CURLOPT_PROGRESSDATA (3) - Linux Manuals
CURLOPT_PROGRESSDATA: custom pointer passed to the progress callback
Command to display CURLOPT_PROGRESSDATA manual in Linux: $ man 3 CURLOPT_PROGRESSDATA
NAME
CURLOPT_PROGRESSDATA - custom pointer passed to the progress callback
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROGRESSDATA, void *pointer);
DESCRIPTION
Pass a
pointer that will be untouched by libcurl and passed as the first
argument in the progress callback set with
CURLOPT_PROGRESSFUNCTION(3).
DEFAULT
The default value of this parameter is NULL.
PROTOCOLS
All
EXAMPLE
http://curl.haxx.se/libcurl/c/progressfunc.html
AVAILABILITY
Always
RETURN VALUE
Returns CURLE_OK
Pages related to CURLOPT_PROGRESSDATA