Tracking popup opening below the specified part of a control: Introduction Popup windows are everywhere. Each tooltip is a popup window; each combobox has its popup list; many advertisements are also shown in popup windows. How to Create a Popup Control in .NET? At first, we might choose the Form class as a base class for our popup control. Unfortunately, it is a bad choice because when we show ou
![Simple Popup Control](https://cdn-ak-scissors.b.st-hatena.com/image/square/40c7676385e731a984f147cf761e1f291cfa4204/height=288;version=1;width=512/https%3A%2F%2Fwww.codeproject.com%2FKB%2Fmiscctrl%2Fsimplepopup%2FThumbnail.png)