projects / OpenSPARC-T2-SAM / blame
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| 54 | ||
| 55 | <H2><A NAME="SECTION0018140000000000000000"></A><A NAME="tkinter-basic-mapping"></A> | |
| 56 | <BR> | |
| 57 | 16.1.4 Mapping Basic Tk into Tkinter | |
| 58 | ||
| 59 | </H2> | |
| 60 | ||
| 61 | <P> | |
| 62 | Class commands in Tk correspond to class constructors in Tkinter. | |
| 63 | ||
| 64 | <P> | |
| 65 | <div class="verbatim"><pre> | |
| 66 | button .fred =====> fred = Button() | |
| 67 | </pre></div> | |
| 68 | ||
| 69 | <P> | |
| 70 | The master of an object is implicit in the new name given to it at | |
| 71 | creation time. In Tkinter, masters are specified explicitly. | |
| 72 | ||
| 73 | <P> | |
| 74 | <div class="verbatim"><pre> | |
| 75 | button .panel.fred =====> fred = Button(panel) | |
| 76 | </pre></div> | |
| 77 | ||
| 78 | <P> | |
| 79 | The configuration options in Tk are given in lists of hyphened tags | |
| 80 | followed by values. In Tkinter, options are specified as | |
| 81 | keyword-arguments in the instance constructor, and keyword-args for | |
| 82 | configure calls or as instance indices, in dictionary style, for | |
| 83 | established instances. See section <A href="tkinter-setting-options.html#tkinter-setting-options">16.1.6</A> on | |
| 84 | setting options. | |
| 85 | ||
| 86 | <P> | |
| 87 | <div class="verbatim"><pre> | |
| 88 | button .fred -fg red =====> fred = Button(panel, fg = "red") | |
| 89 | .fred configure -fg red =====> fred["fg"] = red | |
| 90 | OR ==> fred.config(fg = "red") | |
| 91 | </pre></div> | |
| 92 | ||
| 93 | <P> | |
| 94 | In Tk, to perform an action on a widget, use the widget name as a | |
| 95 | command, and follow it with an action name, possibly with arguments | |
| 96 | (options). In Tkinter, you call methods on the class instance to | |
| 97 | invoke actions on the widget. The actions (methods) that a given | |
| 98 | widget can perform are listed in the Tkinter.py module. | |
| 99 | ||
| 100 | <P> | |
| 101 | <div class="verbatim"><pre> | |
| 102 | .fred invoke =====> fred.invoke() | |
| 103 | </pre></div> | |
| 104 | ||
| 105 | <P> | |
| 106 | To give a widget to the packer (geometry manager), you call pack with | |
| 107 | optional arguments. In Tkinter, the Pack class holds all this | |
| 108 | functionality, and the various forms of the pack command are | |
| 109 | implemented as methods. All widgets in <tt class="module"><a href="module-Tkinter.html">Tkinter</a></tt> are | |
| 110 | subclassed from the Packer, and so inherit all the packing | |
| 111 | methods. See the <tt class="module"><a href="module-Tix.html">Tix</a></tt> module documentation for additional | |
| 112 | information on the Form geometry manager. | |
| 113 | ||
| 114 | <P> | |
| 115 | <div class="verbatim"><pre> | |
| 116 | pack .fred -side left =====> fred.pack(side = "left") | |
| 117 | </pre></div> | |
| 118 | ||
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