Look at one of my previous answer:
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MFC: Thread Trouble to update GUI?
Hello Everybody, My application captures Ethernet packet and shows all packet data in the Listview control with report view. Right now i am doing it over the main thread of my dialog box. When I handle the GUI (Move or button click or combobox item selection) my packet capture loop which is in do while loop is disturbed (It getting stop).
I have structure which looks like
do
{
if( Catch _the_Packet() == true)
{
Show_Packet_Listview();
}
doev ents();
}while(Stop_cpature!= true);
Now I want to make this packet capture mechanism on the other thread and GUI updates or packet display on main thread.
Which threads should i use.? worker thread to capture packet or GUI thread ? How shpuld i handle the message to update packet listview when packet is captured,
Many Many Thanks in Adavance.
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Answers
Here you can find a sample:
http://www.devhood.com/tut
Another option that I've found simplifies things:
In the worker thread, read the packets and save them into a simple queue structure -- don't display anything.
Then in the GUI thread, create a window timer. At each timer tick, check to see which items have not been displayed and display them. The timer interval can be surprising large without causing the user to see jerking, etc. For instance, even 250ms (4 times a seconds) looks pretty smooth to the human eye.
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by: ZoppoPosted on 2009-03-11 at 03:10:23ID: 23855285
Hi SumitKalsait,
I would suggest to implement a worker thread to capture the packets, in this thread you can use SendMessage or SendThreadMessage with a self defined message ID to pass the data to be displayed to the main window or thread.
ZOPPO