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button.n
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1995-07-25
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15KB
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264 lines
bbbbuuuuttttttttoooonnnn((((nnnn)))) TTTTkkkk (((( )))) bbbbuuuuttttttttoooonnnn((((nnnn))))
_________________________________________________________________
NNNNAAAAMMMMEEEE
button - Create and manipulate button widgets
SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
bbbbuuuuttttttttoooonnnn _p_a_t_h_N_a_m_e ?_o_p_t_i_o_n_s?
SSSSTTTTAAAANNNNDDDDAAAARRRRDDDD OOOOPPPPTTTTIIIIOOOONNNNSSSS
aaaaccccttttiiiivvvveeeeBBBBaaaacccckkkkggggrrrroooouuuunnnndddd bbbbiiiittttmmmmaaaapppp ffffoooonnnnttttrrrreeeelllliiiieeeeffff |
aaaaccccttttiiiivvvveeeeFFFFoooorrrreeeeggggrrrroooouuuunnnndddd bbbboooorrrrddddeeeerrrrWWWWiiiiddddtttthhhh ffffoooorrrreeeeggggrrrroooouuuunnnnddddtttteeeexxxxtttt |
aaaannnncccchhhhoooorrrr ccccuuuurrrrssssoooorrrr ppppaaaaddddXXXX tttteeeexxxxttttVVVVaaaarrrriiiiaaaabbbblllleeee |
bbbbaaaacccckkkkggggrrrroooouuuunnnndddd ddddiiiissssaaaabbbblllleeeeddddFFFFoooorrrreeeeggggrrrroooouuuunnnndddd ppppaaaaddddYYYY |
See the ``options'' manual entry for details on the standard
options.
WWWWIIIIDDDDGGGGEEEETTTT----SSSSPPPPEEEECCCCIIIIFFFFIIIICCCC OOOOPPPPTTTTIIIIOOOONNNNSSSS
Name: ccccoooommmmmmmmaaaannnndddd
Class: CCCCoooommmmmmmmaaaannnndddd
Command-Line Switch:----ccccoooommmmmmmmaaaannnndddd
Specifies a Tcl command to associate with the button.
This command is typically invoked when mouse button 1
is released over the button window.
Name: hhhheeeeiiiigggghhhhtttt |
Class: HHHHeeeeiiiigggghhhhtttt |
Command-Line Switch:----hhhheeeeiiiigggghhhhtttt |
||
Specifies a desired height for the button. If a bitmap |
is being displayed in the button then the value is in |
screen units (i.e. any of the forms acceptable to |
TTTTkkkk____GGGGeeeettttPPPPiiiixxxxeeeellllssss); for text it is in lines of text. If |
this option isn't specified, the button's desired |
height is computed from the size of the bitmap or text |
being displayed in it. |
Name: ssssttttaaaatttteeee |
Class: SSSSttttaaaatttteeee |
Command-Line Switch:----ssssttttaaaatttteeee |
||
Specifies one of three states for the button: nnnnoooorrrrmmmmaaaallll, |
aaaaccccttttiiiivvvveeee, or ddddiiiissssaaaabbbblllleeeedddd. In normal state the button is |
displayed using the ffffoooorrrreeeeggggrrrroooouuuunnnndddd and bbbbaaaacccckkkkggggrrrroooouuuunnnndddd options. |
The active state is typically used when the pointer is |
over the button. In active state the button is |
displayed using the aaaaccccttttiiiivvvveeeeFFFFoooorrrreeeeggggrrrroooouuuunnnndddd and |
aaaaccccttttiiiivvvveeeeBBBBaaaacccckkkkggggrrrroooouuuunnnndddd options. Disabled state means that |
the button is insensitive: it doesn't activate and |
Page 1 (printed 7/23/95)
bbbbuuuuttttttttoooonnnn((((nnnn)))) TTTTkkkk (((( )))) bbbbuuuuttttttttoooonnnn((((nnnn))))
doesn't respond to mouse button presses. In this state |
the ddddiiiissssaaaabbbblllleeeeddddFFFFoooorrrreeeeggggrrrroooouuuunnnndddd and bbbbaaaacccckkkkggggrrrroooouuuunnnndddd options determine |
how the button is displayed. |
Name: wwwwiiiiddddtttthhhh |
Class: WWWWiiiiddddtttthhhh |
Command-Line Switch:----wwwwiiiiddddtttthhhh |
||
Specifies a desired width for the button. If a bitmap |
is being displayed in the button then the value is in |
screen units (i.e. any of the forms acceptable to |
TTTTkkkk____GGGGeeeettttPPPPiiiixxxxeeeellllssss); for text it is in characters. If this |
option isn't specified, the button's desired width is |
computed from the size of the bitmap or text being |
displayed in it.
_________________________________________________________________
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
The bbbbuuuuttttttttoooonnnn command creates a new window (given by the
_p_a_t_h_N_a_m_e argument) and makes it into a button widget.
Additional options, described above, may be specified on the
command line or in the option database to configure aspects
of the button such as its colors, font, text, and initial
relief. The bbbbuuuuttttttttoooonnnn 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 button is a widget that displays a textual string or |
bitmap. It can display itself in either of three different |
ways, according to the ssssttttaaaatttteeee option; it can be made to
appear raised, sunken, or flat; and it can be made to flash.
When a user invokes the button (by pressing mouse button 1
with the cursor over the button), then the Tcl command
specified in the ----ccccoooommmmmmmmaaaannnndddd option is invoked.
WWWWIIIIDDDDGGGGEEEETTTT CCCCOOOOMMMMMMMMAAAANNNNDDDD
The bbbbuuuuttttttttoooonnnn 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 button
widgets:
_p_a_t_h_N_a_m_e aaaaccccttttiiiivvvvaaaatttteeee
Change the button's state to aaaaccccttttiiiivvvveeee and redisplay the
button using its active foreground and background
Page 2 (printed 7/23/95)
bbbbuuuuttttttttoooonnnn((((nnnn)))) TTTTkkkk (((( )))) bbbbuuuuttttttttoooonnnn((((nnnn))))
colors instead of normal colors. This command is |
ignored if the button's state is ddddiiiissssaaaabbbblllleeeedddd. This |
command is obsolete and will eventually be removed; use |
``_p_a_t_h_N_a_m_e ccccoooonnnnffffiiiigggguuuurrrreeee ----ssssttttaaaatttteeee aaaaccccttttiiiivvvveeee'' instead.
_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 bbbbuuuuttttttttoooonnnn
command.
_p_a_t_h_N_a_m_e ddddeeeeaaaaccccttttiiiivvvvaaaatttteeee
Change the button's state to nnnnoooorrrrmmmmaaaallll and redisplay the
button using its normal foreground and background
colors. This command is ignored if the button's state |
is ddddiiiissssaaaabbbblllleeeedddd. This command is obsolete and will |
eventually be removed; use ``_p_a_t_h_N_a_m_e ccccoooonnnnffffiiiigggguuuurrrreeee ----ssssttttaaaatttteeee |
nnnnoooorrrrmmmmaaaallll'' instead.
_p_a_t_h_N_a_m_e ffffllllaaaasssshhhh
Flash the button. This is accomplished by redisplaying
the button several times, alternating between active
and normal colors. At the end of the flash the button
is left in the same normal/active state as when the
command was invoked. This command is ignored if the |
button's state is ddddiiiissssaaaabbbblllleeeedddd.
_p_a_t_h_N_a_m_e iiiinnnnvvvvooookkkkeeee
Invoke the Tcl command associated with the button, if |
there is one. The return value is the return value |
from the Tcl command, or an empty string if there is no |
command associated with the button. This command is |
ignored if the button's state is ddddiiiissssaaaabbbblllleeeedddd.
DDDDEEEEFFFFAAAAUUUULLLLTTTT BBBBIIIINNNNDDDDIIIINNNNGGGGSSSS
Tk automatically creates class bindings for buttons that |
give them the following default behavior: |
[1] ||
The button activates whenever the mouse passes over it |
and deactivates whenever the mouse leaves the button. |
Page 3 (printed 7/23/95)
bbbbuuuuttttttttoooonnnn((((nnnn)))) TTTTkkkk (((( )))) bbbbuuuuttttttttoooonnnn((((nnnn))))
[2] ||
The button's relief is changed to sunken whenever mouse |
button 1 is pressed over the button, and the relief is |
restored to its original value when button 1 is later |
released. |
[3] ||
If mouse button 1 is pressed over the button and later |
released over the button, the button is invoked. |
However, if the mouse is not over the button when |
button 1 is released, then no invocation occurs. |
If the button's state is ddddiiiissssaaaabbbblllleeeedddd then none of the above |
actions occur: the button is completely non-responsive. |
The behavior of buttons can be changed by defining new |
bindings for individual widgets or by redefining the class |
bindings.
KKKKEEEEYYYYWWWWOOOORRRRDDDDSSSS
button, widget
Page 4 (printed 7/23/95)