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Tip of the Day
Language: Visual Basic
Expertise: Intermediate
Aug 28, 1998

WEBINAR:

On-Demand

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


Let the User Control Long Operations

To allow the user to control long operations, use a single CommandButton to control starting and stopping a looping process:
 Dim Running As Boolean
Private Sub CmdStartStop_Click()
	If Running Then
		' Stop the process.
		Running = False
		CmdStartStop.Caption = "Start"
		CmdStartStop.Enabled = False
	Else
		' Start the process.
		Running = True
		CmdStartStop.Caption = "Stop"
		RunLongProcess
		CmdStartStop.Enabled = True
	End If
End Sub
Private Sub RunLongProcess()
	Do While Running
		' Do something repeatedly.
		:
		DoEvents
	Loop
End Sub
Rod Stephens
 
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