81 lines
1.4 KiB
Markdown
81 lines
1.4 KiB
Markdown
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---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLOPT_PROGRESSDATA
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Section: 3
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Source: libcurl
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See-also:
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- CURLOPT_PROGRESSFUNCTION (3)
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- CURLOPT_XFERINFOFUNCTION (3)
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---
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# NAME
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CURLOPT_PROGRESSDATA - pointer passed to the progress callback
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROGRESSDATA, void *pointer);
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~~~
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# DESCRIPTION
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Pass a *pointer* that is untouched by libcurl and passed as the first
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argument in the progress callback set with CURLOPT_PROGRESSFUNCTION(3).
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# DEFAULT
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The default value of this parameter is NULL.
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# PROTOCOLS
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All
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# EXAMPLE
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~~~c
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struct progress {
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char *private;
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size_t size;
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};
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static size_t progress_callback(void *clientp,
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double dltotal,
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double dlnow,
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double ultotal,
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double ulnow)
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{
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struct progress *memory = clientp;
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printf("private: %p\n", memory->private);
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/* use the values */
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return 0; /* all is good */
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}
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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struct progress data;
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/* pass struct to callback */
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curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, &data);
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curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progress_callback);
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curl_easy_perform(curl);
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}
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}
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~~~
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# AVAILABILITY
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Always
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# RETURN VALUE
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Returns CURLE_OK
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