TDragManager.CanStartDragging function

Member of TDragManagerpublicIn unit Controls

Indicates if the mouse coordinates are within the drag threshold for the specified control.

Declaration

pascal

function CanStartDragging(Site: TWinControl; AThreshold: Integer; 
 X: Integer; Y: Integer): Boolean; virtual
 ; abstract

Description

CanStartDragging is an abstract virtual Boolean function used to determine if the mouse has been moved beyond the threshold that initiates a drag operation. The result is True when the mouse coordinates in X and Y are located within the client rectangle and within the threshold for the specified control in Site.

CanStartDragging must be implemented in a descendent class, like the TDragManagerDefault class in the implementation for the unit.

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.