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Tip of the Day
Language: Visual Basic
Expertise: Intermediate
May 7, 2002

WEBINAR:

On-Demand

Application Security Testing: An Integral Part of DevOps


Allow Interval Greater Than Timer Controls


When you need a timer for a larger interval than the Timer control allows, insert this code into a BAS module. The procedure starts when the timer interval has passed:
 
Dim lTimerId As Long
Private Declare Function SetTimer Lib "user32" _
(ByVal hWnd As Long, ByVal nIDEvent As _
Long, ByVal uElapse As Long, ByVal _
lpTimerFunc As Long) As Long
Private Declare Function KillTimer Lib _
"user32" (ByVal hWnd As Long, ByVal _
nIDEvent As Long) As Long
Private Sub TimerProc(ByVal lHwnd As Long, _
ByVal lMsg As Long, ByVal lTimerId As Long, _
ByVal lTime As Long)
Dim lResult As Long
lResult = StopTimer(lTimerId)
Call InsertYourProcessNameHere
'code to be executed after interval
End Sub
Public Sub StartTimer(lInterval As Long) _
'convert interval to milliseconds prior to
'passing
lTimerId = SetTimer(0, 0, lInterval, _
AddressOf TimerProc)
End Sub
Public Function StopTimer(lTimerId As Long) _
As Long
'must pass the TimerId returned by SetTimer
StopTimer = KillTimer(0, lTimerId)
End Function
This call executes the procedure:
Call StartTimer(5000) '5 seconds

You can stop the timer before the interval by calling the StopTimer function.
Alex Whyte
 
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