Console Commands via Weapon

[Codexofwisdom]

I've spent the last hour Googling this, but can't find anything anywhere.
How would I go about telling a weapon to execute a console command instead of firing a bullet? Specifically, I want to create a camera, like Garry's Mod has, that will take a screenshot when you click.
Does this need to be edited in the weapon's .cpp, or the script? Or will I need to create a whole new weapon type?

[Alters]

It should be pretty easy. In a weapon's PrimaryAttack function (in the cpp file) simply remove everything weapon related and instead put:

CBasePlayer *pPlayer = ToBasePlayer( GetOwner() );
if ( pPlayer )
{
engine->ClientCommand( pPlayer->edict(), "WhateverTheScreenshotCmdIs\n" );
}