pdfGetSelectedRegion
Get the selected region.
PDFRegionHandle pdfGetSelectedRegion(PDFViewerHandle viewer)
This function returns the handle of the currently selected region, or
NULL if no region is selected.
C:
PDFRegionHandle region;
region = pdfGetSelectedRegion(viewer);
if (region) {
/* do something with the region ... */
} else {
/* no region is currently selected ... */
}