Re: Fw: Windows IIP problem.

On Fri, 12 Sep 2003 14:21:36 -0700, Tony wrote:

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> Lance,
> Yes point me to the code, if someone can get to it before me the
> easiest way to solve this problem is to make that text box full
> screen and modal OR subclass the desktop window so that you get the
> WM_MOUSEMOVE messages that arive on the desktop window.  (The second
> option is not quite as deterministic because of all the other windows
> that may be on the desktop will get the mouse move message and you
> will have to subclass them all...)  I don't know if it will work (it
> has been a while) but I THINK that if that text box is system modal
> it will get all of the mouse move messages, but that can be annoying
> to the user because they wont even be able to activate any other
> window until the system modal window goes away.

You could as well use SetCapture to get all mouse events exclusively.
However, you should set a custom mouse pointer (maybe that NoDrop or a
crosshair cursor?)  so that the user sees he cannot do anything with the
mouse - and don't forget to release the capture (SetCapture(0))
afterwards... (Releasing the capture if you receive a MOUSE_UP event could
be a good idea, too - maybe the user does not want to do the entropy
generation now?).

(usually, Windows uses that SetCapture thingy internally for Drag'n'Drop
operations...)

Mixmaster uses a nice "scribble" window for entropy collection - it says
"Write your name in here with your mouse" - usually enough entropy is
collected before you finished your name. But that might be overkill.

Michael

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