Hook technology before learning to write small program, using the mouse hook ope...

代码说明：

以前学习hook技术写的小程序，采用hook鼠标操作，当鼠标左右键同时按下的时候自动将当前活动的窗口隐藏起来，再次按下鼠标的左右键的时候恢复隐藏的窗口。-Hook technology before learning to write small program, using the mouse hook operation, when the mouse around at the same time press the button when the current activities will automatically hide the window again by pressing the left and right mouse button when the restoration of a hidden window.