adime_d_double_calc_edit_proc(3)

1adime_d_double_calc_edit_proc(3A)dime API Referenacdeime_d_double_calc_edit_proc(3)
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NAME

6       adime_d_double_calc_edit_proc
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SYNOPSIS

9       #include <adime.h>
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12       int adime_d_double_calc_edit_proc(int msg, DIALOG *d, int c);
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DESCRIPTION

15       Gui  proc  for  an  edit  box accepting a mathematical expression whose
16       result is a floating point number. The result is  calculated  and  dis‐
17       played  on  a separate gui object as the user types. The edit box has a
18       3d-ish look.
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20       The dp2 field points to a `struct ADIME_EDIT_NUMBER *´ which holds some
21       information about the behavior of the edit box:
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23          typedef struct ADIME_EDIT_NUMBER
24          {
25             int is_signed;          /* Set for integer formats if it is signed. */
26             int is_float;           /* Set if we only have float, not double. */
27             double min_val, max_val;/* Range for numbers. */
28             DIALOG *result_object;  /* DIALOG object to display result in. */
29          } ADIME_EDIT_NUMBER;
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31       The  `result_object´  will be used to display the result of the expres‐
32       sion.  There is an `adime_d_calc_edit_result_proc´ object type which is
33       designed  to  be  used  as `result_object´, but you may of course write
34       your own object to take care of this. Whenever  the  user  changes  the
35       text  in  the `adime_d_double_calc_edit_proc´, the result is printed to
36       the `dp´ field of `result_object´; hence you must have set the dp field
37       of  `result_object´  to  a  text buffer with enough space (256 bytes is
38       safe). The `result_object´ will then be sent a `MSG_DRAW´ message  with
39       the  `c´ parameter set to 2 if there is an error in the expression or 1
40       if it is ok.
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NAME

SYNOPSIS

DESCRIPTION

SEE ALSO