VC最小化后托盘显示图标及右键菜单，本托盘图标菜单运用了自绘技术，把右键菜单的最左部分渲染为键盘色，类似于XP的开始菜单-VC Minimize tray icon and right-click menu of the tray icon menu to use the self-painted technologies, rendering the left-most part of the right-click menu for the keyboard color, similar t