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RedHat 9 (Linux i386) - man page for message (redhat section n)

message(n)			       Tk Built-In Commands			       message(n)

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NAME
       message - Create and manipulate message widgets

SYNOPSIS
       message pathName ?options?

STANDARD OPTIONS
       -anchor		     -highlightbackground -takefocus
       -background	     -highlightcolor	  -text
       -borderwidth	     -highlightthickness  -textvariable
       -cursor		     -padx		  -width
       -font		     -pady
       -foreground	     -relief

       See the options manual entry for details on the standard options.

WIDGET-SPECIFIC OPTIONS
       [-aspect aspect]  Specifies  a  non-negative integer value indicating desired aspect ratio
       for the text.  The aspect ratio is specified as	100*width/height.   100  means	the  text
       should be as wide as it is tall, 200 means the text should be twice as wide as it is tall,
       50 means the text should be twice as tall as it is wide, and so on.  Used to  choose  line
       length  for  text  if  width option isn't specified.  Defaults to 150.  [-justify justify]
       Specifies how to justify lines of text.	Must be one of left, center, or right.	 Defaults
       to  left.   This  option  works	together  with	the anchor, aspect, padX, padY, and width
       options to provide a variety of arrangements of the text within the  window.   The  aspect
       and  width  options  determine the amount of screen space needed to display the text.  The
       anchor, padX, and padY options determine where this rectangular area is	displayed  within
       the  widget's  window, and the justify option determines how each line is displayed within
       that rectangular region.  For example, suppose anchor is e and justify is left,	and  that
       the  message  window is much larger than needed for the text.  The the text will displayed
       so that the left edges of all the lines line up and the right edge of the longest line  is
       padX  from  the	right  side of the window;  the entire text block will be centered in the
       vertical span of the window.  [-width width] Specifies the length of lines in the  window.
       The  value  may	have  any  of the forms acceptable to Tk_GetPixels.  If this option has a
       value greater than zero then the aspect option is ignored and the width option  determines
       the  line  length.  If this option has a value less than or equal to zero, then the aspect
       option determines the line length.
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DESCRIPTION
       The message command creates a new window (given by the pathName	argument)  and	makes  it
       into  a message widget.	Additional options, described above, may be specified on the com-
       mand line or in the option database to configure aspects of the message such as	its  col-
       ors,  font,  text, and initial relief.  The message command returns its pathName argument.
       At the time this command is invoked, there must not exist a  window  named  pathName,  but
       pathName's parent must exist.

       A  message is a widget that displays a textual string.  A message widget has three special
       features.  First, it breaks up its string into lines in order to produce  a  given  aspect
       ratio for the window.  The line breaks are chosen at word boundaries wherever possible (if
       not even a single word would fit on a line, then the word will  be  split  across  lines).
       Newline	characters  in the string will force line breaks;  they can be used, for example,
       to leave blank lines in the display.

       The second feature of a message widget is justification.  The text may be displayed  left-
       justified  (each  line  starts at the left side of the window), centered on a line-by-line
       basis, or right-justified (each line ends at the right side of the window).

       The third feature of a message widget is that it handles control characters and non-print-
       ing  characters specially.  Tab characters are replaced with enough blank space to line up
       on the next 8-character boundary.  Newlines cause line breaks.  Other  control  characters
       (ASCII  code  less  than  0x20)	and characters not defined in the font are displayed as a
       four-character sequence \xhh where hh is the two-digit hexadecimal number corresponding to
       the  character.	 In the unusual case where the font doesn't contain all of the characters
       in ``0123456789abcdef\x'' then control characters and undefined characters  are	not  dis-
       played at all.

WIDGET COMMAND
       The message command creates a new Tcl command whose name is pathName.  This command may be
       used to invoke various operations on the widget.  It has the following general form:
	      pathName option ?arg arg ...?
       Option and the args determine the exact behavior of the command.  The  following  commands
       are possible for message widgets:

       pathName cget option
	      Returns  the current value of the configuration option given by option.  Option may
	      have any of the values accepted by the message command.

       pathName configure ?option? ?value option value ...?
	      Query or modify the configuration options of the widget.	If no  option  is  speci-
	      fied,  returns  a  list  describing  all of the available options for pathName (see
	      Tk_ConfigureInfo for information on the format of this list).  If option is  speci-
	      fied with no value, then the command returns a list describing the one named option
	      (this list will be identical to the corresponding sublist of the value returned  if
	      no option is specified).	If one or more option-value pairs are specified, then the
	      command modifies the given widget option(s) to have the given  value(s);	 in  this
	      case  the  command  returns  an  empty  string.	Option may have any of the values
	      accepted by the message command.

DEFAULT BINDINGS
       When a new message is created, it has no default event bindings: messages are intended for
       output purposes only.

BUGS
       Tabs  don't work very well with text that is centered or right-justified.  The most common
       result is that the line is justified wrong.

KEYWORDS
       message, widget

Tk					       4.0				       message(n)


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