Unity Script Reference:

EditorGUI.RectField

static function RectField(position: Rect, value: Rect): Rect;

static Rect RectField(Rect position, Rect value);

static def RectField(position as Rect, value as Rect) as Rect

static function RectField(position: Rect, label: string, value: Rect): Rect;

static Rect RectField(Rect position, string label, Rect value);

static def RectField(position as Rect, label as string, value as Rect) as Rect

static function RectField(position: Rect, label: GUIContent, value: Rect): Rect;

static Rect RectField(Rect position, GUIContent label, Rect value);

static def RectField(position as Rect, label as GUIContent, value as Rect) as Rect

Parameters

position	Rectangle on the screen to use for the field.
label	Optional label to display above the field.
value	The value to edit.

Returns
Rect The value entered by the user.

Description

Make an X, Y, W & H field for entering a Rect.

Rect field in an Editor Window.

	// Find all the cameras in the scene and shows all their viewports togheter
	
	class EditorGUIRectField extends EditorWindow {
		
		var cameras : Camera[];
		
		@MenuItem("Examples/Editor GUI RectField usage")
		static function Init() {
			var window = GetWindow(EditorGUIRectField);
			window.position = Rect(0,0,150,120);
			window.Show();
		}
		
		function OnGUI() {
			if(GUI.Button(Rect(3,3,position.width-6,20),"Update list"))	
				cameras = FindObjectsOfType(Camera);
			
			if(cameras)
			for(var i = 0; i < cameras.Length; i++) {
				cameras[i].rect = EditorGUI.RectField(
						Rect(3,25+45*i,position.width - 6, 25),
						cameras[i].name,
						cameras[i].rect);
			}
		}
	}

Description

Make an X, Y, W & H for Rect using SerializedProperty (not public).