CTreeCtrl的TVN_ITEMEXPANDING消息接受不到
m_pTreeCtrl->Create(TVS_HASBUTTONS |
TVS_HASLINES | TVS_LINESATROOT | TVS_FULLROWSELECT |
WS_TABSTOP|WS_CHILD|WS_VISIBLE|TVS_SINGLEEXPAND ,
CRect(0,0,20,20),
this,IDC_DROP_TREE);
ON_NOTIFY(TVN_ITEMEXPANDING, IDC_DROP_TREE, OnItemexpandingTreeDocuments)
自己创建的树不能接受到TVN_ITEMEXPANDING消息,放控件就可以不知道为什么?