Hard to say without seeing your subclassing and windows messaging code, and
please don't post that here. Code like that is way too long to evaluate in a
newsgroup post.

Did you follow the example at
http://www.codeproject.com/KB/office..._Outlook.aspx? If not,
what example did you follow?

All I can say is that all of my subclassing code in VB6 works OK without
having to switch to other apps and back, but I mostly use subclassing like
that to provide system tray icons that respond to mouse clicks.

--
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Professional Programming Outlook 2007.
Reminder Manager, Extended Reminders, Attachment Options.
http://www.slovaktech.com/products.htm


"madhavi" madhavi.4002hm@invalid wrote in message
news:madhavi.4002hm@invalid...

Hi,
I am trying to learn windows api and message handling.

I had seen an example of custom task pnae in outlook and I tried to add
a custom pane in instant search pane. But when I try to click the icon
to expand/ collpase the search pane, it is not expanding / collapsing
properly. It is responding properly only if I switch to some other app
and come back to outlook, or if I debug it (so then also I switch from
outlook to Visual studio to see breakpoints)

I subclasses the window and taking care of WM_SIZE message.
With spy++, when I see the messages, I am getting the WM_SIZE only
after the switching to other app and comeback to outlook.

What message do I need to process or what should I do to make it
expand/ collapse properly with a click on the icon?

Thanks in advance


--
madhavi
http://forums.slipstick.com