EnvDTE80.Windows2.CreateToolWindow2 woes   

Hello,

I have C# add-in for VS2005. From this add-in I create tool 
window:

private void InitToolWindow()
{
    if (_MyAddInWnd == null)
    {
        EnvDTE80.Windows2 toolWins =
            (Windows2)_applicationObject.Windows;

        object objOut = null;

        _MyAddInWnd = toolWins.CreateToolWindow2(
            _addInInstance,
            Assembly.GetExecutingAssembly().Location,
            "MyAddInAddIn.MyAddInCtrl",
            "Caption string",
            "{GUID string goes here}",
            ref objOut
        );

       _MyAddInCtrl = (MyAddInCtrl)objOut;
    }
}

Both user control and add-in are in the same assembly, so 
everything goes smoothly. Except that user control being 
created twice!

When user invokes menu command for my add-in and tool window 
becomes visible for the first time, then new user control is 
created, so `_MyAddInCtrl' member of `Connect' class has 
nothing to do with newly created control.

I tried to use `Window.Object' property instead of member 
variable:

InitToolWindow();

MyAddInCtrl addInCtrl =
    (MyAddInCtrl)_MyAddInWnd.Object;
addInCtrl.SomeProp = 42;
...

The result is the same. Once `_MyAddInWnd' becomes visible 
for the fist time, new user control is created.

How can I ensure that only one instance of user control is 
created?

Thanks in advance
Alex

date: Sat, 24 Nov 2007 19:51:42 +0200   author:   Alex Blekhman

Re: EnvDTE80.Windows2.CreateToolWindow2 woes   

"Alex Blekhman" wrote:
> I have C# add-in for VS2005. From this add-in I create 
> tool window:
> [...]
> Both user control and add-in are in the same assembly, so 
> everything goes smoothly. Except that user control being 
> created twice!

I discovered that actually the whole add-in is created 
twice, not just user control. So, second creation of user 
control is logical and expected. The real question now is 
how to control the lifetime of an add-in. I'll start new 
thread with appropriate subject.

Alex

date: Tue, 27 Nov 2007 11:35:22 +0200   author:   Alex Blekhman