DefaulCellRender不允许选中和取消选中复选框？ [英] DefaulCellRender not allowing to check and uncheck checkbox?

问题描述

我使用的DefaultTreeCellRenderer不允许检查，取消选中。



类EmployeeData

{

init（）

{

//显示Jtree

Jtree.setCellRenderer（new CheckBoxRen（））;

}

}



类CheckBoxRen扩展DefaultTreeCellRendere

{

私有JCheckBox checkBox = null;



public CheckboxRenderer（）{

}



@覆盖

public Component getTreeCellRendererComponent（JTree tree，Object value，boolean selected，boolean expanded，boolean leaf，int row，boolean hasFocus）{



if（（value！= null）&&（value instanceof DefaultMutableTreeNode））{

checkBox.setSelected（true）;

}

return checkBox;

}

}



无法选中和取消选中复选框。

决方案

请参阅 http://docs.oracle.com/javase/ tutorial / uiswing / components / tree.html [ ^ ]。

I used DefaultTreeCellRenderer which is not allowint to check ,uncheck.

Class EmployeeData
{
init()
{
//Show Jtree
Jtree.setCellRenderer(new CheckBoxRen());
}
}

Class CheckBoxRen extends DefaultTreeCellRendere
{
private JCheckBox checkBox = null;

public CheckboxRenderer() {
}

@Override
public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus) {

if ((value != null) && (value instanceof DefaultMutableTreeNode)) {
checkBox.setSelected(true);
}
return checkBox;
}
}

not able to check and uncheck checkbox.

解决方案

See http://docs.oracle.com/javase/tutorial/uiswing/components/tree.html[^].

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