pdfGetFileNameW
Get the file name of the currently open PDF file.
wchar_t *pdfGetFileNameW(PDFViewerHandle viewer)
This function returns the name of the currently displayed PDF file.
This function is identical to pdfGetFileName, except that it
returns a Unicode string.
The returned string should not be modified or freed.
C:
wchar_t *name;
name = pdfGetFileNameW(viewer);