Clear Win32 API error function and error code.
Clears any saved Win32 API error function and error code for this thread.

Typical usage is to call this function before calling some other Xpdf library function, and then if the library function returns an error, call getWin32ErrorFunc and getWin32ErrorCode to see if the error was caused by a Win32 API function failure.

Each thread has its own, independent saved error function and code.

This function is only available on Windows.

pdf.clearWin32ErrorInfo() Try ... pdf.printPDF4() ... Catch e func = pdf.getWin32ErrorFunc() code = pdf.getWin32ErrorCode() If func <> "" Then ' ... error was caused by [func] / [code] End If End Try