You could have a text box with a file open dialog, and the callback would 
lock/stop the flowgraph, give the returned file path string to a file_source 
block, and then unlock/start the flowgraph.

-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf 
Of M Dammer
Sent: Wednesday, November 20, 2013 10:12 AM
To: [email protected]
Subject: Re: [Discuss-gnuradio] GRC: File/Path browser in QT or WX gui ?

I was thinking about people who just load a flowgraph and start it. In this 
case it would be very convenient to have all parameters that need adjusting 
(including filepath) in the GUI.
greetings, Mark

On 20/11/13 15:07, Marcus Müller wrote:
> I think that would be possible; however, before you start coding it 
> yourself, please consider the use case:
> In most cases, things like "I want to read that file" are considered 
> before starting a flow graph.
>
> Greetings,
> Marcus
>
> On 20.11.2013 15:08, M Dammer wrote:
>> I am looking for a standard file browser widget for a QT or Wx based 
>> GUI. You browse the filesystem and the moment you click "o.k." the 
>> choosen path is put into a variable that can be used within your 
>> flowgraph. Is this possible ? Currently the only option I see is to 
>> set the filename/path within the flowgraph (e.g. WAV sinks/sources).
>> Mark
>>
>>
>>
>>
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