Why does the exit button always give an error?

garylee001

I wrote a small program for phone billing with MFC. There is only one dialog box. The program compiles and links are fine. The runtime is normal, and the content in the Access database is correct, but it always reports an error when exiting:
              Debug Assertion Failed!
        Programme: ..... (path name)
        File: afx.inl
        Line: 122
Here is the code for the exit button:
void CFeeCountingDlg :: OnButton1out ()
{
// Judge the button status
         if (Begin_Button_State! = FALSE&&Finish_Button_State == FALSE)
{
KillTimer (0); // end the clock
CDialog :: OnCancel (); // Quit (it is an error when debugging this sentence)
}
else
MessageBox ("Calling ...");
// TODO: Add your control notification handler code here
Ranch
}

175545733

Change the total exit method, if it is modal, use EndDialog

food0012

What is the specific assertion of the error, make it clear

2511718

Comment out CDialog :: OnTimer in OnTimer

wqkbosss

Unable to answer, more detailed points from the landlord!