/// <summary>
/// Raises the DragStart event.
/// </summary>
/// <param name="mousePt">Mouse point at time of event.</param>
/// <param name="offset">Offset of mouse compared to element.</param>
/// <param name="c">Control that starts the drag operation.</param>
protected virtual void OnDragStart(Point mousePt, Point offset, Control c)
{
// Convert point from client to screen coordinates
mousePt = Target.OwningControl.PointToScreen(mousePt);
DragStartEventCancelArgs ce = new DragStartEventCancelArgs(mousePt, offset, c);
DragStart?.Invoke(this, ce);
// If event is not cancelled then allow dragging
_dragging = !ce.Cancel;
}
private void OnDragStart(object sender, DragStartEventCancelArgs e)
{
Navigator.InternalDragStart(e, null);
}
private void OnDragStart(object sender, DragStartEventCancelArgs e)
{
_navigator.InternalDragStart(e, _page);
}
