GUISettings.cursorFlashSpeed

Description

The speed of text field cursor flashes.

This is how many flashes / second. If you set it to 0, flashing will be disabled. If you set it to -1, the flashing speed will match the system default of the end user.

using UnityEngine;

public class Example : MonoBehaviour
{
    string str = "This is a string with \n two lines of text";

    void OnGUI()
    {
        GUI.skin.settings.cursorFlashSpeed = 3;
        str = GUILayout.TextArea(str);
    }
}