83 lines
2.4 KiB
Groff
83 lines
2.4 KiB
Groff
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.\" **************************************************************************
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.\" * _ _ ____ _
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.\" * Project ___| | | | _ \| |
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.\" * / __| | | | |_) | |
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.\" * | (__| |_| | _ <| |___
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.\" * \___|\___/|_| \_\_____|
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.\" *
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.\" * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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.\" *
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.\" * This software is licensed as described in the file COPYING, which
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.\" * you should have received as part of this distribution. The terms
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.\" * are also available at https://curl.se/docs/copyright.html.
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.\" *
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.\" * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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.\" * copies of the Software, and permit persons to whom the Software is
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.\" * furnished to do so, under the terms of the COPYING file.
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.\" *
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.\" * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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.\" * KIND, either express or implied.
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.\" *
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.\" * SPDX-License-Identifier: curl
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.\" *
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.\" **************************************************************************
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.\"
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.TH CURLOPT_PROGRESSDATA 3 "17 Jun 2014" libcurl libcurl
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.SH NAME
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CURLOPT_PROGRESSDATA \- pointer passed to the progress callback
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.SH SYNOPSIS
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.nf
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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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.fi
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.SH DESCRIPTION
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Pass a \fIpointer\fP that is untouched by libcurl and passed as the first
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argument in the progress callback set with \fICURLOPT_PROGRESSFUNCTION(3)\fP.
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.SH DEFAULT
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The default value of this parameter is NULL.
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.SH PROTOCOLS
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All
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.SH EXAMPLE
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.nf
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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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.fi
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.SH AVAILABILITY
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Always
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.SH RETURN VALUE
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Returns CURLE_OK
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.SH "SEE ALSO"
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.BR CURLOPT_PROGRESSFUNCTION (3),
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.BR CURLOPT_XFERINFOFUNCTION (3)
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