Make the union nameless to reduce the complexity of the API.

(Are there any compilers still in use that don't support this?)

include/SDL_syswm.h

@@ -133,7 +133,7 @@ struct SDL_SysWMmsg
             /* No Cocoa window events yet */
         } cocoa;
 #endif
-    } msg;
+    } /*msg*/;
 };
 
 /**
@@ -175,7 +175,7 @@ struct SDL_SysWMinfo
             NSWindow *window;
         } cocoa;
 #endif
-    } info;
+    } /*info*/;
 };
 
 #endif /* SDL_PROTOTYPES_ONLY */

src/video/cocoa/SDL_cocoawindow.m

@@ -708,7 +708,7 @@ - (BOOL)canBecomeMainWindow
 
     if (info->version.major <= SDL_MAJOR_VERSION) {
         info->subsystem = SDL_SYSWM_COCOA;
-        info->info.cocoa.window = nswindow;
+        info->cocoa.window = nswindow;
         return SDL_TRUE;
     } else {
         SDL_SetError("Application not compiled with SDL %d.%d\n",

src/video/win32/SDL_win32events.c

@@ -114,10 +114,10 @@ WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
 
         SDL_VERSION(&wmmsg.version);
         wmmsg.subsystem = SDL_SYSWM_WINDOWS;
-        wmmsg.msg.win.hwnd = hwnd;
-        wmmsg.msg.win.msg = msg;
-        wmmsg.msg.win.wParam = wParam;
-        wmmsg.msg.win.lParam = lParam;
+        wmmsg.win.hwnd = hwnd;
+        wmmsg.win.msg = msg;
+        wmmsg.win.wParam = wParam;
+        wmmsg.win.lParam = lParam;
         SDL_SendSysWMEvent(&wmmsg);
     }
 

src/video/win32/SDL_win32window.c

@@ -552,7 +552,7 @@ 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->info.win.window = hwnd;
+        info->win.window = hwnd;
         return SDL_TRUE;
     } else {
         SDL_SetError("Application not compiled with SDL %d.%d\n",

src/video/x11/SDL_x11events.c

@@ -90,7 +90,7 @@ X11_DispatchEvent(_THIS)
 
         SDL_VERSION(&wmmsg.version);
         wmmsg.subsystem = SDL_SYSWM_X11;
-        wmmsg.msg.x11.event = xevent;
+        wmmsg.x11.event = xevent;
         SDL_SendSysWMEvent(&wmmsg);
     }
 

src/video/x11/SDL_x11window.c

@@ -1125,8 +1125,8 @@ 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->info.x11.display = display;
-        info->info.x11.window = data->xwindow;
+        info->x11.display = display;
+        info->x11.window = data->xwindow;
         return SDL_TRUE;
     } else {
         SDL_SetError("Application not compiled with SDL %d.%d\n",