Does your application have long context menus that get clipped inside small windows? First ask yourself is this the right user interface. If so then one solution is to add a vertical scroll bar automagically to the context menu. IntelliSense in Visual Studio uses a maximum size constant for the context menu to cope with the inordinate number of members on many classes (over 150 members on a Button): Another option, when screen space is at a premium and windows are small, is to peg the maximum size o[...]