The MFC button controls whether the editing box displays the system time (Dynamic Display), and the mfc Display System

The MFC button controls whether the editing box displays the system time (Dynamic Display), and the mfc Display System

1. public in dlg. h

Bool flag;

Static UINT time (void * param );

2. In the constructor

Flag = false;

3. In the button generation function

If (flag)
{
Flag = false;
// GetDlgItem (IDC_ShowTime)-> SetWindowTextW (_ T (""));
/* M_showtime.SetWindowText (_ T (""));
M_showtime.SetFocus ();*/
// UpdateData (true );
CEdit * pedt = (CEdit *) GetDlgItem (IDC_ShowTime );
Pedt-> SetWindowText (_ T (""); // The editing box cannot be cleared, or cleared and restored.

// I don't know what's going on. If anyone knows, please let me know.
}
Else
{
AfxBeginThread (time, this); //, THREAD_PRIORITY_IDLE );

Flag = true;

}

4.

UINT CmyDlg: time (void * param)
{
CmyDlg * dlg = (CmyDlg *) param;
CEdit * incluimebox = (CEdit *) dlg-> GetDlgItem (IDC_ShowTime); // IDC_ShowTime is the edit box ID.
CString str;
While (dlg-> flag)
{
Sleep (1000 );
CTime time = CTime: GetCurrentTime ();
Str = time. Format (_ T ("% Y-% m-% d % H: % M: % S % "));
SysTimeBox-> SetWindowTextW (str );
}
Return 0;
}

The MFC editing box outputs the current system time.

CTime tm = CTime: GetCurrentTime ();
CString str1 = tm. Format ("% Y-% m-% d % H: % M: % S ");
SetDlgItemText (IDC_EDIT, str1); // IDC_EDIT is the ID of the edit box.

If you want to beat it, you can add a timer message response function.
Put the code in the timer message Response Function
Scheduled in the initialization dialog box
SetTimer (1, 1000, NULL); // The timer value is 1 s, and it will be as beat as a table

Can the content in the edit box of MFC be dynamically updated? I used the edit box control to display the system time. What should I do if I want it to automatically update as time changes?

Enable the Timer: SetTimer );
ClassWizard implements the OnTimer function in the dialog box and writes the following information to it:
If (1 = nIDEvent)
{
// Your above code
UpdateData (FALSE );

}