Macro to replace 'space' with underscore

[Ivan]

I would like to make a macro that upon pushing caps-lock replaces all space characters with underscores. It should stop replacing when either caps-lock is entered again or user pushes space bar.
Can someone give me some hints on this?

[Gintaras]

Replace as you type, or replace in already existing text?

[Ivan]

As I type. I want to avoid holding shift down while typing long class names (required to be all caps by my company's coding standard). Thanks.

[Gintaras]

Code:

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ifk K 1 ;;if CapsLock is toggled
,key "_"
else
,key V

Assign Spacebar trigger.

[Ivan]

Thanks, that worked great.

[ssimop]

It it possible to replace as you type in already existing text (overwrite). I am primarily interested when in QM Editor. The Numpad "ins" key does not work. I wonder whether there exists a shortcut - escape sequence to do it. Many thanks in advance.

[Gintaras]

Macro Macro2549

Code:

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SendMessage GetQmCodeEditor SCI.SCI_EDITTOGGLEOVERTYPE 0 0

[ssimop]

Many thanks, again. Best regards!