Defining dialog properties
A window or dialog provides a (usually) movable frame for a control. While the control referenced in the window definition defines the dialog content, the dialog itself defines the the frame and its behavior. Window properties are accessible when selecting the window in the class list and choosing the property view (Property tab bottom of the workspace).
In order to define windows resource (ADK_Window) properties, the Definition tab has to be activated. The Text Definitions tab has to be activated. When a context class has been assigned to the window, the context class can be edited when selecting the Context Class tab on bottom of the work area.
Details of the window resource definition are described in Window resource.