diff options
Diffstat (limited to 'gr-qtgui/include/gnuradio/qtgui/freq_sink_c.h')
| -rw-r--r-- | gr-qtgui/include/gnuradio/qtgui/freq_sink_c.h | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/gr-qtgui/include/gnuradio/qtgui/freq_sink_c.h b/gr-qtgui/include/gnuradio/qtgui/freq_sink_c.h index fcbfd72ec3..d02505c6f6 100644 --- a/gr-qtgui/include/gnuradio/qtgui/freq_sink_c.h +++ b/gr-qtgui/include/gnuradio/qtgui/freq_sink_c.h @@ -1,6 +1,6 @@ /* -*- c++ -*- */ /* - * Copyright 2012 Free Software Foundation, Inc. + * Copyright 2012,2014 Free Software Foundation, Inc. * * This file is part of GNU Radio * @@ -46,6 +46,25 @@ namespace gr { * different color, and the \a set_title and \a set_color * functions can be used to change the lable and color for a given * input number. + * + * Message Ports: + * + * - freq (input): + * Receives a PMT pair: (intern("freq"), double(frequency). + * This is used to retune the center frequency of the + * display's x-axis. + * + * - freq (output): + * Produces a PMT pair with (intern("freq"), double(frequency). + * When a user double-clicks on the display, the block + * produces and emits a message containing the frequency of + * where on the x-axis the user clicked. This value can be + * used by other blocks to update their frequency setting. + * + * To perform click-to-tune behavior, this output 'freq' + * port can be redirected to this block's input 'freq' port + * to catch the message and update the center frequency of + * the display. */ class QTGUI_API freq_sink_c : virtual public sync_block { @@ -112,6 +131,8 @@ namespace gr { virtual void enable_menu(bool en=true) = 0; virtual void enable_grid(bool en=true) = 0; virtual void enable_autoscale(bool en=true) = 0; + virtual void clear_max_hold() = 0; + virtual void clear_min_hold() = 0; virtual void reset() = 0; QApplication *d_qApplication; |