NetNews Usenet Archive 1992 #20/NN_1992_20.iso/spool/comp/os/mswindo/programm/misc/1754

Text File | 1992-09-09 | 1.7 KB | 39 lines

Newsgroups: comp.os.ms-windows.programmer.misc
Path: sparky!uunet!psgrain!ee.und.ac.za!ucthpx!casper.cs.uct.ac.za!jholdern
From: [e-mail] (J E Holderness)
Subject: Cursor in list box & Multiple Instances
Message-ID: <[e-mail]>
Organization: Computer Science Department, University of Cape Town
Date: Wed, 9 Sep 1992 23:57:40 GMT
Lines: 29

I have two problems which I'm hoping someone can help me with. The first
is regarding the mouse cursor. I managed to change the cursor in a dialog
box using the GetWindowClass function, and it worked fine, except that it
changed back to the default arrow as soon as it was moved over a listbox
or button.

I don't mind the buttons so much, but the list box takes up most of the
dialog area, so my pretty cursor hardly ever gets seen. Is there any way
to fix this so that the cursor always stays as specified by the GetWindowClass
function? Better still, is there an equivalent GetWindowClass function for
each control or some way of controlling the cursor for each individual area
of the dialog?

My next problem is with multiple instances of an application. I can tell if
a previous instance is running by checking the hPrevInstance variable,
but having found that out, I can't seem to get any further. At the moment
all I want to do is terminate the previous instance if it is running, but
more general information on say passing messages to the application would
be useful for future referance.

I "discovered" a function called GetInstanceData, but I have no idea what
it does. What exactly is the data that it returns? If I could obtain the
MainWindow handle using this, then would I be able to send messages to
that window (telling it to close for example)?

Thanks in advance for any help.

- Jim