鼠标按下时执行一个操作，up时执行一个操作，鼠标在不同按钮上down/up执行的操作不同

[ningyf]

1、如何判断鼠标在那个按钮上down/up？
2、用BN_CLICKED不符合要求，触发的操作该写在什么地方？

[思危]

从CButton派生一个,或子类化你需要响应的按钮

[handwolf]

从CButton派生一个,然后影射
OnLButtonDown(UINT nFlags, CPoint point)

OnLButtonUp(UINT nFlags, CPoint point)

针对每个按纽都要新建这么一个继承类

[vcmute]

PreTranslateMessage也可

[handwolf]

给你一种解决办法，可以不用＂针对每个按纽都要新建这么一个继承类＂


//MyButton.h

class CMyButton : public CButton
{
// Construction
public:
// Attributes
int m_iMsBtnState;//1--Left mouse button up,2--Left mouse button down

protected:
afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
}


//MyButton.cpp

BEGIN_MESSAGE_MAP(CMyButton, CButton)
//{{AFX_MSG_MAP(CMyButton)
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CMyButton::OnLButtonDown(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default m_iMsBtnState = 1;
　　　　//发送消息，已实现不同ＩＤ的按纽处理不用的事情
GetParent()->SendMessage(WM_COMMAND, MAKELPARAM(GetDlgCtrlID(),BN_CLICKED),(LPARAM)GetSafeHwnd());
m_iMsBtnState = 0;
CButton::OnLButtonDown(nFlags, point);
}

void CMyButton::OnLButtonUp(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
//发送消息，已实现不同ＩＤ的按纽处理不用的事情
　　　　　m_iMsBtnState = ２;
GetParent()->SendMessage(WM_COMMAND, MAKELPARAM(GetDlgCtrlID(),BN_CLICKED),(LPARAM)GetSafeHwnd());
m_iMsBtnState = ０;
CButton::OnLButtonUp(nFlags, point);
}

然后在应用的时候，如下：
#include "MyButton.h"

class CAboutDlg : public CDialog
{
public:
CAboutDlg();
protected:
//{{AFX_DATA(CAboutDlg)
enum { IDD = IDD_ABOUTBOX };
CMyButton m_ctrlBtn1;
CMyButton m_ctrlBtn2;
//}}AFX_DATA

afx_msg void OnMybutton1();
afx_msg void OnMybutton2();
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
//{{AFX_MSG_MAP(CAboutDlg)
ON_COMMAND(ID_MYBUTTON1, OnMybutton1)
ON_COMMAND(ID_MYBUTTON2, OnMybutton2)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CAboutDlg::OnMybutton1()
{
// TODO: Add your control notification handler code here
if(m_ctrlBtn1.m_iMsBtnState == 1){
...
}
else if(m_ctrlBtn1.m_iMsBtnState == 2){
...
}

}
void CAboutDlg::OnMybutton2()
{
// TODO: Add your control notification handler code here
if(m_ctrlBtn2.m_iMsBtnState == 1){
...
}
else if(m_ctrlBtn2.m_iMsBtnState == 2){
...
}

}

[ningyf]

GetParent()->SendMessage(WM_COMMAND, MAKELPARAM(GetDlgCtrlID(),BN_CLICKED),(LPARAM)GetSafeHwnd());
这句编译不过

[handwolf]

什么错误？

另外，你要理解这个程序的主要思想！
程序是继承一个CButton类，然后为了“实现不同ＩＤ的按纽处理不同的事”，需要要送一个消息给对应的ID按纽，然后通过按纽对象的状态来判断是否是左键按下/弹起。