Hi Ross What a vague description of the problem.
It sounds like you program by mysticism more than logic. Despite what you might believe, some or all of the objects in your listview have most likely been destroyed and you're looking at random memory, where the objects used to be. In order to solve this problem, you need to isolate "where" every object in your list is created and destroyed. Then use the debugger to find out "when" those events occur. If the window is being destroyed and re-created, where and when are those objects re-instantiated? Is this a multi-threaded application? Todd. > Wondering if anyone has any ideas. > > > > I've had this problem a long time from when I started writing an app > about 7 or 8 years ago, but it happens so rarely it's not usually an > issue. But one user in particularly is regularly sending me MadExcept > reports which either have access violation errors or "the application > appears to be frozen". In all cases it's during an access of a > TListItem which was perfectly valid 10 lines of code up a procedure > but suddenly doesn't exist. > > > > The screenshot created at the same time shows the ListView has no > visible items, but I know for a fact there are 30 or more items in the > list. I believe sometimes the items visually disappear and reappear > shortly afterwards, like a Desktop refresh. > > > > I think I've heard something about Windows recreating the window > handles or some such thing. I don't understand why it would do so. > There are no changes to the listview that would require re-creating > the window. > > > > Any ideas? > > > > > _______________________________________________ > NZ Borland Developers Group - Delphi mailing list > Post: [email protected] > Admin: http://delphi.org.nz/mailman/listinfo/delphi > Unsubscribe: send an email to [email protected] with > Subject: unsubscribe -- /Fortune/ favours the *brave*
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