P: zoom and use lasso at the same time

Jnox,

How are you trying to zoom while using the lasso tools? Are you trying to use the mouse wheel?

Jnox.

If you're using the Polygonal or Magnetic Lasso Tool, you can use the keyboard shortcut to zoom (Command-Spacebar-Click on a Mac, CTRL-Spacebar-Click on Windows) without disrupting the selection.

However, if you're using the freehand Lasso Tool, your selection will automatically complete when you try to use the shortcut, or any other tool. In that case, you can "Add to Selection" after you zoom. Either hold down Shift, or select the second button on the options bar at the top.

Hopefully this makes sense to you.

Translated: The idea is to simultaneously use the zoom function and lasso tools.

Ok, we need more information on what you're trying to do.