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Initial commit of OpenSPARC T2 design and verification files.
[OpenSPARC-T2-DV] / tools / src / nas,5.n2.os.2 / lib / python / html / python / lib / node730.html
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17<title>16.1.6.8 The index Parameter</title>
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55<H3><A NAME="SECTION0018168000000000000000">
5616.1.6.8 The index Parameter</A>
57</H3>
58<P>
59A number of widgets require``index'' parameters to be passed. These
60are used to point at a specific place in a Text widget, or to
61particular characters in an Entry widget, or to particular menu items
62in a Menu widget.
63
64<P>
65<DL>
66<DT><STRONG>Entry widget indexes (index, view index, etc.)</STRONG></DT>
67<DD>Entry widgets have options that refer to character positions in the
68text being displayed. You can use these <tt class="module"><a href="module-Tkinter.html">Tkinter</a></tt> functions
69to access these special points in text widgets:
70
71<P>
72<DL>
73<DT><STRONG>AtEnd()</STRONG></DT>
74<DD>refers to the last position in the text
75
76<P>
77</DD>
78<DT><STRONG>AtInsert()</STRONG></DT>
79<DD>refers to the point where the text cursor is
80
81<P>
82</DD>
83<DT><STRONG>AtSelFirst()</STRONG></DT>
84<DD>indicates the beginning point of the selected text
85
86<P>
87</DD>
88<DT><STRONG>AtSelLast()</STRONG></DT>
89<DD>denotes the last point of the selected text and finally
90
91<P>
92</DD>
93<DT><STRONG>At(x<big>[</big>, y<big>]</big>)</STRONG></DT>
94<DD>refers to the character at pixel location <var>x</var>, <var>y</var> (with
95<var>y</var> not used in the case of a text entry widget, which contains a
96single line of text).
97</DD>
98</DL>
99
100<P>
101</DD>
102<DT><STRONG>Text widget indexes</STRONG></DT>
103<DD>The index notation for Text widgets is very rich and is best described
104in the Tk man pages.
105
106<P>
107</DD>
108<DT><STRONG>Menu indexes (menu.invoke(), menu.entryconfig(), etc.)</STRONG></DT>
109<DD><P>
110Some options and methods for menus manipulate specific menu entries.
111Anytime a menu index is needed for an option or a parameter, you may
112pass in:
113
114<UL>
115<LI>an integer which refers to the numeric position of the entry in
116the widget, counted from the top, starting with 0;
117</LI>
118<LI>the string <code>'active'</code>, which refers to the menu position that is
119currently under the cursor;
120</LI>
121<LI>the string <code>"last"</code> which refers to the last menu
122item;
123</LI>
124<LI>An integer preceded by <code>@</code>, as in <code>@6</code>, where the integer is
125interpreted as a y pixel coordinate in the menu's coordinate system;
126</LI>
127<LI>the string <code>"none"</code>, which indicates no menu entry at all, most
128often used with menu.activate() to deactivate all entries, and
129finally,
130</LI>
131<LI>a text string that is pattern matched against the label of the
132menu entry, as scanned from the top of the menu to the bottom. Note
133that this index type is considered after all the others, which means
134that matches for menu items labelled <code>last</code>, <code>active</code>, or
135<code>none</code> may be interpreted as the above literals, instead.
136</LI>
137</UL>
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177<span class="release-info">Release 2.4.2, documentation updated on 28 September 2005.</span>
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Full OpenSPARC design & verification tarball including full HDL.