pdfSetRegionChangedCbk
Set a callback function for region changes.
void pdfSetRegionChangedCbk(PDFViewerHandle viewer,
void (*cbk)(void *data, PDFRegionHandle region),
void *data)
This function sets a callback which will be called when the user
moves or resizes a highlighted region.
The function will be called with two arguments:
data
: the value of thedata
argument that was passed topdfSetRegionSelectedCbk
region
: the handle for the changed region
C:
void regionChangedCbk(void *data, PDFRegionHandle region) {
/* a region has been resized ... */
}
....
pdfSetRegionChangedCbk(viewer, ®ionChangedCbk, NULL);