ensure that wxToolBar has one of wxTB_TOP/LEFT/RIGHT/BOTTOM styles set, otherwise the latest toolbar positioning code breaks down

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42840 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/tbarbase.h

@@ -564,6 +564,13 @@ protected:
     // helper functions
     // ----------------
 
+    // call this from derived class ctor/Create() to ensure that we have either
+    // wxTB_HORIZONTAL or wxTB_VERTICAL style, there is a lot of existing code
+    // which randomly checks either one or the other of them and gets confused
+    // if neither is set (and making one of them 0 is not an option neither as
+    // then the existing tests would break down)
+    void FixupStyle();
+
     // un-toggle all buttons in the same radio group
     void UnToggleRadioGroup(wxToolBarToolBase *tool);