Using QThread , Signal() , Slot() So GUI won't freeze
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Yes,
signals: void update_gui(QString packetInfoQString); };The issue is here : pcap_loop got call back function named packet_handle - this function emit update_gui
but the problem here that pcap_loop requires static function , while packet_handle can't be static function
try to run the project that's very short code
@__d4ve__ said in Using QThread , Signal() , Slot() So GUI won't freeze:
signals:
void update_gui(QString packetInfoQString);
};Where is this signal defined?
In the code snippet you've posted here, you have a function called
(I dont know if this is still your current code...)void workerobject::packet_looper() { .... }so one can assume it's a part of your
workerobject.cppfile.
Above that code there isvoid packet_handler(u_char* user_data, const struct pcap_pkthdr* packet_header, const u_char* packet_data) { // ..... emit update_gui(packetInfoQString); }Are you aware that
packet_handlerwhen written like that, is not a member of any class? It's defined as global function and there it probably wont recognize whatupdate_guiis.
The same applies, when trying to emit that signal from somewhere else other than where it was defined.
If debugging is the process of removing software bugs, then programming must be the process of putting them in.
~E. W. Dijkstra
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@__d4ve__ said in Using QThread , Signal() , Slot() So GUI won't freeze:
signals:
void update_gui(QString packetInfoQString);
};Where is this signal defined?
In the code snippet you've posted here, you have a function called
(I dont know if this is still your current code...)void workerobject::packet_looper() { .... }so one can assume it's a part of your
workerobject.cppfile.
Above that code there isvoid packet_handler(u_char* user_data, const struct pcap_pkthdr* packet_header, const u_char* packet_data) { // ..... emit update_gui(packetInfoQString); }Are you aware that
packet_handlerwhen written like that, is not a member of any class? It's defined as global function and there it probably wont recognize whatupdate_guiis.
The same applies, when trying to emit that signal from somewhere else other than where it was defined.To add to my fellows, it's typically a good case for the use of invokeMethod.
