elapsed time

[FranKK]

I need to count the milliseconds elapsed from a starting point.
How can i do?

[Raggart]

Hi,

Use a Timer control (the control that looks like a little hand watch). Look up the help if you need to; it's really easy to use.

Raggart

[Chris]

beside using the Timer control, you also can you the Win32 API function as below:

Option Explicit
Private Declare Function GetTickCount Lib "kernel32" () As Long
Dim StartTime As Long ' in Miliseconds
Dim EndTime As Long ' in Miliseconds
Dim TotalDuration As Long ' in Miliseconds

Private Sub Command1_Click()
StartTime = GetTickCount
End Sub

Private Sub Command2_Click()
EndTime = GetTickCount
TotalDuration = EndTime - StartTime

End Sub

If you feel the above method does not meet you require precision, then you can use the QueryPerformanceFrequency and QueryPerformanceCounter Win32 API function, but this is more complex than the GetTickCount that I show above. For this function you need to declare the following Types:

Private Type LARGE_INTEGER
LowPart As Long
HighPart As Long
End Type

Hope this can speed up your program performance.




Edited by Chris on 03-09-2000 at 12:48 PM