Removing a CDockable Pane

[Nick Schultz]

This is an update to my previous thread "Dynamically creating
CDockablePanes"

What I want to do is to Create multiple CDockablePane(CDP) that will be
destroyed when the user clicks the "X" Button. While it may seem trivial, I
have ran into some hiccups

When the CDP is docked, clicking the X will trigger an event that can be
caught by DockablePane::OnPressCloseButton(). From there, I can then
PostMessage(WM_CLOSE); and my CDP will be destroyed correctly

The problem is that when you undock the CDP, MFC creates a MiniFrame and
places your CDP inside it. Now when the user hits the "X", the
OnPressCloseButton() does not get triggered, thus not destroying the CDP
correctly, although it disappear and I lose it forever. The question is,
how do I catch the event that the MiniFrame is sending when the "X" is
pressed? Here are some things I have tried:

1) using spy++ i tried to find the events sent when I pushed the X. I found
two, WM_FLOATSTATUS and WM_SHOWWINDOW.

So I mapped a message handler within my CDP class that simply displays when
showwindow gets sent and whether the param is true or false. When I click
the X, I get output that showWindow was sent with a param of FALSE. So it
seems like my work is done, HOWEVER, when the window is first created, there
are three showWindow events: TRUE, FALSE, TRUE and whenever the user
docks/undocks there are two showWindow events FALSE:TRUE. So that rules out
wm_showwindow..

wm_floatstatus is the only other message that I found that might work,
however it still doesnt look promising.. how do i get my CDP to capture that
message?

If that doesn't work, do you guys have any other ideas on how to tell when
the user clicks the "X" on a floating miniframe containing a CDockablePane?

Thanks in advance,

Nick

[Nick Schultz]

Well it looks like I found a fix...
Here is my message handler for WM_SHOWWINDOW.

void CGrapher::OnShowWindow(BOOL bShow, UINT nStatus){
TRACE0("CLOSE PANE?\n");
if(!bShow && !this->IsWindowVisible())
TRACE0("------------------------CLOSED PANE!!!!\n");
}

It seems when bShow is false and when the window is not visible, it is then
safe to say that the window was "X"ed out.

Watching the output window, I only got the closed pane message when I "X"ed
the floating window after trying numerous other combinations just to make
sure pushing the X is the only way this happens.

While its not exactly what I wanted, I think this might suit me well.

Nick

"Nick Schultz" <nick.s...@flir.com> wrote in message
news:u5K1CdI...@TK2MSFTNGP02.phx.gbl...

[Nick Schultz]

There is actually one scenario other than the desired one that will close
the pane. It is when you have the CDP tabbed with another CDP, and then
make it autohide.

this is fixed by checking CDP::IsInFloatingMultiPaneFrameWnd() to make sure
it is floating.

void CGrapher::OnShowWindow(BOOL bShow, UINT nStatus){

if(!bShow && !IsWindowVisible() && IsInFloatingMultiPaneFrameWnd())
PostMessage(WM_CLOSE);
}

While this seems to be a clumsy way to go about this, it looks like its the
only way to get this done. (although I am a MFC noob, which is why I would
like to keep this discussion open )

Thanks,
Nick

"Nick Schultz" <nick.s...@flir.com> wrote in message

news:eVMLb1Is...@TK2MSFTNGP05.phx.gbl...