Re: [Discuss-gnuradio] Formatter callback in QT QUI Label widget

[Marcus D. Leech]

On 03/11/2015 11:16 AM, Tom Rondeau wrote:

On Tue, Mar 10, 2015 at 8:26 PM, Marcus D. Leech <address@hidden> wrote:

Does the formatter callback work?  I can't get it to do anything useful, using a lambda _expression_ stuffed into a variable.  How does the widget calll the desired function?

Hmm, just tried this and it worked:

lambda x: "Value = {0} (put units here)".format(perform_function_on(x))

So the _expression_ returns a string.

Tom

I actually took a different approach last night that works.

I set the type of the label to string, and have an external variable that does the formatting I need, returning a string, and it is that string that is used in the Qt label.  No formatter callback required.