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GUIUtility.GetControlID

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public static int GetControlID(FocusType focus);
public static int GetControlID(FocusType focus, Rect position);

Description

Get a unique ID for a control.

using UnityEngine;

public class Example : MonoBehaviour
{
    // Prints a not used ID that can be assigned to a control

    void OnGUI()
    {
        // Gets a ID for a control that cannot receive keyboard focus (A button)
        Debug.Log("Available id: " + GUIUtility.GetControlID(FocusType.Passive));
    }
}
public static int GetControlID(int hint, FocusType focus);
public static int GetControlID(int hint, FocusType focusType, Rect rect);

Description

Get a unique ID for a control, using an integer as a hint to help ensure correct matching of IDs to controls.

public static int GetControlID(GUIContent contents, FocusType focus);
public static int GetControlID(GUIContent contents, FocusType focus, Rect position);

Description

Get a unique ID for a control, using a the label content as a hint to help ensure correct matching of IDs to controls.

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