(Fwindow_at): Take account of FRAME_INTERNAL_BORDER_WIDTH.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/window.c b/src/window.c
index 5aafd8a741a..409d0972fdd 100644
--- a/src/window.c
+++ b/src/window.c
@@ -938,8 +938,10 @@ column 0.  */)
   CHECK_NUMBER_OR_FLOAT (y);
 
   return window_from_coordinates (f,
-                                  FRAME_PIXEL_X_FROM_CANON_X (f, x),
-                                  FRAME_PIXEL_Y_FROM_CANON_Y (f, y),
+                                  (FRAME_PIXEL_X_FROM_CANON_X (f, x)
+                                   + FRAME_INTERNAL_BORDER_WIDTH (f)),
+                                  (FRAME_PIXEL_Y_FROM_CANON_Y (f, y)
+                                   + FRAME_INTERNAL_BORDER_WIDTH (f)),
                                   0, 0, 0, 0);
 }