redraw
Window redraw event.
[event]
redraw([in] LONG dc, [in] int left, [in] int top, [in] int right, [in] int bottom)
This event will be called whenever the XpdfViewer window (or a portion
of the window) needs to be redrawn. This can be used to draw
arbitrary content on top of the PDF file.
The arguments provide a DC and the region that is being redrawn.
VB:
Private Sub viewer_redraw(dc As Long, left As Long, top As Long, _
right As Long, bottom As Long) _
Handles viewer.redraw
' use Windows GDI functions here...
End Sub