重绘SSTab控件2.0，老代码重构，加入了脏区域处理，无窗口控件重绘，UpDown控制按钮，修复GDI句柄泄露的BUG；-Redraw SSTab controls 2.0, old code refactoring, joined the dirty area treatment, no window control to redraw, UpDown control button, repair the GDI handle leak BUG