.msg.win.hwnd = hwnd;
-        wmmsg.win.msg = msg;
+        wmmsg.msg.win.msg = msg;
-        wmmsg.win.wParam = wParam;
+        wmmsg.msg.win.wParam = wParam;
-        wmmsg.win.lParam = lParam;
+        wmmsg.msg.win.lParam = lParam;
         SDL_SendSysWMEvent(&wmmsg);
     }
 

src/video/win32/SDL_win32window.c

@@ -549,7 +549,7 @@ WIN_GetWindowWMInfo(_THIS, SDL_Window * window, SDL_SysWMinfo * info)
     HWND hwnd = ((SDL_WindowData *) window->driverdata)->hwnd;
     if (info->version.major <= SDL_MAJOR_VERSION) {
         info->subsystem = SDL_SYSWM_WINDOWS;
-        info->win.window = hwnd;
+        info->info.win.window = hwnd;
         return SDL_TRUE;
     } else {
         SDL_SetError("Application not compiled with SDL %d.%d\n",

src/video/x11/SDL_x11events.c

@@ -91,7 +91,7 @@ X11_DispatchEvent(_THIS)
 
         SDL_VERSION(&wmmsg.version);
         wmmsg.subsystem = SDL_SYSWM_X11;
-        wmmsg.x11.event = xevent;
+        wmmsg.msg.x11.event = xevent;
         SDL_SendSysWMEvent(&wmmsg);
     }
 

src/video/x11/SDL_x11window.c

@@ -1137,8 +1137,8 @@ X11_GetWindowWMInfo(_THIS, SDL_Window * window, SDL_SysWMinfo * info)
     if (info->version.major == SDL_MAJOR_VERSION &&
         info->version.minor == SDL_MINOR_VERSION) {
         info->subsystem = SDL_SYSWM_X11;
-        info->x11.display = display;
+        info->info.x11.display = display;
-        info->x11.window = data->xwindow;
+        info->info.x11.window = data->xwindow;
         return SDL_TRUE;
     } else {
         SDL_SetError("Application not compiled with SDL %d.%d\n",