C++ console with timer instance code

This paper mainly studies the relevant instances of C++ console timer, which are as follows.

Use of Timer in the MFC program

There is a good timer function in MFC.

Use SetTimer() to set the timer Use KillTimer() to turn off the timer In the OnTimer() function, the response to the message WM_TIMER is the timer handler.

The source code

#define TIMER_UDP_QFX 3// The timer ID
int Period = 1000;//1000ms The timer 
// Set up the 1 A timer 
SetTimer(TIMER_UDP_QFX, Period, NULL);

// Set your own processing code in the timer handler function 
void CFlightMissionPage::OnTimer(UINT_PTR nIDEvent)
{
  //UPD  Update the interface 
  if (TIMER_UDP_QFX == nIDEvent)
  {// If the timer ID is  TIMER_UDP_QFX  , to be processed 
   // ·. · 
   // Handling code 
   // ·. · 
  }
}
// Turn off the timer when you don't need it 
KillTimer(TIMER_UDP_QFX);

Use of Timer in console programs

This feature can help us do a lot of things without being too harsh on real-time metrics. So the question is, can this be used in general console applications? The answer, of course, is yes.

The function you want to use

UINT_PTR SetTimer( HWND hWnd,       // handle to window
 UINT_PTR nIDEvent,   // timer identifier
 UINT uElapse,      // time-out value
 TIMERPROC lpTimerFunc  // timer procedure
 );

VOID CALLBACK TimerProc(
 HWND hwnd,     // handle to window
 UINT uMsg,     // WM_TIMER message
 UINT_PTR idEvent, // timer identifier
 DWORD dwTime    // current system time
);

The source code

#include <Windows.h>

// Console message response 
void CALLBACK TimerProc(HWND hwnd, UINT uMsg, UINT idEvent, DWORD dwTime)
{
  if(1 == idEvent)
  {// If it's a timer 1
    ::MessageBeep(0);//Beep call 
  }

}

int main()
{

  int TimerID = 1;//Timer the ID is 1
  int peried = 1000;//Timer The interval is  1000ms

  // Set up the Timer  
  ::SetTimer(NULL, TimerID, peried, &TimerProc);

  ::MSG msg;
  while(::GetMessage(&msg, NULL, 0, 0))
  {
    ::DispatchMessage(&msg);
  }
}

conclusion

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