pdfSetAbortCheckCbk
Set the abort-check callback.
void pdfSetAbortCheckCbk(PDFHandle pdf, int (*cbk)(void *data), void *cbkData)
This function sets a callback which will be called periodically during
rasterization.
If, at any point, the abort check callback returns true (non-zero), the rasterization will be aborted, and the rasterization function will return.
The cbkData argument is passed to the callback function.
C:
int abortCheck(void *data) {
if (... some abort condition ...) {
return 1;
}
return 0;
}
...
pdfSetAbortCheckCbk(pdf, &abortCheck, data);
// The abortCheck function will be called periodically while
// pdfWritePageBitmap is running. If abortCheck returns 1,
// then writePageBitmap will return immediately.
pdfWritePageBitmap(...);