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message.n
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Text File
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1995-07-25
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11KB
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198 lines
mmmmeeeessssssssaaaaggggeeee((((nnnn)))) TTTTkkkk (((( )))) mmmmeeeessssssssaaaaggggeeee((((nnnn))))
_________________________________________________________________
NNNNAAAAMMMMEEEE
message - Create and manipulate message widgets
SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
mmmmeeeessssssssaaaaggggeeee _p_a_t_h_N_a_m_e ?_o_p_t_i_o_n_s?
SSSSTTTTAAAANNNNDDDDAAAARRRRDDDD OOOOPPPPTTTTIIIIOOOONNNNSSSS
aaaannnncccchhhhoooorrrr ccccuuuurrrrssssoooorrrr ppppaaaaddddXXXX tttteeeexxxxtttt |
bbbbaaaacccckkkkggggrrrroooouuuunnnndddd ffffoooonnnntttt ppppaaaaddddYYYY tttteeeexxxxttttVVVVaaaarrrriiiiaaaabbbblllleeee |
bbbboooorrrrddddeeeerrrrWWWWiiiiddddtttthhhh ffffoooorrrreeeeggggrrrroooouuuunnnndddd rrrreeeelllliiiieeeeffff wwwwiiiiddddtttthhhh |
See the ``options'' manual entry for details on the standard
options.
WWWWIIIIDDDDGGGGEEEETTTT----SSSSPPPPEEEECCCCIIIIFFFFIIIICCCC OOOOPPPPTTTTIIIIOOOONNNNSSSS
Name: aaaassssppppeeeecccctttt
Class: AAAAssssppppeeeecccctttt
Command-Line Switch:----aaaassssppppeeeecccctttt
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 wwwwiiiiddddtttthhhh option |
isn't specified. Defaults to 150.
Name: jjjjuuuussssttttiiiiffffyyyy
Class: JJJJuuuussssttttiiiiffffyyyy
Command-Line Switch:----jjjjuuuussssttttiiiiffffyyyy
Specifies how to justify lines of text. Must be one of
lllleeeefffftttt, cccceeeennnntttteeeerrrr, or rrrriiiigggghhhhtttt. Defaults to lllleeeefffftttt. This option |
works together with the aaaannnncccchhhhoooorrrr, aaaassssppppeeeecccctttt, ppppaaaaddddXXXX, ppppaaaaddddYYYY, and |
wwwwiiiiddddtttthhhh options to provide a variety of arrangements of |
the text within the window. The aaaassssppppeeeecccctttt and wwwwiiiiddddtttthhhh |
options determine the amount of screen space needed to |
display the text. The aaaannnncccchhhhoooorrrr, ppppaaaaddddXXXX, and ppppaaaaddddYYYY options |
determine where this rectangular area is displayed |
within the widget's window, and the jjjjuuuussssttttiiiiffffyyyy option |
determines how each line is displayed within that |
rectangular region. For example, suppose aaaannnncccchhhhoooorrrr is eeee |
and jjjjuuuussssttttiiiiffffyyyy is lllleeeefffftttt, 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 ppppaaaaddddXXXX |
from the right side of the window; the entire text |
block will be centered in the vertical span of the |
window.
Page 1 (printed 7/23/95)
mmmmeeeessssssssaaaaggggeeee((((nnnn)))) TTTTkkkk (((( )))) mmmmeeeessssssssaaaaggggeeee((((nnnn))))
Name: wwwwiiiiddddtttthhhh |
Class: WWWWiiiiddddtttthhhh |
Command-Line Switch:----wwwwiiiiddddtttthhhh |
||
Specifies the length of lines in the window. The value |
may have any of the forms acceptable to TTTTkkkk____GGGGeeeettttPPPPiiiixxxxeeeellllssss. |
If this option has a value greater than zero then the |
aaaassssppppeeeecccctttt option is ignored and the wwwwiiiiddddtttthhhh option |
determines the line length. If this option has a value |
less than or equal to zero, then the aaaassssppppeeeecccctttt option |
determines the line length.
_________________________________________________________________
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
The mmmmeeeessssssssaaaaggggeeee command creates a new window (given by the
_p_a_t_h_N_a_m_e argument) and makes it into a message widget.
Additional options, described above, may be specified on the
command line or in the option database to configure aspects
of the message such as its colors, font, text, and initial
relief. The mmmmeeeessssssssaaaaggggeeee command returns its _p_a_t_h_N_a_m_e argument.
At the time this command is invoked, there must not exist a
window named _p_a_t_h_N_a_m_e, but _p_a_t_h_N_a_m_e'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-printing 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 \\\\xxxx_h_h where _h_h 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 displayed at all.
Page 2 (printed 7/23/95)
mmmmeeeessssssssaaaaggggeeee((((nnnn)))) TTTTkkkk (((( )))) mmmmeeeessssssssaaaaggggeeee((((nnnn))))
WWWWIIIIDDDDGGGGEEEETTTT CCCCOOOOMMMMMMMMAAAANNNNDDDD
The mmmmeeeessssssssaaaaggggeeee command creates a new Tcl command whose name is
_p_a_t_h_N_a_m_e. This command may be used to invoke various
operations on the widget. It has the following general
form:
_p_a_t_h_N_a_m_e _o_p_t_i_o_n ?_a_r_g _a_r_g ...?
_O_p_t_i_o_n and the _a_r_gs determine the exact behavior of the
command. The following commands are possible for message
widgets:
_p_a_t_h_N_a_m_e ccccoooonnnnffffiiiigggguuuurrrreeee ?_o_p_t_i_o_n? ?_v_a_l_u_e _o_p_t_i_o_n _v_a_l_u_e ...?
Query or modify the configuration options of the
widget. If no _o_p_t_i_o_n is specified, returns a list
describing all of the available options for _p_a_t_h_N_a_m_e
(see TTTTkkkk____CCCCoooonnnnffffiiiigggguuuurrrreeeeIIIInnnnffffoooo for information on the format of
this list). If _o_p_t_i_o_n is specified with no _v_a_l_u_e, 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
_o_p_t_i_o_n is specified). If one or more _o_p_t_i_o_n-_v_a_l_u_e
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. _O_p_t_i_o_n
may have any of the values accepted by the mmmmeeeessssssssaaaaggggeeee
command.
DDDDEEEEFFFFAAAAUUUULLLLTTTT BBBBIIIINNNNDDDDIIIINNNNGGGGSSSS
When a new message is created, it has no default event
bindings: messages are intended for output purposes only.
BBBBUUUUGGGGSSSS
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.
KKKKEEEEYYYYWWWWOOOORRRRDDDDSSSS
message, widget
Page 3 (printed 7/23/95)