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Tip of the Day
Language: Visual Basic
Expertise: Beginner
Aug 6, 1997



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

The StartMode Property Of The App Object

The StartMode setting in the Options dialog of the Tools menu in VB4 determines only whether an application with no startup form continues to run after Sub Main has completed. This allows testing of OLE Automation servers. But the StartMode property of the App object allows you to determine in code whether an application shows any visible interface to users. A single VB executable file can be both an invisible server and a normal application, just like Excel. The Sub Main procedure lets you test the value of App.StartMode to decide whether or not to show a form. If the application is started directly by a user, the StartMode is vbSModeStandalone. If started by a client application, the StartMode is vbSModeAutomation.
 Sub Main
	If App.StartMode = vbSModeStandalone Then
		'OLE server action...
	End If
William Storage
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