ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Layouts Namespace / LayoutTool Class / HandleMouseDownAsync Method
A LayoutViewMouseButtonEventArgs that contains the event data.
Version

HandleMouseDownAsync Method (LayoutTool)
Occurs when the OnToolMouseDown event is handled.
Syntax
protected virtual Task HandleMouseDownAsync( 
   LayoutViewMouseButtonEventArgs args
)

Parameters

args
A LayoutViewMouseButtonEventArgs that contains the event data.

Return Value

A Task that represents a mouse down event.
Remarks
This method is intended to perform asynchronous operations associated with a mouse down event. It will be called if you override the OnToolMouseDown virtual method and set the handled property on the LayoutViewMouseButtonEventArgs to true.
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also