Access clicked button from the different function

Hi, I already made

GUI.Button and GUI.Box

function on the different class and whenever I want to call the GUI, I just call the class and pass the parameter needed. Right now, the GUI are shown on the screen, but I could not think about how to make the GUI clicked. I mean, whenever I clicked the GUI, maybe something like

Debug.Log("You have clicked this button");

show on the Unity Console.

Here is the class code that I am using to store the GUI.Box and GUI.Button:

 public class UserInformation{
         public static GUIContent text, informationText, tooltipText; // For the content
         public static GUIStyle style, informationStyle, tooltipStyle; // For the style
         public static Rect rect, informationRect, tooltipRect; // For the position
     
     public static void SetGUI(string content, int id, int minusWith)
         {
             // Switch with the parameter id
     
             switch(id)
             {
                     // If user selects 1 for the id, this case for the gold
                 case 1:
     
                     // Set the content, the style and the size of the box would be to the GUI.Box
                     //SetStyle(id);
     
                     // Set the GUIContent as the tooltip
                     text = new GUIContent(content);
     
                     // The GUILayoutUtility is useful because it is to fit the content
                     rect = GUILayoutUtility.GetRect(text, style);
     
                     // Set where the Rect have to be displayed
                     rect.x = Screen.width - rect.width;
                     rect.y = rect.height;
     
                     // Show the GUI as the box
                     GUI.Box(rect, text, style);
     
                     // Break it
                     break;
     
                     // If user selects 2 for the id, this case for the button
                 case 2:
     
                     // Set the content, the style and the size of the box would be to the GUI.Button
                     //SetStyle(id);
     
                     // Set the GUIContent as the tooltip
                     text = new GUIContent(content);
     
                     // The GUILayoutUtility is useful because it is to fit the content
                     rect = new Rect(0, 0, 150, 20);
     
                     // Set where the Rect have to be displayed
                     rect.x = 5;
                     rect.y = Screen.height - minusWith;
     
                     // Show the GUI as the button
                     GUI.Button(rect, text, style);
     
                     // Break it
                     break;
     
                     // If user selects 3 for the id, this case for the information
                 case 3:
     
                     // Set the content, the style and the size of the box would be to the GUI.Box
                     //SetStyle(id);
     
                     // Set the GUIContent as the tooltip
                     informationText = new GUIContent(content);
     
                     // Set the Rect
                     informationRect = new Rect(0, 0, 400, 225);
     
                     // Set where the Rect have to be displayed
                     informationRect.x = 0;
                     informationRect.y = (Screen.height / 10) - 50;
     
                     // Show the GUI as the box
                     GUI.Box(informationRect, informationText, informationStyle);
     
                     // Break it
                     break;
     
                     // If user selects 4 for the id, this case for the tooltip
                 case 4:
     
                     // Set the content, the style and the size of the box would be to the GUI.Box
                     //SetStyle(id);
     
                     // Set the GUIContent as the tooltip
                     tooltipText = new GUIContent(content);
     
                     // Set the Rect
                     tooltipRect = GUILayoutUtility.GetRect(tooltipText, tooltipStyle);
     
                     // Set where the Rect have to be displayed
                     tooltipRect.x = Screen.width - tooltipRect.width;
                     tooltipRect.y = Screen.height - tooltipRect.height;
     
                     // Show the GUI as the box
                     GUI.Box(tooltipRect, tooltipText, tooltipStyle);
     
                     // Break it
                     break;
     
     
                     // If user selects either 1, 2, 3 or 4 for the id
                 default:
     
                     // Show the error
                     Debug.LogError("You must choose between 1, 2, 3, or 4 only for the GUI!");
     
                     // Break it
                     break;
             }
     
             // End of switch
     
         } 
 }

, but this time, whenever I want to check whether the button has been clicked by doing this code: (this is just an example of many GUI that has been shown on the screen)

 if (UserInformation.SetGUI("Show Information", 2, Screen.height - 10))

it says that

cannot convert type void to bool

Basically, I want to check if the button have been clicked or not clicked yet.

Your answer much appreciated.

Thank you