leol@cat5.cs.wisc.edu (Leo Lim) (12/08/90)
Hello, everyone! I found there is a conflict between backmenu.exe & stars.exe. The problem was: When I close stars, backmenu can't pop up anymore when i click right button mouse. However, (of course) backmenu is still in memory. Any comments or suggestion about this??? THANKS++; === Leo Martin Lim ===
ih@ecs.soton.ac.uk (Ian Heath) (12/11/90)
In <1990Dec8.080128.222@daffy.cs.wisc.edu> leol@cat5.cs.wisc.edu (Leo Lim) writes: > Hello, everyone! >I found there is a conflict between backmenu.exe & stars.exe. >The problem was: > When I close stars, backmenu can't pop up anymore when i click right button > mouse. However, (of course) backmenu is still in memory. >Any comments or suggestion about this??? >THANKS++; Back-Menu works by replacing the message processing function of the Desktop with its own. The replacement looks for the right mouse button being clicked and brings up a menu if this is the case. Any other messages are passed on to the *old* message processing function. I assume Stars works in the same way. The problem comes about from having both progams installed, and then uninstalling the wrong program first. The scenario goes something like this:- Stars installs itself. It finds the default desktop message handler, remembers it, and replaces it with its own. Back-Menu then installs itself. It finds the message handler installed by Stars, and remembers this and replaces it with *its* own handler. So, for any message the dwsktop receives, if Back-Menu does not process it, it is passed on to what Back-Menu thinks is the default message function (which is Stars). Stars then does much the same thing, passing the message on to the default windows desktop message processing function. This is all OK until the user wants to uninstall Stars. When Stars removes itself (assuming it does much the same as Back-Menu) it restores the old desktop message processing function (ie. the default one). Back-Menu is no longer receives any messages and so wil no longer pop-up, and because it hasn't been closed, it still remains in memory. The problem is very akin to that of installing and uninstalling TSR programs in DOS. If you don't uninstall them in the opposite order to that which they were installed, probelms occur. The only solution at present is to to do this with Back-Menu and Stars. I'm thinking of modifications to Back-Menu to stop it being removed if it isn't the last program in this *chain*, like most TSR programs, and this should help. >=== Leo Martin Lim === +-------------------------------+-------------------------------+ | Ian Heath, | | | Postgraduate Student, | .signatures, who needs 'em. | | University of Southampton, | | | England. | | | | | | email: ih@uk.ac.soton.ecs | | +-------------------------------+-------------------------------+