VC中定时器设置

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于 2015-04-06 16:51:46 发布 · 1k 阅读

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#VC #定时器 #设置

本文简单介绍下VC中定时器设置。

首先，新建对话框应用程序，然后添加几个操作按钮。

定义相关变量

private:
	int m_nValue;

	DWORD m_dwTimeStarted;

	LARGE_INTEGER m_cupHZ;
	LARGE_INTEGER m_StartCount;

源文件

void CTimeCountDlg::OnTimer(UINT nIDEvent) 
{
	UpdateData(TRUE);

	switch(nIDEvent)
	{
	case 1:
		{
			m_nValue+=1000;
			m_sValue1.Format("%d",m_nValue);
		}
		break;
	case 2:
		{
			double dbTime = 0;
			dbTime = (::GetTickCount() - m_dwTimeStarted)*1.0;
			m_sValue2.Format("%f",dbTime);
		}
		break;
	case 3:
		{
			double dbTime = 0;
			MSG msg;
			UINT LFactor = 1000;
			while(::GetTickCount() - m_dwTimeStarted < 3*LFactor)
			{
				if (PeekMessage(&msg,0,0,0,PM_REMOVE))
				{
					TranslateMessage(&msg);
					DispatchMessage(&msg);
				}
			}
			
			dbTime = (::GetTickCount() - m_dwTimeStarted)*1.0;
			m_sValue3.Format("%f",dbTime);
		}
		break;
	case 4:
		{
			UINT