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29 .\" $Id: curs_get_wstr.3x,v 1.11 2017/03/04 21:24:04 tom Exp $
30 .TH curs_get_wstr 3X ""
41 \fBmvwgetn_wstr\fR \- get an array of wide characters from a curses terminal keyboard
46 \fB#include <curses.h>\fR
48 \fBint get_wstr(wint_t *\fR\fIwstr\fR\fB);\fR
50 \fBint getn_wstr(wint_t *\fR\fIwstr\fR\fB, int \fR\fIn\fR\fB);\fR
52 \fBint wget_wstr(WINDOW *\fR\fIwin\fR\fB, wint_t *\fR\fIwstr\fR\fB);\fR
54 \fBint wgetn_wstr(WINDOW *\fR\fIwin\fR\fB, wint_t *\fR\fIwstr\fR\fB, int \fR\fIn\fR\fB);\fR
56 \fBint mvget_wstr(int \fR\fIy\fR\fB, int \fR\fIx\fR\fB, wint_t *\fR\fIwstr\fR\fB);\fR
58 \fBint mvgetn_wstr(int \fR\fIy\fR\fB, int \fR\fIx\fR\fB, wint_t *\fR\fIwstr\fR\fB, int \fR\fIn\fR\fB);\fR
60 \fBint mvwget_wstr(WINDOW *\fR\fIwin\fR\fB, int \fR\fIy\fR\fB, int \fR\fIx\fR\fB, wint_t *\fR\fIwstr\fR\fB);\fR
62 \fBint mvwgetn_wstr(WINDOW *\fR\fIwin\fR\fB, int \fR\fIy\fR\fB, int \fR\fIx\fR\fB, wint_t *\fR\fIwstr\fR\fB, int \fR\fIn\fR\fB);\fR
67 is as though a series of calls
70 were made, until a newline, other end-of-line, or end-of-file condition is processed.
71 An end-of-file condition is represented by \fBWEOF\fR, as defined in \fB<wchar.h>\fR.
72 The newline and end-of-line conditions are represented by the \fB\\n\fR \fBwchar_t\fR value.
73 In all instances, the end of the string is terminated by a null \fBwchar_t\fR.
74 The routine places resulting values in the area pointed to by \fIwstr\fR.
76 The user's erase and kill characters are interpreted. If keypad
77 mode is on for the window, \fBKEY_LEFT\fR and \fBKEY_BACKSPACE\fR
78 are both considered equivalent to the user's kill character.
80 Characters input are echoed only if \fBecho\fR is currently on. In that case,
81 backspace is echoed as deletion of the previous character (typically a left
86 is as though a series of
93 is as though a call to
95 and then a series of calls to
102 is as though a call to
104 and then a series of calls to
111 \fBmvwgetn_wstr\fR, and
113 functions are identical
117 \fBmvwget_wstr\fR, and
119 functions, respectively,
122 versions read at most
124 characters, letting the application prevent overflow of the
130 \fBmvwget_wstr\fR, or
133 overflows the array pointed to by
140 \fBmvwgetn_wstr\fR, or
141 \fBwgetn_wstr\fR, respectively, is recommended.
143 These functions cannot return \fBKEY_\fR values because there
144 is no way to distinguish a \fBKEY_\fR value from a valid \fBwchar_t\fR value.
146 All of these routines except \fBwgetn_wstr\fR may be macros.
148 All of these functions return \fBOK\fR upon successful completion.
149 Otherwise, they return \fBERR\fR.
151 Functions using a window parameter return an error if it is null.
155 returns an error if the associated call to \fBwget_wch\fP failed.
158 Functions with a "mv" prefix first perform a cursor movement using
159 \fBwmove\fP, and return an error if the position is outside the window,
160 or if the window pointer is null.
162 These functions are described in The Single Unix Specification, Version 2.
163 No error conditions are defined.
164 This implementation returns ERR if the window pointer is null,
165 or if the lower-level \fBwget_wch\fR call returns an ERR.
167 an ERR return without other data is treated as an end-of-file condition,
168 and the returned array contains a \fBWEOF\fR followed by a null \fBwchar_t\fR.
170 X/Open curses documented these functions to pass an array of \fBwchar_t\fR
171 in 1997, but that was an error because of this part of the description:
174 The effect of \fIget_wstr()\fP is as though a series of calls to
175 \fIget_wch()\fP were made, until a newline character, end-of-line character, or
176 end-of-file character is processed.
179 The latter function \fIget_wch()\fP can return a negative value,
180 while \fBwchar_t\fP is a unsigned type.
181 All of the vendors implement this using \fBwint_t\fR, following the standard.
185 \fBcurs_get_wch\fR(3X),
186 \fBcurs_getstr\fR(3X).