This demo shows how to configure the trigger of an item selection.
ZK Listbox supports right click selection as well, for more details, please refer to Component Reference

<zk>
	<zscript><![CDATA[
	List products = new ArrayList();
	for (int i = 1; i <= 5; i++) {
		products.add("Product #" + i);
	}	
]]></zscript>
	<listbox id="listbox" width="100%" nonselectableTags="" checkmark="true" multiple="true">
		<auxhead>
			<auxheader colspan="4">Quality Assurance</auxheader>
		</auxhead>
		<listhead>
			<listheader label="Product" width="100px" />
			<listheader label="Quality" width="100px"/>
			<listheader label="Comment"  />
			<listheader label="Confirm" width="80px"/>
		</listhead>
		<zk forEach="${products}">
			<listitem>
				<listcell label="${each}"></listcell>
				<listcell>
					<listbox mold="select" hflex="1">
						<listitem label="Perfect" />
						<listitem label="High" />
						<listitem label="Medium" selected="true"/>
						<listitem label="Low" />
						<listitem label="Poor" />
					</listbox>
				</listcell>
				<listcell>
					<textbox rows="2" hflex="1" />
				</listcell>
				<listcell>
					<button label="confirm" hflex="1">
						<attribute name="onClick"><![CDATA[
							self.setDisabled(true);
						]]></attribute>
					</button>
				</listcell>
				
			</listitem>
		</zk>
	</listbox>
</zk>

<zk>
	<groupbox closable="false" sclass="z-demo-config" >
		<caption label="Selection Control"></caption>
		<radiogroup>
			<attribute name="onCheck">
				listbox.setNonselectableTags(self.getSelectedItem().getValue());
			</attribute>
			<vlayout>
				<radio label="Whole items in Row" value="" selected="true"></radio>
				<radio label="Only checkmark" value="*"></radio>
			</vlayout>
		</radiogroup>
	</groupbox>

</zk>