to allow to write few marks in a dialog box

[Guest_imported]

Hi,
I would like to allow to write just these marks in a dialog box :
'0' -> '9'
'x' 'X' '+'

I used the method OnChar to make this but it doesn't work.
Someone can help me ?

Thanks

 

[Jeffray]

Why don't you set a CStatic control in the dialog? then whenever you want to display your mark, you just need to write it into your CStatic control. It is much simpler.

 

[Guest_imported]

The problem is the user must write a polynom like this for example :

x9+x6+x2

and I can't use a CStatic for this.
I must use a field where the user can write.

Thanks for help

 

[sflam]

Derived a special CEdit and override OnChar(), do not call the base class implementation if nChar is not one of your "approved" characters.

HTH
Shyan

 

[Jeffray]

Then why not use a edit box?

 

[Jeffray]

Yes, just do as sflam said. If the char is not in your list, just ignore it.