aboutsummaryrefslogtreecommitdiff
path: root/docs/FAQ
diff options
context:
space:
mode:
authorDaniel Stenberg <daniel@haxx.se>2008-09-24 07:39:42 +0000
committerDaniel Stenberg <daniel@haxx.se>2008-09-24 07:39:42 +0000
commit22059858fe21655263ebb217bbe0561806d7a95f (patch)
tree0ed3957e7d98ced169cac92f6c625528bed7c1a0 /docs/FAQ
parent82107a02f5eb97087b58ac1f932f068ec685d150 (diff)
Added "5.14 Using C++ non-static functions for callbacks?"
Diffstat (limited to 'docs/FAQ')
-rw-r--r--docs/FAQ21
1 files changed, 20 insertions, 1 deletions
diff --git a/docs/FAQ b/docs/FAQ
index da4a6c7df..90713ad4a 100644
--- a/docs/FAQ
+++ b/docs/FAQ
@@ -1,4 +1,4 @@
-Updated: Feb 18, 2008 (http://curl.haxx.se/docs/faq.html)
+Updated: Sep 24, 2008 (http://curl.haxx.se/docs/faq.html)
_ _ ____ _
___| | | | _ \| |
/ __| | | | |_) | |
@@ -85,6 +85,7 @@ FAQ
5.11 How do I make libcurl not receive the whole HTTP response?
5.12 Can I make libcurl fake or hide my real IP address?
5.13 How do I stop an ongoing transfer?
+ 5.14 Using C++ non-static functions for callbacks?
6. License Issues
6.1 I have a GPL program, can I use the libcurl library?
@@ -1070,6 +1071,24 @@ FAQ
If you're using the multi interface, you also stop a transfer by removing
the particular easy handle from the multi stack.
+ 5.14 Using C++ non-static functions for callbacks?
+
+ libcurl is a C library, it doesn't know anything about C++ member functions.
+
+ You can overcome this "limitation" with a relative ease using a static
+ member function that is passed a pointer to the class:
+
+ // f is the pointer to your object.
+ static YourClass::staticFunction(void *buffer, size_t sz, size_t n, void *f)
+ {
+ // Call non-static member function.
+ static_cast<YourClass*>(f)->nonStaticFunction();
+ }
+
+ // This is how you pass pointer to the static function:
+ curl_easy_setopt(hcurl, CURLOPT_WRITEFUNCTION, YourClass:staticFunction);
+ curl_easy_setopt(hcurl, CURLOPT_WRITEDATA, this);
+
6. License Issues
Curl and libcurl are released under a MIT/X derivate license. The license is