Thank you Martin for your answer:

I'm not working with a menu,

the firsts lines of my code does the follow:

_application.visible = .f.
Set Sysmenu to
SET SYSMENU OFF
Set Sysmenu to
SET SKIP OF MENU _MSYSMENU .t. (your sugestion)

and then I run a form, As top level form, and the ctrl+c work allways ?

any idea ?

Thanks

>>Does any know how to prevent copy the selection to clipboard using Ctrl+C.
>>
>>My question is how could i disable the Ctrl+C shortcut
>
>Hola, Guillermo.
>
>Just disable the shortcut from your menu, or even the menu option, if you don't want the user to copy at all.