![]() |
The Java Developers Almanac 1.4Order this book from Amazon. |
e755. Customizing the Icons in a JCheckBox ComponentThe 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.// Set the unselected state icon Icon unselIcon = new ImageIcon("nosel-icon.gif"); checkbox.setIcon(unselIcon); // Set the selected state icon Icon selIcon = new ImageIcon("sel-icon.gif"); checkbox.setSelectedIcon(selIcon);If the checkbox is disabled, grayed out icons are automatically generated for the customized icons. Here's how to customize these disabled icons: // Set the unselected state icon Icon unselDisIcon = new ImageIcon("nosel-dis-icon.gif"); checkbox.setDisabledIcon(unselDisIcon); // Set the selected state icon Icon selDisIcon = new ImageIcon("sel-dis-icon.gif"); checkbox.setDisabledSelectedIcon(selDisIcon);By default, when the user clicks on a checkbox, the pressed icon (if set) is displayed. Here's how to set it: Icon pressedIcon = new ImageIcon("pres-icon.gif"); checkbox.setPressedIcon(pressedIcon);Finally, it is possible to display an icon when the cursor is moved over the checkbox. This is called the rollover icon. Icon rollIcon = new ImageIcon("roll-icon.gif"); checkbox.setRolloverIcon(rollIcon);
e753. Getting and Setting the State of a JCheckbox Component e754. Adding an Icon to the Label of a JCheckBox Component © 2002 Addison-Wesley. |