C++ 如何通知父对话框按钮关闭消息
我想对CButton进行子类化,以处理ON_WM_LBUTTONDOWN消息 DownButton.cpp:C++ 如何通知父对话框按钮关闭消息,c++,mfc,subclassing,C++,Mfc,Subclassing,我想对CButton进行子类化,以处理ON_WM_LBUTTONDOWN消息 DownButton.cpp: #include "stdafx.h" #include "DownButton.h" //CDownButton IMPLEMENT_DYNAMIC(CDownButton, CButton) CDownButton::CDownButton() { } CDownButton::~CDownButton() { } BEGIN_MESSAGE_MAP(
#include "stdafx.h"
#include "DownButton.h"
//CDownButton
IMPLEMENT_DYNAMIC(CDownButton, CButton)
CDownButton::CDownButton()
{
}
CDownButton::~CDownButton()
{
}
BEGIN_MESSAGE_MAP(CDownButton, CButton)
ON_WM_LBUTTONDOWN()
END_MESSAGE_MAP()
// CDownButton message handlers
void CDownButton::OnLButtonDown(UINT nFlags, CPoint point)
{
}
下载按钮
#pragma once
// CDownButton
class CDownButton : public CButton
{
DECLARE_DYNAMIC(CDownButton)
public:
CDownButton();
virtual ~CDownButton();
protected:
DECLARE_MESSAGE_MAP()
public:
afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
};
但是,如何通知包含此按钮的对话框发生这种情况?它似乎只能在单击时收到消息。您需要在OnLButtonDown事件中将消息重新发送给家长:
void CDownButton::OnLButtonDown(UINT nFlags, CPoint point)
{
// do what you want to do ...
GetParent()->SendMessage(WM_COMMAND, GetDlgCtrlID() | WM_LBUTTONDOWN << 16, (LONG) GetSafeHwnd());
}
void CDownButton::OnLButtonDown(UINT nFlags,CPoint point)
{
//做你想做的事。。。
GetParent()->SendMessage(WM_命令,GetDlgCtrlID()| WM_LBUTTONDOWN我已经多年没有使用MFC了,但我认为父窗口可以直接接收其子窗口中事件的通知,我应该在_命令(ID_按钮和Dialog::function)上添加
在对话框的BEGIN\u MESSAGE\u MAP
中,但是如何使用WM\u LBUTTONDOWN?