How do I make system call to post "scanning..." ?

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hcitool

If this yet another case of cout /cerr not synchronizing with code flow - PLEASE IGNORE my post.

When I use "hcitool scan" as CLI it outputs "Scanning..." immediately , then after expected delay outputs the scan result.


Scanning ...
98:D3:31:F8:39:33 SPP-CA


When implementing hcitool as system call

system("hcitool scan");

the outputs are NOT separated - in time - they are posted to console AFTER the actual scan is completed.

Is there a way to option system call to hcitool scan to output the "progress message" ?

What I have tried:

I have used Qt bluetooth scanning code and it does not do the job, hence I am replacing it with system calls. It would be nice to catch the "Scanning..." signal / event somehow. Qt does have that option.