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:

page = page number
x0, y0 = upper-left corner of region
x1, y1 = lower-right corner of region
dpi = resolution (dots per inch)
color = color setting - one of:
- imageMono: 1-bit monochrome
- imageGray: 8-bit grayscale
- imageRGB: 8-bit RGB
- imageDevNToRGB: 8-bit RGB, rasterized in DeviceN and then converted to RGB
- imageGrayToMono: 1-bit monochrome, rasterized in 8-bit grayscale and then converted to 1-bit

Note that the color settings are read-only properties on the XpdfViewer control, so you'll need to use viewer.imageMono, etc.

VB:

' 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