如何禁用CListCtrl选择选项 [英] How to disable the CListCtrl select option
问题描述
我不知道如何禁用CListCtrl选择选项。我想重写CListCtrl类方法或处理任何窗口命令?谢谢。
如果您要停止用户在 CListCtrl
,你需要从 CListCtrl
派生自己的类,并为 LVN_ITEMCHANGING
通知添加一个消息处理程序。 / p>
因此,示例类 CMyListCtrl
会有一个头文件:
MyListCtrl.h
#pragma once
class CMyListCtrl:public CListCtrl
{
DECLARE_DYNAMIC(CMyListCtrl)
protected:
DECLARE_MESSAGE_MAP()
public:
// LVN_ITEMCHANGING通知处理程序
afx_msg void OnLvnItemchanging(NMHDR * pNMHDR,LRESULT * pResult);
};
然后MyListCtrl.cpp:
#includeMyListCtrl.h
IMPLEMENT_DYNAMIC(CMyListCtrl,CListCtrl)
BEGIN_MESSAGE_MAP(CMyListCtrl,CListCtrl)
ON_NOTIFY_REFLECT LVN_ITEMCHANGING,& CMyListCtrl :: OnLvnItemchanging)
END_MESSAGE_MAP()
void CMyListCtrl :: OnLvnItemchanging(NMHDR * pNMHDR,LRESULT * pResult)
{
// LVN_ITEMCHANGING通知处理程序
LPNMLISTVIEW pNMLV = reinterpret_cast< LPNMLISTVIEW>(pNMHDR);
//是用户选择项目吗?
if((pNMLV-> uChanged& LVIF_STATE)&&(pNMLV-> uNewState& LVNI_SELECTED))
{
// yes - b $ b * pResult = 1;
}
else
{
//否 - 允许任何其他更改
* pResult = 0;
}
}
因此,您可以添加一个普通 CListCtrl
到一个对话框,然后为它创建一个成员变量(默认为 CListCtrl
),然后编辑对话框的头文件到 #includeMyListCtrl.h
并将列表控制成员变量从 CListCtrl
更改为 CMyListCtrl
。
I don't know how to disable the CListCtrl select option. I want to override the CListCtrl class method or handle any window command ? Thanks.
If you want to stop the user selecting an item in a CListCtrl
, you need to derive your own class from CListCtrl
and add a message handler for the LVN_ITEMCHANGING
notification.
So, an example class CMyListCtrl
would have a header file:
MyListCtrl.h
#pragma once
class CMyListCtrl : public CListCtrl
{
DECLARE_DYNAMIC(CMyListCtrl)
protected:
DECLARE_MESSAGE_MAP()
public:
// LVN_ITEMCHANGING notification handler
afx_msg void OnLvnItemchanging(NMHDR *pNMHDR, LRESULT *pResult);
};
And then MyListCtrl.cpp:
#include "MyListCtrl.h"
IMPLEMENT_DYNAMIC(CMyListCtrl, CListCtrl)
BEGIN_MESSAGE_MAP(CMyListCtrl, CListCtrl)
ON_NOTIFY_REFLECT(LVN_ITEMCHANGING, &CMyListCtrl::OnLvnItemchanging)
END_MESSAGE_MAP()
void CMyListCtrl::OnLvnItemchanging(NMHDR *pNMHDR, LRESULT *pResult)
{
// LVN_ITEMCHANGING notification handler
LPNMLISTVIEW pNMLV = reinterpret_cast<LPNMLISTVIEW>(pNMHDR);
// is the user selecting an item?
if ((pNMLV->uChanged & LVIF_STATE) && (pNMLV->uNewState & LVNI_SELECTED))
{
// yes - never allow a selected item
*pResult = 1;
}
else
{
// no - allow any other change
*pResult = 0;
}
}
So you can, for example, add a normal CListCtrl
to a dialog, then create a member variable for it (by default it will be CListCtrl
) then edit your dialog's header file to #include "MyListCtrl.h
and change the list control member variable from CListCtrl
to CMyListCtrl
.
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