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adime_d_double_calc_edit_proc(3) Adime API Reference
NAME
adime_d_double_calc_edit_proc
SYNOPSIS
#include <adime.h>
int adime_d_double_calc_edit_proc(int msg, DIALOG *d, int c);
DESCRIPTION
Gui proc for an edit box accepting a mathematical expression whose
result is a floating point number. The result is calculated and
displayed on a separate gui object as the user types. The edit box has
a 3d-ish look.
The dp2 field points to a `struct ADIME_EDIT_NUMBER *' which holds some
information about the behavior of the edit box:
typedef struct ADIME_EDIT_NUMBER
{
int is_signed; /* Set for integer formats if it is signed. */
int is_float; /* Set if we only have float, not double. */
double min_val, max_val;/* Range for numbers. */
DIALOG *result_object; /* DIALOG object to display result in. */
} ADIME_EDIT_NUMBER;
The `result_object' will be used to display the result of the
expression. There is an `adime_d_calc_edit_result_proc' object type
which is designed to be used as `result_object', but you may of course
write your own object to take care of this. Whenever the user changes
the text in the `adime_d_double_calc_edit_proc', the result is printed
to the `dp' field of `result_object'; hence you must have set the dp
field of `result_object' to a text buffer with enough space (256 bytes
is safe). The `result_object' will then be sent a `MSG_DRAW' message
with the `c' parameter set to 2 if there is an error in the expression
or 1 if it is ok.
SEE ALSO
adime_d_calc_edit_result_proc(3), adime_d_int_calc_edit_proc(3)
Adime version 2.2.1
adime_d_double_calc_edit_proc(3)