pdfSetMouseDoubleClickWinCbk
Set a callback function for mouse button double-click events with window coordinates.
void pdfSetMouseDoubleClickWinCbk(PDFViewerHandle viewer,
void (*cbk)(void *data, int button, int shift,
int winX, int winY),
void *data)
This function sets a callback which will be called when the user
double-clicks a mouse button.
The function will be called with six arguments:
data: the value of thedataargument that was passed topdfSetMouseDoubleClickCbkbutton: 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
pdfConvertWindowToPDFCoords2.
This callback is similar to pdfSetMouseDoubleClickCbk, except that
(a) it is called with window coordinates instead of PDF coordinates,
and (b) it will be called even if the mouse is clicked outside of a
PDF page.
C:
void mouseDoubleClickWinCbk(void *data, int button, int shift,
int winX, int winY) {
Context *myContext = (Context *)data;
int pg;
double x, y;
pdfConvertWindowToPDFCoords2(viewer, winX, winY, &pg, &x, &y);
/* ... use pg, x, y ... */
}
....
pdfSetMouseDoubleClickWinCbk(viewer, &mouseDoubleClickCbk, &myContext);