GetTickCount函数---GetTickCount返回(retrieve)从操作系统启动到现在所经过(elapsed)的毫秒数,它的返回值是DWORD。

 GetTickCount函数
  函数功能:GetTickCount返回(retrieve)从操作系统启动到现在所经过(elapsed)的毫秒数,它的返回值是DWORD。
  函数原型:
  DWORD GetTickCount(void);
  VB版
  VB声明:
  Declare Function GetTickCount Lib "kernel32" Alias "GetTickCount" () As Long
  例如:实现延时
  Public Sub Sleep(numa As Long)
  Dim num1 As Long
  Dim num2 As Long
  Dim numb As Long
  numb = 0
  num1 = GetTickCount
  Do While numa - numb > 0
  num2 = GetTickCount
  numb = num2 - num1
  DoEvents
  Loop
  End Sub
  C++版
  CString s;
  DWORD k=::GetTickCount(); //获取毫秒级数目
  int hm=k/3600000; //hm为小时数
  int ms=(k-3600000*hm)/60000; //ms为分钟数
  int se=(k-3600000*hm-60000*ms)/1000; //se为秒数(除以1000是因为k精确到毫秒)
  s.Format("%d:%d:%d",hm,ms,se); //输出时、分、秒
  库文件:kernl32.dll
  C/C++头文件:winbase.h

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