正常退出应用程序 [英] To exit the application gracefully

问题描述

大家好..

在某些情况下感到震惊，让我解释一下..我的代码段代码如下所示.

//CSampleDlg.cpp

Hi All..

Am struck up in certain situation, Let me explain this.. My snippet code looks like this.

//CSampleDlg.cpp

void CALLBACK EXPORT MyTimerProc(HWND hWnd,UINT nMsg,UINT nIDEvent,DWORD dwTime)
{
   // Task 1: Am reading the values SellA,BuyB & SellB,BuyA.
   
   //Task 2: 
   if( SellA >= BuyB)
   {
      //Do Other Stuff: Open_Position() operation
   }

   if( SellB >= BuyA )
   {
      //Do other stuff: Close_Position() Operation
   }

}

我必须连续运行MyTimerProc函数.某些小时后，我必须退出该函数.

I have to run MyTimerProc function continuously.After certain hours i have to quit that function.

UINT m_timer;
void CSampleDlg::OnOK()
{
//For Every 2seconds, MyTimerProc will run continously.
 m_timer=SetTimer(1, 2000, (TIMERPROC)MyTimerProc);
}

void CSampleDlg::OnCancel()
{
//To Terminate the MyTimerProc function
KillTimer(m_timer);
}

当我单击取消按钮时，无论如何MyTimerProc函数将退出.但我的担心是..当我单击取消"按钮&时，控件位于Open_Position()或Close_Position()之类的中间操作中.在这种情况下，Open_Position()或Close_Operation()将会失败&应用程序不会正常退出.

当用户点击取消"按钮&如果MyTimerProc函数正在执行Open_Position()/Close_position()，那么我可以得到任何通知还是像警报一样.
请给我建议..

谢谢大家.

When i click on cancel button, Anyhow MyTimerProc function will quit. But My fear is.. When i click on cancel button & control is in the middle operation like Open_Position() OR Close_Position(). In such case, Open_Position() OR Close_Operation() will fail & application will not exit gracefully.

Is it possible, when user clicks on cancel button & if MyTimerProc function is doing Open_Position()/Close_position(), then can i get the any notifiction or just like alarm..
Please suggest me on this..

Thank you all.

推荐答案

如果您的计时器工作仅与对话框有关-
只需将NULL作为第三个参数传递给SetTimer(..)
然后让对话框在WM_TIMER上为您的事件ID做出反应:)

另请注意
取消对话
不是离开它的唯一方法
(您可以在WM_DESTROY上的反应中杀死(创建的)计时器):)

If your timer''s job related to the dialog only -
just pass NULL as third parameter to the SetTimer(..)
and then let the dialog react on WM_TIMER for your event ID :)

Please note also
that the cancelling of a dialog
is not the single way to leave it
(you could kill the (created) timer in the reaction on WM_DESTROY) :)

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