listbox水平滚动条 一般listbox只有垂直滚动条，此代码能让listbox能使用水平滚动条-listbox horizontal scroll bar in general listbox only the vertical scroll bar, the code allows listbox can use the horizontal scroll bar

在列表框中使用水平滚动条的例子-A example which uses horizontal scroll bar in the listbox

通过重载CListBoxt完成自己的listbox重载，支持更改背景颜色、字体颜色；并支持横向滚动条；而且支持滑轮滚动-Through heavy-duty CListBoxt complete its listbox overloaded to support the change the background color, font color and support the horizontal scroll bar and support for scroll wheels