'Declaration
 
Protected Overrides Sub OnPreviewMouseLeftButtonDown( _
   ByVal e As MouseButtonEventArgs _
) 

'Usage
 
Dim instance As PopupEx
Dim e As MouseButtonEventArgs
 
instance.OnPreviewMouseLeftButtonDown(e)

protected override void OnPreviewMouseLeftButtonDown( 
   MouseButtonEventArgs e
)

Parameters

e

Target Platforms: Windows 11, Windows, 10, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

PopupEx Class
PopupEx Members
Base Implementation in OnPreviewMouseLeftButtonDown