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ReadExpression, WriteExpression
Message
Information générale
Forum:
Visual FoxPro
Catégorie:
Classes - VCX
Divers
Thread ID:
00514400
Message ID:
00514451
Vues:
10
Hi!

These methods are built to use them in the builders for classes in Design time only. Never use them in the classes logic. If you want dynamic property getting/setting, do following:

I you have property name in a variable:
lcPropName = "SomeProp"

Than you can read it using, for example,

eval("thisform.MyContainer.MyObject." + m.lcPropName)

And write it using

thisform.MyContainer.MyObject.&lcPropName = lcValue

or, if MyObject supports the AddProperty method,

thisform.MyContainer.MyObject.AddProperty(lcPropName,lcValue)

(AddProperty, if property exists, just change its value).

HTH.

>Hi
>
>I've tried using read and write expression in classes but have found that once started I'm committed to using them even within the logic of the class. I just wanted to use READ for external calls rather than having write my own, or have individual getProp methods for each property.
>
>I'd be interested to know if others use these methods, why etc.
>
>Sarah
Vlad Grynchyshyn, Project Manager, MCP
vgryn@yahoo.com
ICQ #10709245
The professional level of programmer could be determined by level of stupidity of his/her bugs

It is not appropriate to say that question is "foolish". There could be only foolish answers. Everybody passed period of time when knows nothing about something.
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