On Mac the first visible line needs to be recalculated after the Scroll because it...

to the wrong value in Scroll because of the paint event generated by the Update() there.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@49094 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/generic/listctrl.cpp b/src/generic/listctrl.cpp
index 4e49115d1a7400e69aebe2b5875451f987a1f6d5..b316c39ea9b3a34cc5007d14195d60178d3cc121 100644 (file)
--- a/src/generic/listctrl.cpp
+++ b/src/generic/listctrl.cpp
@@ -3296,6 +3296,17 @@ void wxListMainWindow::MoveToItem(size_t item)
             Scroll( -1, rect.y / hLine );
         if (rect.y + rect.height + 5 > view_y + client_h)
             Scroll( -1, (rect.y + rect.height - client_h + hLine) / hLine );
+
+#ifdef __WXMAC__
+        // At least on Mac the visible lines value will get reset inside of
+        // Scroll *before* it actually scrolls the window because of the
+        // Update() that happens there, so it will still have the wrong value.
+        // So let's reset it again and wait for it to be recalculated in the
+        // next paint event.  I would expect this problem to show up in wxGTK
+        // too but couldn't duplicate it there.  Perhaps the order of events
+        // is different...  --Robin
+        ResetVisibleLinesRange();
+#endif
     }
     else // !report
     {