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<td width="90%"><font size="4" face="Verdana, Arial, Helvetica"><b>Tk widgets</b></font></td><td width="200" align="right"><font size="1" face="Verdana, Arial, Helvetica"><nobr>   第 2 页（共7 页）</nobr></font></td>
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<p>There are remarkably few commands used in the creation
				of Tk widgets. 
				Better than half are variants of button or text widgets, as 
				you can see in the following list. Several of these items are 
				demonstrated in the next panel.</p>
<p>
<ul>
<li>
<b>button</b> - a simple widget with over twenty 
					configuration options from <i>anchor</i> and <i>font</i> 
					to <i>padx</i> and <i>relief</i>.</li>
<li>
<b>canvas</b> - canvas is a widget that can contain not 
					only other widgets, but an assortment of structured 
					graphics, including circles, lines, and polygons.</li>
<li>
<b>checkbutton</b> - creates a checkbox-style button 
					widget, which is linked to a variable.</li>
<li>
<b>entry</b> - builds a one-line text entry box.</li>
<li>
<b>frame</b> - frame is a widget used primarily 
					as either a container or spacer.</li>
<li>
<b>label</b> - creates a label object.</li>
<li>
<b>listbox</b> - creates a text string list box. Items are 
					added after widget definition.</li>
<li>
<b>menu</b> - a single multi-faceted widget that can contain 
					a variety of items in assorted menu styles.</li>
<li>
<b>menubutton</b> - provides a clickable toplevel interface 
					for dropdown menu implementations.</li>
<li>
<b>message</b> - creates a text display window widget with 
					features including justification and word wrap.</li>
<li>
<b>radiobutton</b> - creates a radio button that can be one 
					of a set associated with a specified variable.</li>
<li>
<b>scale</b> - creates a slider for selecting values within 
					a specified range and resolution.</li>
<li>
<b>scrollbar</b> - generates a widget (slider) for changing 
					the portion of material (usually text or a drawing) in an 
					associated widget.</li>
<li>
<b>text</b> - creates a widget that displays one or more 
					lines of text and allows that text to be edited.</li>
<li>
<b>toplevel</b> - creates a new toplevel (on the X desktop) 
					window.</li>
</ul>
</p>
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