showBorder

Show/hide a "sunken" window border.
[read/write property] showBorder([out, retval] VARIANT_BOOL *show) showBorder([in] VARIANT_BOOL show)
This property shows (if set to true) or hides (if set to false) a "sunken" border around the XpdfViewer window. The border is shown by default.
VB6:
viewer.showBorder = False