81 lines
2.3 KiB
Ruby
81 lines
2.3 KiB
Ruby
# states.rb
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#
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# This demonstration script creates a listbox widget that displays
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# the names of the 50 states in the United States of America.
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#
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# listbox widget demo 'states' (called by 'widget')
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#
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# toplevel widget
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if defined?($states_demo) && $states_demo
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$states_demo.destroy
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$states_demo = nil
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end
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# demo toplevel widget
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$states_demo = TkToplevel.new {|w|
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title("Listbox Demonstration (states)")
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iconname("states")
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positionWindow(w)
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}
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base_frame = TkFrame.new($states_demo).pack(:fill=>:both, :expand=>true)
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# label
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msg = TkLabel.new(base_frame) {
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font $font
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wraplength '4i'
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justify 'left'
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text "A listbox containing the 50 states is displayed below, along with a scrollbar. You can scan the list either using the scrollbar or by scanning. To scan, press button 2 in the widget and drag up or down."
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}
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msg.pack('side'=>'top')
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# frame
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TkFrame.new(base_frame) {|frame|
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TkButton.new(frame) {
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text 'Dismiss'
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command proc{
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tmppath = $states_demo
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$states_demo = nil
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tmppath.destroy
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}
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}.pack('side'=>'left', 'expand'=>'yes')
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TkButton.new(frame) {
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text 'Show Code'
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command proc{showCode 'states'}
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}.pack('side'=>'left', 'expand'=>'yes')
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}.pack('side'=>'bottom', 'fill'=>'x', 'pady'=>'2m')
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# frame
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states_lbox = nil
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TkFrame.new(base_frame, 'borderwidth'=>'.5c') {|w|
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s = TkScrollbar.new(w)
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states_lbox = TkListbox.new(w) {
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setgrid 1
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height 12
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yscrollcommand proc{|first,last| s.set first,last}
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}
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s.command(proc{|*args| states_lbox.yview(*args)})
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s.pack('side'=>'right', 'fill'=>'y')
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states_lbox.pack('side'=>'left', 'expand'=>1, 'fill'=>'both')
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}.pack('side'=>'top', 'expand'=>'yes', 'fill'=>'y')
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ins_data = [
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'Alabama', 'Alaska', 'Arizona', 'Arkansas', 'California',
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'Colorado', 'Connecticut', 'Delaware', 'Florida', 'Georgia',
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'Hawaii', 'Idaho', 'Illinois',
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'Indiana', 'Iowa', 'Kansas', 'Kentucky', 'Louisiana', 'Maine', 'Maryland',
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'Massachusetts', 'Michigan', 'Minnesota', 'Mississippi', 'Missouri',
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'Montana', 'Nebraska', 'Nevada', 'New_Hampshire', 'New_Jersey', 'New_Mexico',
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'New_York', 'North_Carolina', 'North_Dakota',
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'Ohio', 'Oklahoma', 'Oregon', 'Pennsylvania', 'Rhode_Island',
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'South_Carolina', 'South_Dakota',
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'Tennessee', 'Texas', 'Utah', 'Vermont', 'Virginia', 'Washington',
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'West_Virginia', 'Wisconsin', 'Wyoming'
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]
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states_lbox.insert(0, *ins_data)
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