Force Window Mode?

I was just wondering if it were possible to force an external program (mostly games) into window mode. If possible, could you attach some sort of code?

Thanks in advance.

Welcome to the forums. :wave:

Are these DOS based games that you want to display in a Window?

Thanks.

Basically all types of games.

Let me give you some examples:
CounterStrike
Half Life

Those use DirectX, and therefore making them appear in a window (unless they explicitly give you the option) will be very hard and unreliable.. if it is possible at all.