I have a GNU radio flow graph with a custom data source and I'd like to be able to change the bandwidth displayed on the QT GUI Frequency Sink block dynamically. Is there a way to do this programmatically? The QT GUI Frequency Sink block has a message port for programmatic changes to frequency, but I don't see an equivalent means for changing bandwidth. Is there a way for an OOT block to get a reference to another block to call a public member function?
Jason
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