I'm currently working on a project involving serial communication between the G4P GUI builder and an Arduino Uno set. I'm new to both languages and would like some help.

Objective:

I am trying to make a GUI that resembles a typical Powerpoint slideshow- the user presses a physical pushbutton on the Arduino which causes the GUI to transition from one window to the next, much like how a clicker functions in a slideshow presentation. 

What I've managed so far

So far, I've been able to establish serial communication between my Arduino and the G4P. I've tried using the "window1.setVisible(false)" method in response to input from the Arduino push button. Sharing my codes below:

Main Sketch Tab

GUI Tab

The result: Window 1 appears when I press the button, but it stays as long as the button is held. Not the effect I was aiming for.

Questions

1. How do I achieve the 'slide-transition' effect?
2. Is there a way to improve on my serial communication with the Arduino?
3. I would like to code for more complicated responses with reference to the Arduino button. How can I go about coding these? For instance,
• Cause the window transition only if user presses and holds the button for 10 secs 
• Cause the window transition only if user presses the button 5 times consecutively