The MFC dialog box customizes the method of message mapping

This article illustrates the MFC dialog box custom message mapping method. Share with you for your reference. The specific implementation method is as follows:

1. Define the message:

#define WM_MYMSG (WM_USER+100)

2. Define the message response function:

LPESULT CSLYARDlg::OnMymsg(WPARAM wParam, LPARAM lParam)
{
// TODO
return 0;
}

3. Declare the message response function in the AFX_MSG of the window header file:

// Generated message map functions
//{{AFX_MSG(CSLYARDlg)
virtual BOOL OnInitDialog();
afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
afx_msg void OnPaint();
afx_msg HCURSOR OnQueryDragIcon();
afx_msg LRESULT OnMymsg(WPARAM wParam, LPARAM lParam);
//}}AFX_MSG

4. Declare the message map in the MESSAGE_MAP of the window class implementation file, where the ON_MESSAGE macro is needed:

BEGIN_MESSAGE_MAP(CSLYARDlg, CDialog)
//{{AFX_MSG_MAP(CSLYARDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_MESSAGE(WM_MYMSG, OnMymsg)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

Hope that this article is helpful to everyone's MFC programming.