convertRegionToPicture2

Convert a rectangular region to a Picture object.
convertRegionToPicture2([in] int page, [in] double x0, [in] double y0, [in] double x1, [in] double y1, [in] double dpi, [in] int color, [out, retval] IUnknown **pic)
This function converts a rectangular region of a PDF page to a Picture object (OLE IPicture interface).

The rectangular region is specified by the x,y coordinates of its upper-left and lower-right corners (in PDF coordinates).

The arguments are:

Note that the color settings are read-only properties on the XpdfViewer control, so you'll need to use viewer.imageMono, etc.
VB6:
' convert the bottom-left corner of page 5 to a 72 dpi color Picture object picBox.Picture = viewer.convertRegionToPicture(5, 0, 0, 144, 144, 72, viewer.imageRGB)
convertPageToPicture2
convertPageToBMP2
convertRegionToBMP2
imageMono
imageGray
imageRGB