自定义透明控件的难题

一篇文档，讨论了开发底色透明的UserControl遇到的问题及解决方案，以及VB编写透明控件的局限性，有一定的参考价值。-Custom transparent control problems a document, discussed the background transparent UserControl development problems and solutions, as well as the limitations of transparent controls written in VB, there is some reference value.