Contains a picture's filename used as a Screen's background. It can be any format supported by E3 on DrawPicture objects (*.bmp, *.gif, *.jpg, *.cur, *.ico, *.emf, *.wmf, *.png, and *.tif). Default value of this property is an empty String. This property is only valid if the FillStyle property is set to 12 - Picture.