How to fnd a dialog box size?

How do I find a dialog box's size?It is a dialog I design myself in a DCL file.I know that the screensize is stored in the SCREENSIZE variable. Is there another variable for this purpose I can use?When I make a dialog (my mistake) that is larger than the screensize, I get a warning, telling me the current size. This is the size I want to find.Svend