Validate an edit control

Hi!

How do you guys validate an edit control to accept only some chars?
I have a theory about it...

1.- subclass the edit control
2.- trap the WM_KEYPRESS or WM_CHAR
3.- test the character stroke.

is this the proper way?

Additional: I'm trying to accept only the following chars: 0-9 and .

Try this...

Code:

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CreateWindow("EDIT",NULL,
        WS_CHILD | WS_VISIBLE | WS_TABSTOP |
        ES_NUMBER | ES_CENTER,
        0,0,100,30,hParent,NULL,hInstance,NULL);

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Use EN_UPDATE and scan for any illegal chars, you can use ES_NUMBER but it doesn't allow decimal separators to be entered. Either way, you have to do some additional work.

Quote:

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Originally Posted by adeyblue

you can use ES_NUMBER but it doesn't allow decimal separators

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Well, I'll be... you learn something new every day.

Thanks, I'll try EN_UPDATE