📄 checkbox_custicon.htm
字号:
<HTML>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<TITLE>Customizing the Icons in a JCheckBox Component (Java Developers Almanac Example)
</TITLE>
<META CONTENT="Patrick Chan" NAME="AUTHOR">
<META CONTENT="Code Examples from The Java Developers Almanac 1.4" NAME="DESCRIPTION">
<META CONTENT="Addison-Wesley/Patrick Chan" NAME="OWNER">
<META CONTENT="3/20/02" NAME="revision">
<META CONTENT="no-cache" HTTP-EQUIV="Pragma">
<LINK href="/almanac.css" media="screen" type="text/css" rel="stylesheet">
</HEAD>
<BODY>
<TABLE CELLSPACING="0" CELLPADDING="0" BORDER="0">
<TR>
<TD></TD>
</TR>
</TABLE>
<br>
<TABLE CELLSPACING="0" CELLPADDING="0" BORDER="0">
<TR>
<TD></TD>
</TR>
<TR>
<TD rowspan="3"><A HREF="/?l=ex"><IMG BORDER="0" ALIGN="BOTTOM" HSPACE="10" SRC="/egs/almanac14a.jpg"></A></TD><TD VALIGN="top">
<h1>The Java Developers Almanac 1.4</h1>
<br>
Order this book from <a href="/cgi-bin/scripts/redirect.pl?l=ex&url=http://www.amazon.com/exec/obidos/ASIN/0201752808/xeo">Amazon</a>.
</TD>
</TR>
<TR>
<TD align="right" valign="bottom">
<FORM method="get" action="/cgi-bin/search/find.pl">
<INPUT size="25" name="words" type="text"><INPUT value="Search" type="submit">
</FORM>
</TD>
</TR>
</TABLE>
<HR color="#6666cc">
<TABLE CELLSPACING="0" CELLPADDING="0" BORDER="0">
<TR>
<TD valign="top"><script type="text/javascript">
<!--
google_ad_client = "pub-6001183370374757";
google_ad_width = 120;
google_ad_height = 600;
google_ad_format = "120x600_as";
google_ad_channel = "4777242811";
google_ad_type = "text_image";
google_color_border = "FFFFFF";
google_color_bg = "FFFFFF";
google_color_link = "6666CC";
google_color_url = "6666CC";
google_color_text = "000000";
//--></script><script src="http://pagead2.googlesyndication.com/pagead/show_ads.js" type="text/javascript"></script></TD><TD> </TD><TD valign="top">
<DIV ALIGN="LEFT">
<A HREF="/">Home</A>
>
<A HREF="../index.html">List of Packages</A>
>
<A HREF="../javax.swing/pkg.html">javax.swing</A><font color="#666666" class="xsmall-font">
[141 examples]
</font>
>
<B><A HREF="../javax.swing/pkg.html#JCheckBox">JCheckBox</A></B><font color="#666666" class="xsmall-font">
[4 examples]
</font>
</DIV><P>
<h3>e755. Customizing the Icons in a JCheckBox Component</h3>
The icons used to depict the selected state of a checkbox component
can be customized. The simplest customization requires two icons, one
to depict the selected state and one to depict the unselected state.
<pre> // Set the unselected state icon
Icon unselIcon = new ImageIcon(<font color="#0066ff"><i>"nosel-icon.gif"</i></font>);
<font color="#0066ff"><i>checkbox</i></font>.setIcon(unselIcon);
// Set the selected state icon
Icon selIcon = new ImageIcon(<font color="#0066ff"><i>"sel-icon.gif"</i></font>);
<font color="#0066ff"><i>checkbox</i></font>.setSelectedIcon(selIcon);
</pre>
If the checkbox is disabled, grayed out icons are automatically generated
for the customized icons. Here's how to customize these disabled icons:
<pre> // Set the unselected state icon
Icon unselDisIcon = new ImageIcon(<font color="#0066ff"><i>"nosel-dis-icon.gif"</i></font>);
<font color="#0066ff"><i>checkbox</i></font>.setDisabledIcon(unselDisIcon);
// Set the selected state icon
Icon selDisIcon = new ImageIcon(<font color="#0066ff"><i>"sel-dis-icon.gif"</i></font>);
<font color="#0066ff"><i>checkbox</i></font>.setDisabledSelectedIcon(selDisIcon);
</pre>
By default, when the user clicks on a checkbox, the pressed icon (if set)
is displayed. Here's how to set it:
<pre> Icon pressedIcon = new ImageIcon(<font color="#0066ff"><i>"pres-icon.gif"</i></font>);
<font color="#0066ff"><i>checkbox</i></font>.setPressedIcon(pressedIcon);
</pre>
Finally, it is possible to display an icon when the cursor is moved
over the checkbox. This is called the rollover icon.
<pre> Icon rollIcon = new ImageIcon(<font color="#0066ff"><i>"roll-icon.gif"</i></font>);
<font color="#0066ff"><i>checkbox</i></font>.setRolloverIcon(rollIcon);
</pre>
<P><table width="600" CELLSPACING="0" CELLPADDING="2" BORDER="0">
<tr>
<td bgcolor="#6666cc" align="center"><font color="#ffffff">
<b>Related Examples</b></font></td>
</tr>
</table>
e752. <a class="eglink" href="checkbox_CheckBox.html?l=rel">
Creating a JCheckbox Component
</a>
<br>
e753. <a class="eglink" href="checkbox_SetState.html?l=rel">
Getting and Setting the State of a JCheckbox Component
</a>
<br>
e754. <a class="eglink" href="checkbox_AddIcon.html?l=rel">
Adding an Icon to the Label of a JCheckBox Component
</a>
<br>
<table width="600" CELLSPACING="0" CELLPADDING="2" BORDER="0">
<tr>
<td align="left">
<br>
See also:
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#Actions">
Actions
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#JButton">
JButton
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#JComboBox">
JComboBox
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#JDesktop%20and%20JInternalFrame">
JDesktop and JInternalFrame
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#JFrame,%20JWindow,%20JDialog">
JFrame, JWindow, JDialog
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#JLabel">
JLabel
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#JList">
JList
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#JProgressBar">
JProgressBar
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#JRadioButton">
JRadioButton
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#JScrollPane">
JScrollPane
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#JSlider">
JSlider
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#JSpinner">
JSpinner
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#JSplitPane">
JSplitPane
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#JTabbedPane">
JTabbedPane
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#JToolBar">
JToolBar
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#Keystrokes%20and%20Input%20Maps">
Keystrokes and Input Maps
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#Layout">
Layout
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#Look%20and%20Feel">
Look and Feel
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#Menus">
Menus
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#Progress%20Monitor">
Progress Monitor
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#The%20Screen">
The Screen
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#Tool%20Tips">
Tool Tips
</a>
<a class="eglink" href="/egs/javax.swing/pkg.html?l=rel#UI%20Default%20Values">
UI Default Values
</a>
</td>
</tr>
</table>
<br>
<br>
<FONT class="xsmall-font">
© 2002 Addison-Wesley.
</FONT></TD><TD> </TD><TD valign="top"><A href="http://compositesw.com/devzone?ref=javaalmanac"><IMG alt="Click Here" height="600" width="120" border="0" src="/csw_oad_120x600_final.gif"></A></TD>
</TR>
</TABLE>
</BODY>
<HEAD>
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<META CONTENT="NO-CACHE" HTTP-EQUIV="PRAGMA">
</HEAD>
</HTML>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -