* xterm.c (XTread_socket): For ConfigureNotify, with x and y == 0,

and USE_MOTIF, call XTranslateCoordinates to get the real x and y.
This is to also handle x/y changes that occur because of a resize.

1 files changed, 18 insertions, 2 deletions

diff --git a/src/xterm.c b/src/xterm.c
index 731f94e7e44..e457d6e4519 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -11179,8 +11179,24 @@ XTread_socket (sd, bufp, numchars, expected)
                      in the emacs widget, which messes up Motif menus.  */
                   if (event.xconfigure.x == 0 && event.xconfigure.y == 0)
                     {
-                      event.xconfigure.x = f->output_data.x->widget->core.x;
-                      event.xconfigure.y = f->output_data.x->widget->core.y;
+                      Window child;
+                      int count;
+
+                      /* We can get a ConfigureNotify because of a resize,
+                         so we can't just take x and y from the widget.
+                         Since this event may come on something else than
+                         the top level window,  we can't use x_real_position
+                         either.  So we get the root window x/y for 0/0 in
+                         the window in the event. */
+                      count = x_catch_errors (FRAME_X_DISPLAY (f));
+                      XTranslateCoordinates (FRAME_X_DISPLAY (f),
+                                             event.xconfigure.window,
+                                             FRAME_X_DISPLAY_INFO (f)->root_window,
+                                             0, 0,
+                                             &event.xconfigure.x,
+                                             &event.xconfigure.y,
+                                             &child);
+                      x_uncatch_errors (FRAME_X_DISPLAY (f), count);
                     }
 #endif /* USE_MOTIF */
                 }