Use wxListColumnFormat for wxListCtrl::AppendColumn() format argument.

This is safer than using just an untyped int.

Closes #15265.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74310 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/listbase.h

@@ -415,7 +415,7 @@ public:
     //
     // Returns the index of the newly inserted column or -1 on error.
     long AppendColumn(const wxString& heading,
-                      int format = wxLIST_FORMAT_LEFT,
+                      wxListColumnFormat format = wxLIST_FORMAT_LEFT,
                       int width = -1);
 
     // Add a new column to the control at the position "col".

interface/wx/listctrl.h

@@ -324,7 +324,7 @@ public:
         @since 2.9.4
      */
     long AppendColumn(const wxString& heading,
-                      int format = wxLIST_FORMAT_LEFT,
+                      wxListColumnFormat format = wxLIST_FORMAT_LEFT,
                       int width = -1);
 
     /**

src/common/listctrlcmn.cpp

@@ -138,7 +138,7 @@ IMPLEMENT_DYNAMIC_CLASS(wxListEvent, wxNotifyEvent)
 
 long
 wxListCtrlBase::AppendColumn(const wxString& heading,
-                             int format,
+                             wxListColumnFormat format,
                              int width)
 {
     return InsertColumn(GetColumnCount(), heading, format, width);