Ctreecontrl implementation in VC respond to a click or double-tap event

You first need to rewrite the Ctreecontrl and then add it in. h

afx_msg void Ondblclktree (nmhdr* pnmhdr, lresult* pResult);//double-click event
afx_msg void Onclktree (nmhdr* pnmhdr, lresult* PResult);//Click event

. h file

#pragma once

/////////////////////////////////////////////////////////////////////////////
//CViewTree Window

class Cviewtree:public CTreeCtrl
{
//Construction public
:
	cviewtree ();

Rewrite
protected:
	virtual BOOL onnotify (WPARAM WPARAM, LPARAM LPARAM, lresult* pResult);

Implement public
:
	virtual ~cviewtree ();
	afx_msg void Ondblclktree (nmhdr* pnmhdr, lresult* pResult);
	afx_msg void Onclktree (nmhdr* pnmhdr, lresult* pResult);

Protected:
	declare_message_map ()
};

. cpp Files

#include "stdafx.h" #include "ViewTree.h" #ifdef _DEBUG #define NEW debug_new #undef this_file static char this_file[] =
__file__; #endif///////////////////////////////////////////////////////////////////////////////CViewTree CViewTree:: Cviewtree () {} cviewtree::~cviewtree () {} begin_message_map (Cviewtree, CTreeCtrl) on_notify_reflect (NM_DBLCLK, &C Viewtree::ondblclktree) On_notify_reflect (Nm_click, &cviewtree::onclktree) end_message_map ()///////////////// Cviewtree Message Handler BOOL cviewtree::onnotify (WPARAM

	WParam, LPARAM LPARAM, lresult* pResult) {BOOL bRes = ctreectrl::onnotify (WParam, LPARAM, PResult);
	nmhdr* PNMHDR = (nmhdr*) LParam;

	ASSERT (Pnmhdr! = NULL); if (pnmhdr && pnmhdr->code = = Ttn_show && gettooltips ()! = NULL) {gettooltips ()->setwindowpos (&A Mp;wndtop,-1,-1,-1,-1, Swp_nomove | Swp_noactivate |
	Swp_nosize);
} return bRes; } void Cviewtree::ondblclktree (nmhdr* Pnmhdr, lresult* pResult) {Htreeitem Htreeitem = GetSelectedItem (); 
	Take the GetItemText () function as an example: CString S1 = GetItemText (Htreeitem);

	AfxMessageBox ("You have selected" +S1);

*presult = 0; 
	} void Cviewtree::onclktree (nmhdr* pnmhdr, lresult* pResult) {Htreeitem Htreeitem = GetSelectedItem (); 
	Take the GetItemText () function as an example: CString S1 = GetItemText (Htreeitem);

	AfxMessageBox ("You have selected" +S1);

*presult = 0; }

This enables Ctreecontrl click events and double-click events