GDI+是对GDI的一个令人兴奋的扩展，但由于某些原因，它没有提供绘制圆角矩形的函数，虽然我们可以在GDI+中使用GDI中的函数，但这样一来我们没办法在圆角矩形中使用GDI+中的纹理和透明色等新特性。怎么办？GDI+中有一个GraphicsPath 的类，我们可以用它构造各种形状并且可用任何画刷来填充这些形状。本源码中提供了一个可以加到任何工程中的函数，并用它来绘制了一个圆角矩形，矩形的远郊程度可以通过一个滑动条来设置，-GDI+ Is GDI s an exciting expansion, but for some reason, it failed to provide rounded rectangle drawing function, although we can GDI+ Of the use of GDI function, but this way we could find no way in rounded rectangle using GDI+ in texture and transparent colors, such as new features. How do? GDI+ There is a GraphicsPath class, we can use it to construct a variety of shapes and paint brush can be used to fill any of these shapes. The source code is provided in a project can be added to any function, and use it to draw a rounded rectangle, rectangular outer extent through a slider to set up,