请问高手下面一段程序使用来做什么的,我刚接触vb,对vb不太懂希望大家多帮帮小女子,在这给您作揖了!


lStop = GetTickCount
While bRun
lStart = lStop
............... '一大段采集卡程序
While lStop - iInterval < lStart
DoEvents
lStop = GetTickCount
Wend
Wend
其中GetTickCount和DoEvents是什么意思,请高手指点指点!

谢谢楼上的两位了 我查了一下这段程序前边的通用变量声明有一句
Private Declare Function GetTickCount Lib "kernel32" () as Long
这句也不懂什么意思
我查了一下MSDN: GetTickCount is a Windows API function that returns the number of milliseconds that have elapsed since the current session of Windows was started. This function can be declared in a Project code module as: Declare Function GetTickCount Lib "USER" () As Long

请帮我分析一下上面一段程序有什么作用.谢谢了