Login | Register   
RSS Feed
Download our iPhone app
Browse DevX
Sign up for e-mail newsletters from DevX

By submitting your information, you agree that devx.com may send you DevX offers via email, phone and text message, as well as email offers about other products and services that DevX believes may be of interest to you. DevX will process your information in accordance with the Quinstreet Privacy Policy.

Tip of the Day
Language: Visual Basic
Expertise: Intermediate
Feb 24, 1999



Building the Right Environment to Support AI, Machine Learning and Deep Learning

Quick Timer Control Replacement

Timer controls can be practical when you need to add a small delay in program execution. However, if you need the delay in a class module (instead of on a form), the actual control can be hard to get at. Instead, use these functions in a single code module:
Option Explicit

	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 m_cb As Object

	Public Function timerSet(lTime As Long, cb As Object) _
		As Long
		Set m_cb = cb
		timerSet = SetTimer(0, 0, lTime, AddressOf _
	End Function

	Private Sub timerProcOnce(ByVal lHwnd As Long, ByVal _
		lMsg As Long, ByVal lTimerID As Long, ByVal lTime _
		As Long)

		On Error Resume Next
		Call KillTimer(0, lTimerID)
	End Sub
The class module then calls the function like this:
	timerSet 10, Me
After 10 milliseconds, the code triggers the cbTimer method in the class module:
Public Sub cbTimer()
	' Do some stuff
End Sub
You can also use the function on forms instead of the intrinsic Timer control.
Bo Larsson
Comment and Contribute






(Maximum characters: 1200). You have 1200 characters left.



Thanks for your registration, follow us on our social networks to keep up-to-date