[Dialog屏幕开发] 屏幕绘制(下拉菜单)

阅读该篇文章之前，可先阅读下述资料

[Dialog屏幕开发] Table Control 列数据操作https://blog.youkuaiyun.com/Hudas/article/details/145343731?spm=1001.2014.3001.5501https://blog.youkuaiyun.com/Hudas/article/details/145343731?spm=1001.2014.3001.5501https://blog.youkuaiyun.com/Hudas/article/details/145343731?spm=1001.2014.3001.5501上篇文章我们的屏幕已实现了如下功能