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event disabling

Posted on 1997-06-19
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Last Modified: 2010-04-04
I'm writing my event handlers etc. in the main form module that Delphi generated for me.  Is there an easy way to switch event transmission off and on?  I want to be able to change screen appearance by assigning into component properties *without* triggering "OnChange" events.
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Question by:nobbyclark
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icampbe1 earned 100 total points
ID: 1337251
Yes, Subclass the components in question (create a descendant class) and create a new property in that class called DisableEvent (for example).  Supply your own OnChange handler for the origianl component (the ancestor) instead of the one that was plugged in.  Set your new property to TRUE when 'you' want to silently set the other properties.  If it isn't set to true, then you call the original event handler.

It would be nice if all components had a virtual procedure called change that you could override (like Click) and then generate the event if you want to.

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