Input.GetMouseButtonUp

Description

Returns true during the frame the user releases the given mouse button.

Note: This API is part of the legacy Input class, and not recommended for new projects. The documentation is provided here to support legacy projects that use the old Input Manager and Input class. For new projects you should use the newer and Input System Package. (read more).

Call this function from the MonoBehaviour.Update function, since the state gets reset each frame. It will not return true until the user has pressed the mouse button and released it again. button values are 0 for left button, 1 for right button, 2 for the middle button.

using UnityEngine;

public class Example : MonoBehaviour
{
    // Detects clicks from the mouse and prints a message
    // depending on the click detected.

    void Update()
    {
        if (Input.GetMouseButtonUp(0))
        {
            Debug.Log("Pressed left click.");
        }
        if (Input.GetMouseButtonUp(1))
        {
            Debug.Log("Pressed right click.");
        }
        if (Input.GetMouseButtonUp(2))
        {
            Debug.Log("Pressed middle click.");
        }
    }
}