//- The DesignSurface class provides several design-time services automatically.
//- The DesignSurface class adds all of its services in its constructor.
//- Most of these services can be overridden by replacing them in the
//- protected ServiceContainer property.To replace a service, override the constructor,
//- call base, and make any changes through the protected ServiceContainer property.
private void InitServices()
{
//- each DesignSurface has its own default services
//- We can leave the default services in their present state,
//- or we can remove them and replace them with our own.
//- Now add our own services using IServiceContainer
//-
//-
//-
_menuCommandService = new MenuCommandServiceExt(this);
if (_menuCommandService != null)
{
//- remove the old Service, i.e. the DesignsurfaceExt service
this.ServiceContainer.RemoveService(typeof(IMenuCommandService), false);
//- add the new IMenuCommandService
this.ServiceContainer.AddService(typeof(IMenuCommandService), _menuCommandService);
}
//-
//-
//- IToolboxService
_toolboxService = new ToolboxServiceImp(this.GetIDesignerHost());
if (_toolboxService != null)
{
this.ServiceContainer.RemoveService(typeof(IToolboxService), false);
this.ServiceContainer.AddService(typeof(IToolboxService), _toolboxService);
}
}
public void EnableDragandDrop()
{
// For the management of the drag and drop of the toolboxItems
Control ctrl = this.GetView();
if (null == ctrl)
{
return;
}
ctrl.AllowDrop = true;
ctrl.DragDrop += new DragEventHandler(OnDragDrop);
//- enable the Dragitem inside the our Toolbox
ToolboxServiceImp tbs = this.GetIToolboxService();
if (null == tbs)
{
return;
}
if (null == tbs.Toolbox)
{
return;
}
tbs.Toolbox.MouseDown += new MouseEventHandler(OnListboxMouseDown);
}
private DesignSurfaceExt2 CreateDesignSurface()
{
//- step.0
//- create a DesignSurface and put it inside a Form in DesignTime
DesignSurfaceExt2 surface = new DesignSurfaceExt2();
//-
//-
IDesignSurfaceExt2 isurf = (IDesignSurfaceExt2)surface;
this._listOfDesignSurface.Add(isurf);
//- step.1
//- enable the UndoEngines
isurf.GetUndoEngineExt().Enabled = true;
//- step.2
//- try to get a ptr to ISelectionService interface
//- if we obtain it then hook the SelectionChanged event
ISelectionService selectionService = (ISelectionService)(isurf.GetIDesignerHost().GetService(typeof(ISelectionService)));
if (null != selectionService)
{
selectionService.SelectionChanged += new System.EventHandler(OnSelectionChanged);
}
//- step.3
//- Select the service IToolboxService
//- and hook it to our ListBox
ToolboxServiceImp tbox = isurf.GetIToolboxService() as ToolboxServiceImp;
if (null != tbox)
{
tbox.Toolbox = listBox1;
}
//-
//- finally return the Designsurface
return(surface);
}
//- Management of the Drag&Drop of the toolboxItems contained inside our Toolbox
private void OnListboxMouseDown(object sender, MouseEventArgs e)
{
ToolboxServiceImp tbs = this.GetIToolboxService();
if (null == tbs)
{
return;
}
if (null == tbs.Toolbox)
{
return;
}
if (null == tbs.Toolbox.SelectedItem)
{
return;
}
tbs.Toolbox.DoDragDrop(tbs.Toolbox.SelectedItem, DragDropEffects.Copy | DragDropEffects.Move);
}