etc. and return it from GetItemCount to save so many calls to
ListView_GetItemCount.
2. If EVT_LIST_DELETE_ALL_ITEMS was not handled then the
post-processing code to prevent LVN_DELETEITEM messages was not
getting executed. Changed it so the post processing always
happens.
3. It's possible with some versions of comctl32 that garbage values
can be passed in nmLV->lParam so don't try to get the internal item
data pointer from it. This should close bug# 659939
4. Added FreeAllInternalData from DeleteAllItems, (part of patch
#672065) and also guard against processing LVN_CHANG* messages
while freeing the internal data.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@19021 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
68c124a168