How to use function "OnDeleteitem(NMHDR* pNMHDR, LRESULT* pResult) " on ctreectrl?

[Feng Qin]

as title I'm amumu, and you?

[Derek Waters]

Huh? Do you mean how to add a DeleteItem notification handler, or what to do when you get it? To add the notification, you need to add

afx_msg void OnDeleteTreeItem(NMHDR *pNMHDR, LRESULT *pResult);

to your header, then add:

ON_NOTIFY(TVN_DELETEITEM, IDC_MY_TREE_CTRL, OnDeleteTreeItem)

to your message map. Finally, add the handler to your .cpp file:

void CMyClass::OnDeleteTreeItem(NMHDR *pNMHDR, LRESULT *pResult)
{
NMTREEVIEW *pTreeNotify = (NMTREEVIEW *)pNMHDR;

// Now pTreeNotify->itemOld.hItem is the HTREEITEM of the deleted tree item
}

As to what you do in the handler, that's up to you... ------------------------ Derek Waters derek@lj-oz.com

[Feng Qin]

Thanks, I got it:) I'm amumu, and you?