X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/cff48ba847a27ba4fb3402f4542d40251c5a7a27..357f4c818d25cd63efc90363cc48d79c76f2faf1:/src/generic/listctrl.cpp

diff --git a/src/generic/listctrl.cpp b/src/generic/listctrl.cpp
index 1a82b85138..5a3ef5ac90 100644
--- a/src/generic/listctrl.cpp
+++ b/src/generic/listctrl.cpp
@@ -5061,12 +5061,22 @@ bool wxGenericListCtrl::DoPopupMenu( wxMenu *menu, int x, int y )
 
 void wxGenericListCtrl::DoClientToScreen( int *x, int *y ) const
 {
-    m_mainWin->DoClientToScreen(x, y);
+    // It's not clear whether this can be called before m_mainWin is created
+    // but it seems better to be on the safe side and check.
+    if ( m_mainWin )
+        m_mainWin->DoClientToScreen(x, y);
+    else
+        wxControl::DoClientToScreen(x, y);
 }
 
 void wxGenericListCtrl::DoScreenToClient( int *x, int *y ) const
 {
-    m_mainWin->DoScreenToClient(x, y);
+    // At least in wxGTK/Univ build this method can be called before m_mainWin
+    // is created so avoid crashes in this case.
+    if ( m_mainWin )
+        m_mainWin->DoScreenToClient(x, y);
+    else
+        wxControl::DoScreenToClient(x, y);
 }
 
 void wxGenericListCtrl::SetFocus()