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

'Usage
 
Dim instance As HierarchicalGroupByItem
Dim e As MouseButtonEventArgs
 
instance.OnMouseLeftButtonDown(e)

protected override void OnMouseLeftButtonDown( 
   MouseButtonEventArgs e
)

Parameters

e

A MouseButtonEventArgs that contains the event data.

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

HierarchicalGroupByItem Class
HierarchicalGroupByItem Members
Base Implementation in OnMouseLeftButtonDown