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bbbbuuuuttttttttoooonnnn((((3333TTTTkkkk)))) bbbbuuuuttttttttoooonnnn((((3333TTTTkkkk)))) 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 ccccuuuurrrrssssoooorrrr hhhhiiiigggghhhhlllliiiigggghhhhttttTTTThhhhiiiicccckkkknnnneeeessssssssttttaaaakkkkeeeeFFFFooooccccuuuussss| aaaaccccttttiiiivvvveeeeFFFFoooorrrreeeeggggrrrroooouuuunnnndddd ddddiiiissssaaaabbbblllleeeeddddFFFFoooorrrreeeeggggrrrroooouuuunnnnddddiiiimmmmaaaaggggeeeetttteeeexxxxtttt | aaaannnncccchhhhoooorrrr ffffoooonnnntttt jjjjuuuussssttttiiiiffffyyyy tttteeeexxxxttttVVVVaaaarrrriiiiaaaabbbblllleeee | bbbbaaaacccckkkkggggrrrroooouuuunnnndddd ffffoooorrrreeeeggggrrrroooouuuunnnndddd ppppaaaaddddXXXX uuuunnnnddddeeeerrrrlllliiiinnnneeee | bbbbiiiittttmmmmaaaapppp hhhhiiiigggghhhhlllliiiigggghhhhttttCCCCoooolllloooorrrr ppppaaaaddddYYYY wwwwrrrraaaappppLLLLeeeennnnggggtttthhhh | bbbboooorrrrddddeeeerrrrWWWWiiiiddddtttthhhh hhhhiiiigggghhhhlllliiiigggghhhhttttBBBBaaaacccckkkkggggrrrroooouuuunnnndddd rrrreeeelllliiiieeeeffff 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 an image or 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 image or 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 should be | insensitive: the default bindings will refuse to activate the | widget and will ignore mouse button presses. In this state the ddddiiiissssaaaabbbblllleeeeddddFFFFoooorrrreeeeggggrrrroooouuuunnnndddd and bbbbaaaacccckkkkggggrrrroooouuuunnnndddd options determine how the button is displayed. PPPPaaaaggggeeee 1111 bbbbuuuuttttttttoooonnnn((((3333TTTTkkkk)))) bbbbuuuuttttttttoooonnnn((((3333TTTTkkkk)))) Name: wwwwiiiiddddtttthhhh Class: WWWWiiiiddddtttthhhh Command-Line Switch:----wwwwiiiiddddtttthhhh Specifies a desired width for the button. If an image or 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 image or 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, bitmap or image. If| text is displayed, it must all be in a single font, but it can occupy | multiple lines on the screen (if it contains newlines or if wrapping | occurs because of the wwwwrrrraaaappppLLLLeeeennnnggggtttthhhh option) and one of the characters may | optionally be underlined using the uuuunnnnddddeeeerrrrlllliiiinnnneeee option. 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 ccccggggeeeetttt _o_p_t_i_o_n Returns the current value of the configuration option given by | _o_p_t_i_o_n. _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 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 PPPPaaaaggggeeee 2222 bbbbuuuuttttttttoooonnnn((((3333TTTTkkkk)))) bbbbuuuuttttttttoooonnnn((((3333TTTTkkkk)))) 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 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] A button activates whenever the mouse passes over it and deactivates whenever the mouse leaves the button. [2] A 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 a 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. [4] When a button has the input focus, the space key causes the button | to be invoked. 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. PPPPaaaaggggeeee 3333 bbbbuuuuttttttttoooonnnn((((3333TTTTkkkk)))) bbbbuuuuttttttttoooonnnn((((3333TTTTkkkk)))) KEYWORDS button, widget PPPPaaaaggggeeee 4444 
