Hi, You are correct. The Microsoft PropertyGrid only allows a simple textbox, a textbox + button, or a textbox + dropdown button as inplace editors. Therefore you have 2 solutions: 1. Either host your trackbar in the dropdown window appearing when you click the dropdown button. You will need a UITypeEditor for that. 2. Or use a third party PropertyGrid like Smart PropertyGrid which allows many more types of inplace controls, the trackbar being one of them. Best regards, Nicolas Cadilhac @ VisualHint Smart PropertyGrid.Net Microsoft PropertyGrid Resource List Free PropertyGrid for MFC Smart FieldPackEditor.Net / DateTimePicker