Restore wine access after program loses and regains focus.

review_x11.h

@@ -5,3 +5,10 @@
 // Query Wine's actual X11 window, not a title/geometry search. Origin translates
 // desktop-local Win32 positions to physical root coordinates in virtual mode.
 bool review_x11_geometry(HWND window, RECT &bounds, POINT &origin);
+
+// True only when both the window manager and X11 focus select this prefix's
+// virtual desktop itself, rather than another application or desktop child.
+bool wine_x11_desktop_focused();
+
+// Deliver native focus to the application's actual child of this desktop.
+bool wine_x11_restore_focus(HWND window);