pdfSetMouseUpCbk
Set a callback function for mouse button-up events.
void pdfSetMouseUpCbk(PDFViewerHandle viewer,
void (*cbk)(void *data, int button, int shift,
int page, double x, double y),
void *data)
This function sets a callback which will be called when the user
releases a mouse button.
The function will be called with six arguments:
data: the value of thedataargument that was passed topdfSetMouseUpCbkbutton: the mouse button number - one ofpdfLeftButton,pdfMiddleButton, orpdfRightButtonshift: the shift/control/alt bit mask, which contains zero or more bit flags frompdfShiftKey,pdfCtrlKey, andpdfAltKeypage: the page number where the mouse button was clickedx, y: the position where the mouse button was clicked, in PDF coordinates
C:
void mouseUpCbk(void *data, int button, int shift,
int page, double x, double y) {
Context *myContext = (Context *)data;
/* a mouse button was released ... */
}
....
pdfSetMouseUpCbk(viewer, &mouseUpCbk, &myContext);