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annotate examples/code/unwinddemo.cc @ 20454:0bb456e9423b stable

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Allow interactive annotations in other figures than the currentfigure. * Canvas.cc (Canvas::canvasMouseReleaseEvent): prepend the figure handle argument when calling annotation function.
author Pantxo Diribarne <pantxo.diribarne@gmail.com>
date Tue, 02 Jun 2015 19:24:44 +0200
parents 95c533ed464b
children 2f8500ca91d3
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1 #include <octave/oct.h>
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2 #include <octave/unwind-prot.h>
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3
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4 void
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5 my_err_handler (const char *fmt, ...)
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6 {
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7 // Do nothing!!
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8 }
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9
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10 void
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11 my_err_with_id_handler (const char *id, const char *fmt, ...)
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12 {
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13 // Do nothing!!
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14 }
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16 DEFUN_DLD (unwinddemo, args, nargout, "Unwind Demo")
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17 {
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18 octave_value retval;
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19 int nargin = args.length ();
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20
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21 if (nargin < 2)
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22 print_usage ();
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23 else
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24 {
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25 NDArray a = args(0).array_value ();
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26 NDArray b = args(1).array_value ();
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27
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28 if (! error_state)
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29 {
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30 // Declare unwind_protect frame which lasts as long as
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31 // the variable frame has scope.
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32 unwind_protect frame;
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33 frame.add_fcn (set_liboctave_warning_handler,
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34 current_liboctave_warning_handler);
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35
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36 frame.add_fcn (set_liboctave_warning_with_id_handler,
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37 current_liboctave_warning_with_id_handler);
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38
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39 set_liboctave_warning_handler (my_err_handler);
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40 set_liboctave_warning_with_id_handler (my_err_with_id_handler);
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41
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42 retval = octave_value (quotient (a, b));
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43 }
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44 }
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45
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46 return retval;
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47 }