--- ../src/include/winuser.h	2010-01-24 05:32:26.000000000 +0100
+++ include/winuser.h	2010-04-23 18:19:50.000000000 +0200
@@ -420,6 +420,10 @@
 LONG WINAPI	SetWindowLong(HWND hwnd, int nIndex, LONG lNewLong);
 WORD WINAPI	GetWindowWord(HWND hwnd, int nIndex);
 WORD WINAPI	SetWindowWord(HWND hwnd, int nIndex, WORD wNewWord);
+BOOL WINAPI SetProp(HWND hWnd, LPCSTR lpString, HANDLE hData);
+HANDLE WINAPI GetProp(HWND hWnd, LPCSTR lpString);
+HANDLE WINAPI RemoveProp(HWND hWnd, LPCSTR lpString);
+
 #define GetDlgCtrlID(hwnd)	((int)(hwnd)->id)
 DWORD WINAPI	GetClassLong(HWND hwnd, int nIndex);
 int WINAPI	GetWindowTextLength(HWND hwnd);