Read-only control sources

[fruityBoy]

Hi

I don't know if anybody has come across this (or maybe I'm just daft, but I did not find any mention of this in MSDN), but I was building up a control source for a text box in code, and I accidentally included it in brackets, so my control source in affect was somthing like (customertable.cu_ref).

I found that this makes the control readonly... So basically :

(controlsource) &&<----readonly
controlsource &&<--- read / write

Am I missing somthing fundamental, or have I stumbled across an undocumented feature?

I'm using Vis Fox 7, I haven't tried earlier versions yet.

Thanks

Simon

 

[weedz]

Isn't it so, that if you bind an invalid controlsource to a control, the control becomes readonly ?

HTH,

Weedz (Wietze Veld)
My private project:

http://www.crowncap.demon.nl\info\crwnbase

CrownBase source code can be downloaded !!

 

[fruityBoy]

Hi

I think I've just found the answer, fox is evaluating what i put in brackers, like EVAL.

So

bob = &quot;sid&quot;
sid = &quot;hello&quot;

if I set my text control source to bob, it will display &quot;sid&quot; on the form.

however, if I set the control source to (bob) it displays &quot;hello&quot; on the form.

Useful for dynamic control sources I think...

 

[fruityBoy]

Yeah, cos I put it in brackets, it was trying to evaluate the control source and returning an error, hence read only..