How to match window class via regular expression?

[DrLarch]

I have several windows that I'm trying to deal with that have no title, no consistent text or much else to match on except for the class. But the class itself varies each time the application runs and has colons in it. For example one class is: "Afx:8:17e:6:10de" and the last four characters are different every time. Could someone please provide an example of how this could be done? The help entry "Window Titles and Text (Advanced)" has a link for REGEXPCLASS directing to StringRegExp which has no examples for matching windows, much less the syntax for matching a window class via this method. Thanks...

[jguinch]

Try Afx:8:17e:6:[a-zA-Z0-9]{4}

Edited September 3, 2015 by jguinch

[Melba23]

DrLarch,

I would imagine this would work:

  Quote

("[REGEXPCLASS:(?i)Abx:8:17e:6:[a-z0-9]{4}")

M23

Edited September 3, 2015 by Melba23
Wrong bracket

[DrLarch]

Thanks Melba & jguinch, I'll give that a shot. But regarding the colons, I read somewhere that they need to be doubled up in some cases, but guessing not in a regular expression?

[Melba23]

DrLarch,

Not according to my testing - the only characters that need to be "escaped" in a RegEx are:

\ . ^ $ | [ ( { * + ? #

and that involves a leading " \ ".

You may be thinking of the double brackets when you deal with POSIX classes as when they are used inside existing class brackets it leads to the following rather odd syntax:

[[:alnum:]]

M23