'Declaration
 
Protected Overridable Sub OnPreviewMouseLeftButtonDown( _
   ByVal e As System.Windows.Input.MouseButtonEventArgs _
) 

'Usage
 
Dim instance As DropDownButton
Dim e As System.Windows.Input.MouseButtonEventArgs
 
instance.OnPreviewMouseLeftButtonDown(e)

protected virtual void OnPreviewMouseLeftButtonDown( 
   System.Windows.Input.MouseButtonEventArgs e
)

protected procedure OnPreviewMouseLeftButtonDown( 
    e: System.Windows.Input.MouseButtonEventArgs
); virtual; 

protected function OnPreviewMouseLeftButtonDown( 
   e : System.Windows.Input.MouseButtonEventArgs
);

protected: virtual void OnPreviewMouseLeftButtonDown( 
   System.Windows.Input.MouseButtonEventArgs* e
) 

protected:
virtual void OnPreviewMouseLeftButtonDown( 
   System.Windows.Input.MouseButtonEventArgs^ e
) 

Parameters

e

Target Platforms: 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

DropDownButton Class
DropDownButton Members