Begin Automatic Drag.
procedure BeginAutoDrag; dynamic;
__fastcall BeginAutoDrag();
BeginAutoDrag is called automatically when a user drags a control whose DragMode is dmAutomatic. Do not call BeginAutoDrag in application code.
As implemented in TControl, BeginAutoDrag calls BeginDrag, passing in the global Mouse variable's DragImmediate and DragThreshold properties.
DragKind
DragMode
EndDrag
Mouse
DragImmediate
DragThreshold