curs_get_wstr.3x.html 9.2 KB

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  30. * @Id: curs_get_wstr.3x,v 1.6 2006/02/25 21:49:19 tom Exp @
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  34. <TITLE>curs_get_wstr 3x</TITLE>
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  39. <H1>curs_get_wstr 3x</H1>
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  41. <PRE>
  42. <!-- Manpage converted by man2html 3.0.1 -->
  43. <STRONG><A HREF="curs_get_wstr.3x.html">curs_get_wstr(3x)</A></STRONG> <STRONG><A HREF="curs_get_wstr.3x.html">curs_get_wstr(3x)</A></STRONG>
  44. </PRE>
  45. <H2>NAME</H2><PRE>
  46. <STRONG>get_wstr</STRONG>, <STRONG>getn_wstr</STRONG>, <STRONG>wget_wstr</STRONG>, <STRONG>wgetn_wstr</STRONG>, <STRONG>mvget_wstr</STRONG>,
  47. <STRONG>mvgetn_wstr</STRONG>, <STRONG>mvwget_wstr</STRONG>, <STRONG>mvwgetn_wstr</STRONG> - get an array of
  48. wide characters from a curses terminal keyboard
  49. </PRE>
  50. <H2>SYNOPSIS</H2><PRE>
  51. <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
  52. <STRONG>int</STRONG> <STRONG>get_wstr(wint_t</STRONG> <STRONG>*</STRONG><EM>wstr</EM><STRONG>);</STRONG>
  53. <STRONG>int</STRONG> <STRONG>getn_wstr(wint_t</STRONG> <STRONG>*</STRONG><EM>wstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
  54. <STRONG>int</STRONG> <STRONG>wget_wstr(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>wint_t</STRONG> <STRONG>*</STRONG><EM>wstr</EM><STRONG>);</STRONG>
  55. <STRONG>int</STRONG> <STRONG>wgetn_wstr(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>wint_t</STRONG> <STRONG>*</STRONG><EM>wstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
  56. <STRONG>int</STRONG> <STRONG>mvget_wstr(int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>wint_t</STRONG> <STRONG>*</STRONG><EM>wstr</EM><STRONG>);</STRONG>
  57. <STRONG>int</STRONG> <STRONG>mvgetn_wstr(int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>wint_t</STRONG> <STRONG>*</STRONG><EM>wstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
  58. <STRONG>int</STRONG> <STRONG>mvwget_wstr(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>wint_t</STRONG> <STRONG>*</STRONG><EM>wstr</EM><STRONG>);</STRONG>
  59. <STRONG>int</STRONG> <STRONG>mvwgetn_wstr(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>wint_t</STRONG> <STRONG>*</STRONG><EM>wstr</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>);</STRONG>
  60. </PRE>
  61. <H2>DESCRIPTION</H2><PRE>
  62. The effect of <STRONG>get_wstr</STRONG> is as though a series of calls to
  63. <STRONG>get_wch</STRONG> were made, until a newline, other end-of-line, or
  64. end-of-file condition is processed. An end-of-file condi-
  65. tion is represented by <STRONG>WEOF</STRONG>, as defined in <STRONG>&lt;wchar.h&gt;</STRONG>. The
  66. newline and end-of-line conditions are represented by the
  67. <STRONG>\n</STRONG> <STRONG>wchar_t</STRONG> value. In all instances, the end of the string
  68. is terminated by a null <STRONG>wchar_t</STRONG>. The routine places re-
  69. sulting values in the area pointed to by <EM>wstr</EM>.
  70. The user's erase and kill characters are interpreted. If
  71. keypad mode is on for the window, <STRONG>KEY_LEFT</STRONG> and
  72. <STRONG>KEY_BACKSPACE</STRONG> are both considered equivalent to the user's
  73. kill character.
  74. Characters input are echoed only if <STRONG>echo</STRONG> is currently on.
  75. In that case, backspace is echoed as deletion of the pre-
  76. vious character (typically a left motion).
  77. The effect of <STRONG>wget_wstr</STRONG> is as though a series of calls to
  78. <STRONG>wget_wch</STRONG> were made.
  79. The effect of <STRONG>mvget_wstr</STRONG> is as though a call to <STRONG>move</STRONG> and
  80. then a series of calls to <STRONG>get_wch</STRONG> were made.
  81. The effect of <STRONG>mvwget_wstr</STRONG> is as though a call to <STRONG>wmove</STRONG> and
  82. then a series of calls to <STRONG>wget_wch</STRONG> were made.
  83. The <STRONG>getn_wstr</STRONG>, <STRONG>mvgetn_wstr</STRONG>, <STRONG>mvwgetn_wstr</STRONG>, and <STRONG>wgetn_wstr</STRONG>
  84. functions are identical to the <STRONG>get_wstr</STRONG>, <STRONG>mvget_wstr</STRONG>,
  85. <STRONG>mvwget_wstr</STRONG>, and <STRONG>wget_wstr</STRONG> functions, respectively, except
  86. that the <STRONG>*n_*</STRONG> versions read at most <EM>n</EM> characters, letting
  87. the application prevent overflow of the input buffer.
  88. </PRE>
  89. <H2>NOTES</H2><PRE>
  90. Using <STRONG>get_wstr</STRONG>, <STRONG>mvget_wstr</STRONG>, <STRONG>mvwget_wstr</STRONG>, or <STRONG>wget_wstr</STRONG> to
  91. read a line that overflows the array pointed to by <STRONG>wstr</STRONG>
  92. causes undefined results. The use of <STRONG>getn_wstr</STRONG>,
  93. <STRONG>mvgetn_wstr</STRONG>, <STRONG>mvwgetn_wstr</STRONG>, or <STRONG>wgetn_wstr</STRONG>, respectively, is
  94. recommended.
  95. These functions cannot return <STRONG>KEY_</STRONG> values because there is
  96. no way to distinguish a <STRONG>KEY_</STRONG> value from a valid <STRONG>wchar_t</STRONG>
  97. value.
  98. All of these routines except <STRONG>wgetn_wstr</STRONG> may be macros.
  99. </PRE>
  100. <H2>RETURN VALUES</H2><PRE>
  101. All of these functions return <STRONG>OK</STRONG> upon successful comple-
  102. tion. Otherwise, they return <STRONG>ERR</STRONG>.
  103. Functions using a window parameter return an error if it
  104. is null.
  105. <STRONG>wgetn_wstr</STRONG>
  106. returns an error if the associated call to
  107. <STRONG>wget_wch</STRONG> failed.
  108. </PRE>
  109. <H2>PORTABILITY</H2><PRE>
  110. These functions are described in The Single Unix Specifi-
  111. cation, Version 2. No error conditions are defined. This
  112. implementation returns ERR if the window pointer is null,
  113. or if the lower-level <STRONG>wget_wch</STRONG> call returns an ERR. In
  114. the latter case, an ERR return without other data is
  115. treated as an end-of-file condition, and the returned ar-
  116. ray contains a <STRONG>WEOF</STRONG> followed by a null <STRONG>wchar_t</STRONG>.
  117. X/Open curses documents these functions to pass an array
  118. of <STRONG>wchar_t</STRONG>, but all of the vendors implement this using
  119. <STRONG>wint_t</STRONG>.
  120. </PRE>
  121. <H2>SEE ALSO</H2><PRE>
  122. Functions: <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_get_wch.3x.html">curs_get_wch(3x)</A></STRONG>, <STRONG><A HREF="curs_getstr.3x.html">curs_getstr(3x)</A></STRONG>.
  123. <STRONG><A HREF="curs_get_wstr.3x.html">curs_get_wstr(3x)</A></STRONG>
  124. </PRE>
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