Using Programming Languages other than VBA

Sub Example_OLELaunch()
	' This example reads and modifies the preference value that controls
	' whether to launch the parent application when plotting OLE objects.
	' When finished, this example resets the preference value back to
	' its original value.

	Dim ACADPref As AcadDatabasePreferences
	Dim originalValue As Variant, newValue As Variant

	' Get the user preferences object
	Set ACADPref = ThisDrawing.preferences

	' Read and display the original value
	originalValue = ACADPref.OLELaunch
	MsgBox "The OLELaunch preference is set to: " & originalValue

	' Modify the OLELaunch preference by toggling the value
	ACADPref.OLELaunch = Not (ACADPref.OLELaunch)
	newValue = ACADPref.OLELaunch
	MsgBox "The OLELaunch preference has been set to: " & newValue

	' Reset the preference back to its original value
	'
	' * Note: Comment out this last section to leave the change to
	'		 this preference in effect
	ACADPref.OLELaunch = originalValue
	MsgBox "The OLELaunch preference was reset back to: " & originalValue
End Sub