winemac: Directly use win32u for user functions in window.c.

dlls/winemac.drv/macdrv.h

@@ -302,6 +302,16 @@ static inline LRESULT send_message(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lp
     return NtUserMessageCall(hwnd, msg, wparam, lparam, NULL, NtUserSendMessage, FALSE);
 }
 
+static inline LRESULT send_message_timeout(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam,
+                                           UINT flags, UINT timeout, PDWORD_PTR res_ptr)
+{
+    struct send_message_timeout_params params = { .flags = flags, .timeout = timeout };
+    LRESULT res = NtUserMessageCall(hwnd, msg, wparam, lparam, &params,
+                                    NtUserSendMessageTimeout, FALSE);
+    if (res_ptr) *res_ptr = params.result;
+    return res;
+}
+
 static inline HWND get_active_window(void)
 {
     GUITHREADINFO info;
@@ -316,6 +326,22 @@ static inline HWND get_capture(void)
     return NtUserGetGUIThreadInfo(GetCurrentThreadId(), &info) ? info.hwndCapture : 0;
 }
 
+static inline HWND get_focus(void)
+{
+    GUITHREADINFO info;
+    info.cbSize = sizeof(info);
+    return NtUserGetGUIThreadInfo(GetCurrentThreadId(), &info) ? info.hwndFocus : 0;
+}
+
+static inline BOOL intersect_rect( RECT *dst, const RECT *src1, const RECT *src2 )
+{
+    dst->left   = max(src1->left, src2->left);
+    dst->top    = max(src1->top, src2->top);
+    dst->right  = min(src1->right, src2->right);
+    dst->bottom = min(src1->bottom, src2->bottom);
+    return !IsRectEmpty( dst );
+}
+
 /* registry helpers */
 
 extern HKEY open_hkcu_key( const char *name ) DECLSPEC_HIDDEN;