Need help developing / programming a simple productivity tool for Windows

General information for the business: A simple productivity tool that shows a customization alternate desktop' layered over the current desktop when a hotkey is pressed

Kind of development: New program from scratch

Description of every module:

- It’s a productivity tool in the form of a windows executable, and very simple; bit like Steam overlay of in-game messenger / browser function but for windows desktop.

- It allows a user to multitask better on Windows by showing a ‘second desktop’ that is layered over the first desktop, and only visible when holding a hotkey (Shift + tab). Users can ‘snap’ windows to the layer (such as a Skype chat window, word document, or browser window) so that they can easily toggle between two different desktops.

- Description of requirements/functionality: Runs passively in the background unless activated via hotkey

- Hold Shift and tab at the same time to view the layer temporarily

- To make the layer stay visible, click on any window in the layer, or on the layer itself, whilst the layer is visible (ie. while holding shift and tab). To make invisible, press the hotkey or click any window outside of the layer (if not maximized)

- Add windows to layer: While mouse click is held down on any window (as if to drag it around the screen), holding Shift and tab for 1 second will ‘snap’ the window into the layer and display the layer view and a quiet click can be heard

- Remove window from layer: Closing a window in the layer closes the window completely

- Icon: small icon in taskbar (next to wi-fi, etc) that shows ‘close’ and ‘about’ – clicking about shows smiley face :)

A better overview found attached below.

OS requirements: Windows 8 & 7