As we all know, if the icon for a wpf window is undefined then the default icon is displayed. I want to display a window without any icon in the title bar. I realise that I
While not exactly a proper solution, you could try one of the following things:
Setting the WindowStyle-Property to ToolWindow will make the Icon disappear, but the title bar (obviously) will be smaller.
Write a ControlTemplate for the whole Window. Depending on if the Window has to look like a "real" Window, there'd be much effort into trying to recreate the default Style in the Template.