1.4 KiB
1.4 KiB
c | SPDX-License-Identifier | Title | Section | Source | See-also | ||
---|---|---|---|---|---|---|---|
Copyright (C) Daniel Stenberg, <daniel.se>, et al. | curl | CURLOPT_PROGRESSDATA | 3 | libcurl |
|
NAME
CURLOPT_PROGRESSDATA - 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 is 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
struct progress {
char *private;
size_t size;
};
static size_t progress_callback(void *clientp,
double dltotal,
double dlnow,
double ultotal,
double ulnow)
{
struct progress *memory = clientp;
printf("private: %p\n", memory->private);
/* use the values */
return 0; /* all is good */
}
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
struct progress data;
/* pass struct to callback */
curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, &data);
curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progress_callback);
curl_easy_perform(curl);
}
}
AVAILABILITY
Always
RETURN VALUE
Returns CURLE_OK