CDialogBar Window Cannot Be Resized While Floating

I have a CDialogBar window that docks on the edges of the Main Frame just as
it is supposed to. But I can resize it only when it is docked and not when
it floats. I noticed that when it floats the CDialogBar window does not
move with the Main Frame. In fact I can move the Main Frame completely out
from under this CDialogBar window making it to appear to be in the desktop.
My guess is when the CDialogBar window is floating its parent and owner
becomes the desk top instead the Main Frame window. This would mean the Main
Frame does not get its messages including those that would resize the
CDialogBar window.

I looked for an event that would detect when the CDialogBar window
transitions from docked to floating so I could execute SetParent() on that
event. I did not find a message that triggered on it. I tried using
IsFloating() to branch to a SetParent() statement in an OnMove() handler. It
did not work because IsFloating() returned the state the CDialogBar window
was in when the move started, not when it ended. When trasitioning from
docked to floating it retuned false. When transitioning from floating to
docked it returned true. The code was not workable because a resize or move
while docked also triggers the OnMove() event where IsFloat() always returns
false as expected. OnMoving() did not trigger at all.

Why doesn't the CDialogBar window become the child of the Main Window when
it transtions to a floating state? How can a change to a floating state be
triggered on so SetParent() can be used to make the Main Window the parent?

The On Move event handler:

void CProjectView::OnMove(int x, int y)
{
    CInitDialogBar::OnMove(x, y);
    BOOL b = IsFloating();
    if( IsFloating() )
    { SetParent( AfxGetMainWnd() );
    }
}

The class CInitDialogBar that CProjectView is instantiated from has as its
parent CDialogBar. The code for CInitDialogBar can be viewed here:
http://www.codeguru.com/Cpp/W-D/dislog/ddxddv/article.php/c1997

I am using MS VS 2003.