Winforms Balloon Tooltips
Windows forms tooltips implementation is severely broken when it comes to the balloon-shaped tooltip. The “BalloonToolTip” class does what the name implies: it implements the Balloon-shaped tooltips correctly.
On the right you can see how the balloon looks in the real application. By the way, yes I know my user doesn't give a damn to the dBm figure. I already have the CR entitled “convert signal strength from absolume dBm to relative %” on my list (low priority).
Download the demo project (C#, visual studio 2008).
You'll need to copy the “BalloonToolTip.cs” source file in your project to use my tooltips. Of course I did no custom drawing, the tooltip are just native Win32 tooltips. The API might be a bit more clear, though.
Here's the screenshot of the demo application: