What to use to recognize mouse clicks in Unity?

Question

C++ / C#

Since the System.Windows.Forms library is disabled in Unity, then what should be used to recognize mouse clicks / hold downs?
Input.GetMouseButton is not working, because it requires the button to be pressed.

Answer 1

Clamping is a click in essence. Pressing the mouse button 1 game tick will be regarded as a click by the system. Input.GetMouseButtonDown(key) when pressed, will process the event 1 time, if my memory serves me right, there will be no repetitions of each game tick.

Answer 2

So use GetButtonDown/GetButtonUp

Answer 3

Input.GetMouseButtonDown