Qt: Run function when socket connection is active

Question

I am trying to open a pop-up window with information from a SQLite file when the file is updated through a socket connection.

How can I trigger a function call when there is activity on a specific socket? Or is there a better way to go about this problem?

Thank you in advance for any help. My knowledge of Qt signals is primitive at the moment.

How is the *SQLite file updated through a socket connection*? does the socket connection belong to your application? — Mike, Oct 15 '16 at 20:52

score 0 · Answer 1 · answered Oct 15 '16 at 22:48

0

Your question is not quite clear.

Do you control the Socket connection? If so why not add code to send a signal while updating SQL information?
If you do not own the socket then this is not possible. Maybe you want to add a trigger on the Database and use that to catch the moment the Database is being updated.

answered Oct 15 '16 at 22:48

Luca Angioloni

I do control the socket connection. I have two RPi3's communicating to each other and I want to trigger an action in the GUI when the pi receives information. Could you elaborate on the code to send to the Qt application? – r0ug3Pr0gRam3r Oct 18 '16 at 16:31
@r0ug3Pr0gRam3r well then when you receive bytes from socket ot better when you read bytes from socket you do what you want with graphics maybe emitting a signal connected to a slot of the view controller. – Luca Angioloni Oct 18 '16 at 18:00

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