I've been wrestling with this one for a while now.

The add-in I'm working on builds several solutions in sequence.  I'd
like to have a "master status" dialog that updates as each build is
completed, so that the user can keep track of how far along the entire
build is.  The dialog needs to be displayed non-modally, to allow the
build to proceed while it's being displayed.

Problem is, I can't figure out how to get this to happen.  I'm working
in C# and VS.NET 2003.

In the class that invokes this (BuildConversion), I've got this:

private BuildStatus m_Status;

In the BuildConversion.Build member function, the dialog is shown using
this code:

m_Status = new BuildStatus();
m_Status.Show();

The problem is that the window thus created vanishes (that is, is no
longer on top of the IDE) when this line is executed:

m_DTE.Solution.Open(SolutionName);

The information I've found says that I need to set m_Status.Owner to
the form I want m_Status to stay on top of.  My attempts to set
m_Status.Owner have been, shall we say, less than successful.
m_DTE.MainWindow can't be used directly (as EnvDTE.Window and
System.Windows.Forms.Form are incompatible types), so I tried this:

System.Windows.Forms.Form MainForm =
    (Form)Form.FromHandle(new IntPtr(m_DTE.MainWindow.HWnd));
m_Status.Owner = MainForm;

The problem here is that Form.FromHandle() appears to always be
returning a null reference.  (Form.FromChildHandle() does the same.)
I've also tried going through System.Diagnostics.Process to get the
handle for the main devenv window, with similar (lack of) success.

Any suggestions or alternative approaches would be greatly
appreciated...

--M