Insert() patch from John Labenski

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@20564 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/motif/combobox_native.cpp

@@ -197,6 +197,22 @@ int wxComboBox::DoAppend(const wxString& item)
     return GetCount() - 1;
 }
 
+int wxComboBox::DoInsert(const wxString& item, int pos)
+{
+    wxCHECK_MSG(!(GetWindowStyle() & wxCB_SORT), -1, wxT("can't insert into sorted list"));
+    wxCHECK_MSG((pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));
+
+    if (pos == GetCount())
+        return DoAppend(item);
+
+    wxXmString str( item.c_str() );
+    XmComboBoxAddItem((Widget) m_mainWidget, str(), pos+1, False);
+    m_noStrings ++;
+    AdjustDropDownListSize();
+
+    return GetCount() - 1;
+}
+
 void wxComboBox::Delete(int n)
 {
 #ifdef LESSTIF_VERSION