CListCtrl: Keeping mouse button pressed on scroll bar => no WMs come through

[Stoodent]

Hi,

I discovered a strange problem with CListrCtrl:
I wrote an application which runs mulithreaded: The GUI-thread inserts log messages into a log window (CListCtrl) when it detects a window message which indicates that a new log item has been emitted by a logger.
Problem:
When you hold down the left mouse button on the scroll bar's "thumb"*1 of the list control those messages won't be processed.

How can I solve this problem ?
Keep in mind that the threads which produce the log shall not be affected too much regarding timing (they may do some time crtitical things).

You may download the sample application attached to this thread to see what I mean (created with VC++ 6.0):
After you started it you should see a dialog with two buttons. Pressing the [OK] button will create a second thread which simulates the log-event-sender which will be active for about 10 seconds producing one window message for a log-event per 10ms.
During that time you may hold the scroll button and you'll see that no more items get inserted. If you release the mouse button items get inserted again ==> window messages can be received again by the GUI-thread.

It would be great if anybody could give me a hint on how to work around that problem.
Thanks in advance.

__
*1: This is called the "thumb" of a scroll bar (see msdn):

[Viorel]

I hope the attached changed implementation is suitable for you.

[Stoodent]

I hope the attached changed implementation is suitable for you.

Thank you very much,
this was exactly I was looking for.

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