protected override void OnDragEnter(DragEventArgs e)
{
WizardStepDesigner stepDesigner = GetStepDesigner();
WizardStep currentStep = GetWizard().CurrentStep;
// if the user drags something over the wizard step, begin forwarding the events to the step designer
if(stepDesigner != null && currentStep.ClientRectangle.Contains(currentStep.PointToClient(new Point(e.X, e.Y))))
{
forwardingDrag = true;
stepDesigner.InternalOnDragEnter(e);
}
else
{
base.OnDragEnter(e);
}
}
///<summary>
///Called when a drag-and-drop operation enters the control designer view.
///</summary>
///
///<param name="de">A <see cref="T:System.Windows.Forms.DragEventArgs"></see> that provides data for the event. </param>
protected override void OnDragEnter(DragEventArgs de)
{
WizardControl control = (WizardControl)this.Control;
if (control.WizardSteps.Count <= 0)
{
base.OnDragEnter(de);
return;
}
WizardStep step = control.WizardSteps[control.CurrentStepIndex];
Point pt = step.PointToClient(new Point(de.X, de.Y));
Rectangle clientRectangle = step.ClientRectangle;
if (!clientRectangle.Contains(pt))
{
base.OnDragEnter(de);
return;
}
this.GetWizardStepDesigner(step).OnDragEnterInternal(de);
this.forwardOnDrag = true;
}
///<summary>
///Called when a drag-and-drop object is dragged over the control designer view.
///</summary>
///
///<param name="de">A <see cref="T:System.Windows.Forms.DragEventArgs"></see> that provides data for the event. </param>
protected override void OnDragOver(DragEventArgs de)
{
WizardControl control = this.Control as WizardControl;
if (control == null || control.WizardSteps.Count <= 0)
{
de.Effect = DragDropEffects.None;
return;
}
WizardStep step = control.WizardSteps[control.CurrentStepIndex];
Point pt = step.PointToClient(new Point(de.X, de.Y));
WizardStepDesigner wizardStepDesigner = this.GetWizardStepDesigner(step);
Rectangle clientRectangle = step.ClientRectangle;
if (!clientRectangle.Contains(pt))
{
if (!this.forwardOnDrag)
{
de.Effect = DragDropEffects.None;
return;
}
this.forwardOnDrag = false;
wizardStepDesigner.OnDragLeaveInternal(EventArgs.Empty);
base.OnDragEnter(de);
return;
}
else
{
if (!this.forwardOnDrag)
{
base.OnDragLeave(EventArgs.Empty);
wizardStepDesigner.OnDragEnterInternal(de);
this.forwardOnDrag = true;
return;
}
wizardStepDesigner.OnDragOverInternal(de);
return;
}
}
