声明：
Declare Function mciSendString Lib "winmm.dll" Alias _
"mciSendStringA" (ByVal lpstrCommand As String, ByVal _
lpstrReturnString As String, ByVal uReturnLength _
As Long, ByVal hwndCallback As Long) As Long
代码：
Dim returnstring As String
FileName As String
returnstring = Space(127)
FileName = "C:\A1.avi"
erg = mciSendString("open " & Chr$(34) & FileName & 
Chr$(34) & " type avivideo alias video", returnstring,
127, 0)
erg = mciSendString("set video time format ms",
returnstring, 127, 0)
erg = mciSendString("play video from 0", returnstring,
127, 0)
'记着关闭！
erg = mciSendString("close video", returnstring, 127, 0)