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# Tix Demostration Program

#

# This sample program is structured in such a way so that it can be

# executed from the Tix demo program "widget": it must have a

# procedure called "RunSample". It should also have the "if" statment

# at the end of this file so that it can be run as a standalone

# program using tixwish.

# This file demonstrates the use of the tixComboBox widget, which is close

# to the MS Window Combo Box control.

#

proc RunSample {w} {

    # Create the comboboxes on the top of the dialog box

    #

    frame $w.top -border 1 -relief raised

    # $w.top.a is a drop-down combo box. It is not editable -- who wants

    # to invent new months?

    #

    # [Hint] The -options switch sets the options of the subwidgets.

    # [Hint] We set the label.width subwidget option of both comboboxes to 

    #        be 10 so that their labels appear to be aligned.

    #

    tixComboBox $w.top.a -label "Month: " -dropdown true \

        -command cbx:select_month -editable false -variable demo_month \

        -options {

            listbox.height 6

            label.width 10

            label.anchor e

        }

    # $w.top.b is a non-drop-down combo box. It is not editable: we provide

    # four choices for the user, but he can enter an alternative year if he

    # wants to.

    #

    # [Hint] Use the padY and anchor options of the label subwidget to

    #        aligh the label with the entry subwidget.

    # [Hint] Notice that you should use padY (the NAME of the option) and not

    #        pady (the SWITCH of the option).

    #

    tixComboBox $w.top.b -label "Year: " -dropdown false \

        -command cbx:select_year -editable true -variable demo_year \

        -options {

            listbox.height 4

            label.padY 5

            label.width 10

            label.anchor ne

        }

    pack $w.top.a -side top -anchor w

    pack $w.top.b -side top -anchor w

    # Insert the choices into the combo boxes

    #

    $w.top.a insert end January

    $w.top.a insert end February

    $w.top.a insert end March

    $w.top.a insert end April

    $w.top.a insert end May

    $w.top.a insert end June

    $w.top.a insert end July

    $w.top.a insert end August

    $w.top.a insert end September

    $w.top.a insert end October

    $w.top.a insert end November

    $w.top.a insert end December

    $w.top.b insert end 1992

    $w.top.b insert end 1993

    $w.top.b insert end 1994

    $w.top.b insert end 1995

    # Use "tixSetSilent" to set the values of the combo box if you

    # don't want your -command procedures (cbx:select_month and 

    # cbx:select_year) to be called.

    #

    tixSetSilent $w.top.a January

    tixSetSilent $w.top.b 1995

    # Use a ButtonBox to hold the buttons.

    #

    tixButtonBox $w.box -orientation horizontal

    $w.box add ok     -text Ok     -underline 0 -command "cbx:okcmd $w" \

        -width 6

    $w.box add cancel -text Cancel -underline 0 -command "destroy $w" \

        -width 6

    pack $w.box -side bottom -fill x

    pack $w.top -side top -fill both -expand yes

}

proc cbx:select_year {args} {

    puts "you have selected \"$args\""

}

proc cbx:select_month {s} {

    puts "you have selected \"$s\""

}

proc cbx:okcmd {w} {

    global demo_month demo_year

    puts "The month selected is $demo_month of $demo_year"

    destroy $w

}

if {![info exists tix_demo_running]} {

    wm withdraw .

    set w .demo

    toplevel $w

    RunSample $w

        bind $w <Destroy> exit

}