Xutf8LookupString man page on BSDi

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XmbLookupString(3X11)	XLIB FUNCTIONS	  XmbLookupString(3X11)

NAME
       XmbLookupString, XwcLookupString, Xutf8LookupString -
       obtain composed input from an input method

SYNTAX
       int XmbLookupString(ic, event, buffer_return,
       bytes_buffer, keysym_return, status_return)
	     XIC ic;
	     XKeyPressedEvent *event;
	     char *buffer_return;
	     int bytes_buffer;
	     KeySym *keysym_return;
	     Status *status_return;

       int XwcLookupString(ic, event, buffer_return,
       bytes_buffer, keysym_return, status_return)
	     XIC ic;
	     XKeyPressedEvent *event;
	     wchar_t *buffer_return;
	     int wchars_buffer;
	     KeySym *keysym_return;
	     Status *status_return;

       int Xutf8LookupString(ic, event, buffer_return,
       bytes_buffer, keysym_return, status_return)
	     XIC ic;
	     XKeyPressedEvent *event;
	     char *buffer_return;
	     int bytes_buffer;
	     KeySym *keysym_return;
	     Status *status_return;

ARGUMENTS
       buffer_return
		 Returns a multibyte string or wide character
		 string (if any) from the input method.

       bytes_buffer
       wchars_buffer
		 Specifies space available in the return buffer.

       event	Specifies the key event to be used.

       ic	Specifies the input context.

       keysym_return
		 Returns the KeySym computed from the event if
		 this argument is not NULL.

       status_return
		 Returns a value indicating what kind of data is
		 returned.

X Version 11		Release 6.4				1

XmbLookupString(3X11)	XLIB FUNCTIONS	  XmbLookupString(3X11)

DESCRIPTION
       The XmbLookupString, XwcLookupString and Xutf8LookupString
       functions return the string from the input method speci-
       fied in the buffer_return argument.  If no string is
       returned, the buffer_return argument is unchanged.

       The KeySym into which the KeyCode from the event was
       mapped is returned in the keysym_return argument if it is
       non-NULL and the status_return argument indicates that a
       KeySym was returned.  If both a string and a KeySym are
       returned, the KeySym value does not necessarily correspond
       to the string returned.

       XmbLookupString and Xutf8LookupString return the length of
       the string in bytes, and XwcLookupString returns the
       length of the string in characters.  Both XmbLookupString
       and XwcLookupString return text in the encoding of the
       locale bound to the input method of the specified input
       context, and Xutf8LookupString returns text in UTF-8
       encoding.

       Each string returned by XmbLookupString and XwcLookup-
       String begins in the initial state of the encoding of the
       locale (if the encoding of the locale is state-dependent).

				  Note

	    (R)To ensure proper input processing, it is
	    essential that the client pass only KeyPress
	    events to XmbLookupString, XwcLookupString and
	    Xutf8LookupString.	Their behavior when a client
	    passes a KeyRelease event is undefined.

       Clients should check the status_return argument before
       using the other returned values. These three functions
       each return a value to status_return that indicates what
       has been returned in the other arguments.  The possible
       values returned are:
       XBufferOverflow	The input string to be returned is too
			 large for the supplied buffer_return.	The
			 required size (for XmbLookupString,
			 Xutf8LookupString in bytes; for XwcLookup-
			 String in characters) is returned as the
			 value of the function, and the contents of
			 buffer_return and keysym_return are not
			 modified.  The client should recall the
			 function with the same event and a buffer
			 of adequate size to obtain the string.
       XLookupNone	No consistent input has been composed so
			 far.  The contents of buffer_return and
			 keysym_return are not modified, and the
			 function returns zero.

X Version 11		Release 6.4				2

XmbLookupString(3X11)	XLIB FUNCTIONS	  XmbLookupString(3X11)

       XLookupChars	Some input characters have been composed.
			 They are placed in the buffer_return argu-
			 ment, using the encoding described above,
			 and the string length is returned as the
			 value of the function. The content of the
			 keysym_return argument is not modified.
       XLookupKeySym	A KeySym has been returned instead of a
			 string and is returned in keysym_return.
			 The content of the buffer_return argument
			 is not modified, and the function returns
			 zero.
       XLookupBoth	Both a KeySym and a string are returned;
			 XLookupChars and XLookupKeySym occur simul-
			 taneously.

       It does not make any difference if the input context
       passed as an argument to XmbLookupString, XwcLookupString
       and Xutf8LookupString is the one currently in possession
       of the focus or not.  Input may have been composed within
       an input context before it lost the focus, and that input
       may be returned on subsequent calls to XmbLookupString,
       XwcLookupString or Xutf8LookupString even though it does
       not have any more keyboard focus.

       The function Xutf8LookupString is an XFree86 extension
       introduced in XFree86 4.0.2. Its presence is indicated by
       the macro X_HAVE_UTF8_STRING.

SEE ALSO
       XLookupKeysym(3X11)
       Xlib - C Language X Interface

X Version 11		Release 6.4				3

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