VBProjectsEvents在哪里？ [英] Where are the VBProjectsEvents?
问题描述
Microsoft.Vbe.Interop ，我可以访问 CommandBarEvents 和 ReferencesEvents 通过 VBE.Events 。 然而，有用的 MSDN 文档似乎表明有一个 VBProjectsEvents ，我可以使用它来通知我的加载项，当一个项目被添加到/从VBE删除...这正是我要在这里实现的。
我可以在对象浏览器中看到 _VBProjectsEvents 接口，但没有实现相对于 _CommandBarControlsEvents 接口，它由 CommandBarEventsClass 实现），使用ReSharper的执行功能。
是否在任何地方实现了 _VBProjectsEvents 如果没有，那么关于从IDE中删除的VBProject的通知如何呢？
你需要创建一个
实现 _dispVBProjectsEvents dispatch接口 - 这是一个实现，通过调用常规托管的.net事件来响应这些事件，有效地包装$ code> VBProjects 事件：
public class VBProjectsEventsSink：_dispVBProjectsEvents
{
public event EventHandler< DispatcherEventArgs< VBProject>> ProjectAdded;
public void ItemAdded（VBProject VBProject）
{
if（VBProject.Protection == vbext_ProjectProtection.vbext_pp_none）
{
OnDispatch（ProjectAdded，VBProject）;
}
}
public event EventHandler& DispatcherEventArgs< VBProject>> ProjectRemoved;
public void ItemRemoved（VBProject VBProject）
{
if（VBProject.Protection == vbext_ProjectProtection.vbext_pp_none）
{
OnDispatch（ProjectRemoved，VBProject）;
}
}
public event EventHandler< DispatcherRenamedEventArgs< VBProject>> ProjectRenamed;
public void ItemRenamed（VBProject VBProject，string OldName）
{
var handler = ProjectRenamed;
if（handler！= null&& VBProject.Protection == vbext_ProjectProtection.vbext_pp_none）
{
handler.Invoke（this，new DispatcherRenamedEventArgs< VBProject>（VBProject，OldName））;
}
}
public event EventHandler& DispatcherEventArgs< VBProject>> ProjectActivated;
public void ItemActivated（VBProject VBProject）
{
if（VBProject.Protection == vbext_ProjectProtection.vbext_pp_none）
{
OnDispatch（ProjectActivated，VBProject）;
}
}
private void OnDispatch（EventHandler< DispatcherEventArgs< VBProject>> dispatched，VBProject项目）
{
var handler = dispatched;
if（handler！= null）
{
handler.Invoke（this，new DispatcherEventArgs< VBProject>（project））;
}
}
}
DispatcherEventArgs 类只是一个方便的方式来公开事件涉及的 VBProject 项目，它可以重用于其他接收器：
public class DispatcherEventArgs< T> ：EventArgs
其中T：class
{
private readonly T _item;
public DispatcherEventArgs（T item）
{
_item = item;
}
public T Item {get {return _item; }}
}
客户端代码需要注册接收器 - 为此您需要保持一个 IConnectionPoint 字段及其 int cookie：
private readonly IConnectionPoint _projectsEventsConnectionPoint;
private readonly int _projectsEventsCookie;
VBProjects 集合实现 IConnectionPointContainer 接口，您需要使用它来查找连接点：
var sink = new VBProjectsEventsSink（）;
var connectionPointContainer =（IConnectionPointContainer）_vbe.VBProjects;
var interfaceId = typeof（_dispVBProjectsEvents）.GUID;
connectionPointContainer.FindConnectionPoint（ref interfaceId，out _projectsEventsConnectionPoint）;
一旦您有 IConnectionPoint ，请使用建议方法来连接您的接收器并检索 cookie ：
_projectsEventsConnectionPoint.Advise（sink，out _projectsEventsCookie）;
然后，您可以像任何正常.net事件一样处理接收器事件： p>
sink.ProjectAdded + = sink_ProjectAdded;
sink.ProjectRemoved + = sink_ProjectRemoved;
sink.ProjectActivated + = sink_ProjectActivated;
sink.ProjectRenamed + = sink_ProjectRenamed;
当你想断开你的接收器时，你将 cookie 传递给 Unadvise 方法 IConnectionPoint 实例：
_projectsEventsConnectionPoint.Unadvise（_projectsEventsCookie）;
简单！
Using Microsoft.Vbe.Interop in C#, I can access CommandBarEvents and ReferencesEvents via VBE.Events.
However the ever-so helpful MSDN documentation seems to indicate that there's a VBProjectsEvents that I could use to notify my add-in when a project is added or removed to/from the VBE... which is exactly what I'm trying to achieve here.
I can see that _VBProjectsEvents interface in the object browser, but no implementation for it (as opposed to the _CommandBarControlsEvents interface, which is implemented by the CommandBarEventsClass), using ReSharper's go to implementation feature.
Is there an implementation of the _VBProjectsEvents interface anywhere? If not, then how does one go about being notified of a VBProject being removed from the IDE?
You need to create a sink for these events.
Implement the _dispVBProjectsEvents dispatch interface - here's an implementation that responds to these events by invoking regular managed .net events, effectively "wrapping" the VBProjects events:
public class VBProjectsEventsSink : _dispVBProjectsEvents
{
public event EventHandler<DispatcherEventArgs<VBProject>> ProjectAdded;
public void ItemAdded(VBProject VBProject)
{
if (VBProject.Protection == vbext_ProjectProtection.vbext_pp_none)
{
OnDispatch(ProjectAdded, VBProject);
}
}
public event EventHandler<DispatcherEventArgs<VBProject>> ProjectRemoved;
public void ItemRemoved(VBProject VBProject)
{
if (VBProject.Protection == vbext_ProjectProtection.vbext_pp_none)
{
OnDispatch(ProjectRemoved, VBProject);
}
}
public event EventHandler<DispatcherRenamedEventArgs<VBProject>> ProjectRenamed;
public void ItemRenamed(VBProject VBProject, string OldName)
{
var handler = ProjectRenamed;
if (handler != null && VBProject.Protection == vbext_ProjectProtection.vbext_pp_none)
{
handler.Invoke(this, new DispatcherRenamedEventArgs<VBProject>(VBProject, OldName));
}
}
public event EventHandler<DispatcherEventArgs<VBProject>> ProjectActivated;
public void ItemActivated(VBProject VBProject)
{
if (VBProject.Protection == vbext_ProjectProtection.vbext_pp_none)
{
OnDispatch(ProjectActivated, VBProject);
}
}
private void OnDispatch(EventHandler<DispatcherEventArgs<VBProject>> dispatched, VBProject project)
{
var handler = dispatched;
if (handler != null)
{
handler.Invoke(this, new DispatcherEventArgs<VBProject>(project));
}
}
}
The DispatcherEventArgs class is just a convenient way to expose the VBProject item involved with the event, and it can be reused for other sinks:
public class DispatcherEventArgs<T> : EventArgs
where T : class
{
private readonly T _item;
public DispatcherEventArgs(T item)
{
_item = item;
}
public T Item { get { return _item; } }
}
The client code needs to register the sink - and for that you need to keep an IConnectionPoint field and its int cookie:
private readonly IConnectionPoint _projectsEventsConnectionPoint;
private readonly int _projectsEventsCookie;
The VBProjects collection implements the IConnectionPointContainer interface, which you need to use to find the connection point:
var sink = new VBProjectsEventsSink();
var connectionPointContainer = (IConnectionPointContainer)_vbe.VBProjects;
var interfaceId = typeof (_dispVBProjectsEvents).GUID;
connectionPointContainer.FindConnectionPoint(ref interfaceId, out _projectsEventsConnectionPoint);
Once you have the IConnectionPoint, use the Advise method to "connect" your sink and retrieve a cookie:
_projectsEventsConnectionPoint.Advise(sink, out _projectsEventsCookie);
And then you can handle the sink events as you would any "normal" .net events:
sink.ProjectAdded += sink_ProjectAdded;
sink.ProjectRemoved += sink_ProjectRemoved;
sink.ProjectActivated += sink_ProjectActivated;
sink.ProjectRenamed += sink_ProjectRenamed;
When you want to disconnect your sink, you pass the cookie to the Unadvise method of the IConnectionPoint instance:
_projectsEventsConnectionPoint.Unadvise(_projectsEventsCookie);
"Simple as that!"
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