+// returns the wxWindow corresponding to the given HWND or NULL.
+WXDLLEXPORT extern wxWindow *wxGetWindowFromHWND(WXHWND hwnd);
+
+// Get the size of an icon
+WXDLLEXPORT extern wxSize wxGetHiconSize(HICON hicon);
+
+// Lines are drawn differently for WinCE and regular WIN32
+WXDLLEXPORT void wxDrawLine(HDC hdc, int x1, int y1, int x2, int y2);
+
+// ----------------------------------------------------------------------------
+// 32/64 bit helpers
+// ----------------------------------------------------------------------------
+
+#ifdef __WIN64__
+
+inline void *wxGetWindowProc(HWND hwnd)
+{
+ return (void *)::GetWindowLongPtr(hwnd, GWLP_WNDPROC);
+}
+
+inline void *wxGetWindowUserData(HWND hwnd)
+{
+ return (void *)::GetWindowLongPtr(hwnd, GWLP_USERDATA);
+}
+
+inline WNDPROC wxSetWindowProc(HWND hwnd, WNDPROC func)
+{
+ return (WNDPROC)::SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR)func);
+}
+
+inline void *wxSetWindowUserData(HWND hwnd, void *data)
+{
+ return (void *)::SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)data);
+}
+
+#else // __WIN32__
+
+#ifdef __VISUALC__
+ // strangely enough, VC++ 7.1 gives warnings about 32 -> 64 bit conversions
+ // in the functions below, even in spite of the explicit casts
+ #pragma warning(disable:4311)
+ #pragma warning(disable:4312)
+#endif
+
+inline void *wxGetWindowProc(HWND hwnd)
+{
+ return (void *)::GetWindowLong(hwnd, GWL_WNDPROC);
+}
+
+inline void *wxGetWindowUserData(HWND hwnd)
+{
+ return (void *)::GetWindowLong(hwnd, GWL_USERDATA);
+}
+
+inline WNDPROC wxSetWindowProc(HWND hwnd, WNDPROC func)
+{
+ return (WNDPROC)::SetWindowLong(hwnd, GWL_WNDPROC, (LONG)func);
+}
+
+inline void *wxSetWindowUserData(HWND hwnd, void *data)
+{
+ return (void *)::SetWindowLong(hwnd, GWL_USERDATA, (LONG)data);
+}
+
+#ifdef __VISUALC__
+ #pragma warning(default:4311)
+ #pragma warning(default:4312)
+#endif
+
+#endif // __WIN64__/__WIN32__