Label

This documentation is for an older version of ZK. For the latest one, please click here.

A label component represents a piece of text.

<window border="normal"> 
	Hello World
</window>

If you want to add an attribute to a label, it has to be written as follows:

<window border="normal">
	<label style="color: red" value="Hello World" />
</window>

Tip: ZUML is XML, not HTML, so it doesn't accept  . However, you can use   instead.

The pre, hyphen, maxlength and multiline Properties

[since 5.0.0]

You can control how a label is displayed using the pre, multiline and maxlength properties. For example, if you specify pre to be true, all white spaces, such as new lines, spaces and tabs, are preserved.

pre	multiline	maxlenth	Description
true	any	any	All white spaces are preserved, including new lines, spaces and tabs.
false	true	any	New lines are preserved.
false	false	positive	The label only show its value up to the length of "maxlength".
false	false	0	The label is displayed regularly.

<window border="normal" width="300px">
	<vbox id="result">
		<label id="lb1" pre="true" />
		<label id="lb2" multiline="true" />
		<label id="lb3" maxlength="10" />
		<zscript><![CDATA[
			lb1.value = "this   thing   has   spaces.\nnext line.";
			lb2.value = "this   thing   no   space.\nnext line.";
			lb3.value = "this is more than 10 chars.";
		]]></zscript>
	</vbox>
</window>

[For ZK3 users]

This displaying rule is slightly different in ZK3.

hyphen	pre	maxlenth	Description
false	false	positive	Truncated the characters that exceeds the specified maxlength.
true	any	positive	If the length of a line exceeds maxlength, the line is hyphenated.
false	true	any	maxlength is ignored.
any	any	0	hyphen is ignored.

 
<window border="normal" width="100px">
	<vbox id="result">
	</vbox>
	<zscript><![CDATA[
		String[] s = {"this is 9", "this is ten more to show",
			"this framework", "performance is everything"};
    	for (int j = 0; j < s.length; ++j) {
			Label l = new Label(s[j]);
			l.maxlength = 9;
			l.hyphen = true;
			l.parent = result;
		}
    ]]>
    </zscript>
</window>

The multiline property is similar to the pre property, except it only preserves new lines and white space at the beginning of each line.