For Ideology in Friction and many other games with the older RPGM engine you can use F5 to resize the window size, or Alt+Enter to go fullscreen. I noticed you have to use left Alt for that one.
You can also press F1 and select "Launch in Full Screen"
I usually stick with resizing the window, since it stretches in full screen and messes up my resolution.
If F5 isn't working in some games to resize, use
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Unless it's RPGM MV there is usually no mouse support and I don't know of a workaround for that. I just use a Ducky Pocket numpad with programmable buttons with one profile optimized for RPGM games. So the idea of mouse control went out of the window a long time ago.