Mouse pointer movement and clicking using keyboard

To build a windows 32 app that sits on the system tray and that once installed runs always on start up unless the user changes that in the settings. When the app is running it listens to a global hook for the combination of keys Q and A and O and P. When these 4 keys/letters from the keyboard are hold for 2 secs (default, although that can be changed in settings for up to 10 secs) it enters its active mode and the mouse pointer can be controlled for any app/window using the keys Q to move up, A to move down , O to move left, and P to move right. You can also have intermediate diagonal directions when two keys are pressed, like Q and P moving NorthEast, etc. Holding again the 4 main keys for 2 secs or so it leaves the active mode and the keyboard can be used to type again, as normally. Also the mouse pointer after the end point of the screen shows on the opposite side of the screen - for this feature you can have a look at the code of the project named mousefree at sourceforge. Then the keys M and N are used to drag files and folders or just about anything you would drag with the mouse. Just click M to start dragging and N to release the drag. And the SPACE key would be working exactly as does the left key of the mouse. You could for that matter use it to double click or just single click. There is a similar app to this spec at tinyurl 3qccqa , that is, 3QCCQA, after the slash, on tinyurl website. That one needs Java to run and it is a bit crappy because the clicks don't work very well as it is implemented with an invisible window form that is always requesting the focus. The app you will do needs to perform better with the clicks as was told and must not disable the mouse from working. Also, another feature for this app would be that when holding the key to move down for a few screens spanning (this would be better explained if needed) it would scroll down the active window. So if the active window is a browser and you are holding the key A, moving the mouse pointer down, it would scroll down the page as if with PageDown key or with the mousewheel. It should be smart enought to move/scroll up and down the page in a clever and smooth way but that would be an extra. Ideally it would run in any win32 pc but if for some reason it would perform much better in Vista and/or laters we might consider just these.