MouseOver for multiple GUILayout.Buttons?

Questions & Answers
1

I'm trying to make a button wrapper class that easily allows for mouseover detection. I it working for regular GUI.Buttons, but now I'd like to make it compatible with GUILayout.Buttons, as well. The problem is that I don't have direct access to the Rect of a GUILayout.Button.

I understand that I can use GUILayoutUtility.GetLastRect to get the last drawn rectangle, but doesn't this mean that I can only do one button at a time? I don't understand how I would go about referencing the rects of multiple buttons this way.

2

You can use GetLastRect to find the area of a group of controls if the controls are wrapped in Begin/EndVertical or Begin/EndHorizontal, like so:

void OnGUI()
{
    GUILayout.BeginVertical();
        GUILayout.Button("First");
        GUILayout.Button("Second");
        GUILayout.Button("Third");
    GUILayout.EndVertical();

    if(Event.current.type == EventType.Repaint && 
       GUILayoutUtility.GetLastRect().Contains(Event.current.mousePosition ))
    {
        GUILayout.Label( "Mouse over!" );
    }
    else
    {
        GUILayout.Label( "Mouse somewhere else" );
    }
}

Alternatively you could use GUILayout.BeginArea to confine the auto-layout to a fixed area of the screen that you control.