GUILayout.Height

Description

Option passed to a control to give it an absolute height.

Note: This option will override the Automatic height Layout parameter


Fixed Height for a GUI Control.

    // Draws a  button with a  fixed height
    function OnGUI() {
        GUILayout.Button("A Button with fixed height", GUILayout.Height(300));
    }

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void OnGUI() {
        GUILayout.Button("A Button with fixed height", GUILayout.Height(300));
    }
}