uninstall_keyhook
This function uninstalls a low level keyboard hook previously installed with the install_keyhook function.
bool uninstall_keyhook()
Parameters:
None.
Return value:
true if the keyboard hook was successfully uninstalled, false otherwise.
Remarks:
The program will automatically uninstall a keyhook on exit.
Example:

    // Install a keyhook and display a message saying that the Insert key has been pressed.

    void main()
    {
    show_game_window("Test Game");
    install_keyhook();
    while(true)
    {
    if(key_down(KEY_LMENU) && key_pressed(KEY_F4))
    {
    exit();
    }
    if(key_pressed(KEY_INSERT))
    {
    alert("Information", "The Insert key was successfully pressed.");
    }
    // Other code goes here.
    wait(5);
    }
    uninstall_keyhook();
    }