user32: Add a stub implementation of IsTouchWindow.

dlls/user32/misc.c

@@ -727,7 +727,16 @@ BOOL WINAPI SetGestureConfig( HWND hwnd, DWORD reserved, UINT id, PGESTURECONFIG
 {
     FIXME("(%p %08x %u %p %u): stub\n", hwnd, reserved, id, config, size);
     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
-    return 0;
+    return FALSE;
+}
+
+/**********************************************************************
+ * IsTouchWindow [USER32.@]
+ */
+BOOL WINAPI IsTouchWindow( HWND hwnd, PULONG flags )
+{
+    FIXME("(%p %p): stub\n", hwnd, flags);
+    return FALSE;
 }
 
 static const WCHAR imeW[] = {'I','M','E',0};

dlls/user32/user32.spec

@@ -445,6 +445,7 @@
 @ stdcall IsMenu(long)
 @ stdcall IsRectEmpty(ptr)
 # @ stub IsServerSideWindow
+@ stdcall IsTouchWindow(long ptr)
 @ stdcall IsWinEventHookInstalled(long)
 @ stdcall IsWindow(long)
 @ stdcall IsWindowEnabled(long)

include/winuser.h

@@ -3735,6 +3735,7 @@ WINUSERAPI BOOL        WINAPI IsHungAppWindow(HWND);
 WINUSERAPI BOOL        WINAPI IsIconic(HWND);
 WINUSERAPI BOOL        WINAPI IsMenu(HMENU);
 WINUSERAPI BOOL        WINAPI IsRectEmpty(const RECT*);
+WINUSERAPI BOOL        WINAPI IsTouchWindow(HWND,PULONG);
 WINUSERAPI BOOL        WINAPI IsWinEventHookInstalled(DWORD);
 WINUSERAPI BOOL        WINAPI IsWindow(HWND);
 WINUSERAPI BOOL        WINAPI IsWindowEnabled(HWND);