QT GUI Range

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This block creates a variable with a choice of widgets. The ID will be the variable name, so that ID can be used as a parameter in another block to make it adjustable in real-time.

Leave the label blank to use the variable id as the label.

This block does not support C++ output, so it cannot be used when the output language of a flowgraph in GRC is C++.

Parameters

Default Value
The default value must be between the start and stop values.
Start
Stop
Step
Widget
  • Counter + Slider
  • Counter
  • Slider
  • Knob

See GUI Hint for how to position the GUI within a window.

Example Flowgraph

The following flowgraph has three QT GUI Range blocks for the variables 'volume', 'tuning', and 'sq_lvl'.

FunCube 2 meter NB FM fg.png

The run-time window shows the three QT GUI Range widgets.

FunCube 2 meter NB FM out.png