ibm-information-center/dist/eclipse/plugins/i5OS.ic.rzahh_5.4.0.1/vprts.htm

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<h1 class="topictitle1">VPrinters class</h1>
<div><p></p>
<div class="section"><p>A <a href="javadoc/com/ibm/as400/vaccess/VPrinters.html#NAVBAR_TOP"> VPrinters</a> object is a resource that represents
a list of printers for use in <a href="vpanes.htm#vpanes">AS400Panes</a>.</p>
</div>
<div class="section"><p>To use a VPrinters object, set the system property. Set this property
by using a constructor or through the <a href="javadoc/com/ibm/as400/vaccess/VPrinters.html#SETSYSTEM(COM.IBM.AS400.ACCESS.AS400)"> setSystem()</a> method. The VPrinters object
is then "plugged" into the AS400Pane as the root, using the pane's constructor
or setRoot() method.</p>
</div>
<div class="section"><p>A VPrinters object has another useful property for defining the
set of printers that is presented in AS400Panes. Use <a href="javadoc/com/ibm/as400/vaccess/VPrinters.html#SETPRINTERFILTER(JAVA.LANG.STRING)"> setPrinterFilter()</a> to specify a filter
that defines which printers should appear.</p>
</div>
<div class="section"><p>When AS400Pane and VPrinters objects are created, they are initialized
to a default state. The list of printers has not been loaded. To load the
contents, the caller must explicitly call the load() method on either object.</p>
</div>
<div class="section"><p>At run-time, a user can perform actions on any printer list or
printer by right-clicking it to display the context menu. The printer list
context menu can include an item called <strong>Properties</strong> that allows the
user to set the printer filter property, which can change the contents of
the list.</p>
</div>
<div class="section"><p>The printer context menu can include the following items:</p>
</div>
<div class="section"><ul><li><strong>Hold</strong> - holds the printer</li>
<li><strong>Release</strong> - releases the printer</li>
<li><strong>Start</strong> - starts the printer</li>
<li><strong>Stop</strong> - stops the printer</li>
<li><strong>Make available</strong> - makes the printer available</li>
<li><strong>Make unavailable</strong> - makes the printer unavailable</li>
<li><strong>Properties</strong> - displays properties of the printer and allows the
user to set filters</li>
</ul>
</div>
<div class="section"><p>Users can only access printers to which they are authorized. In
addition, the caller can prevent the user from performing actions by using
the setAllowActions() method on the pane.</p>
</div>
<div class="section"><p>The following example creates a VPrinters object and presents
it in an AS400TreePane</p>
</div>
<div class="section"><div class="p"><pre> // Create the VPrinters object.
// Assume that "system" is an AS400
// object created and initialized
// elsewhere.
VPrinters root = new VPrinters (system);
// Create and load an AS400TreePane
// object.
AS400TreePane treePane = new AS400TreePane (root);
treePane.load ();
// Add the tree pane to a frame.
// Assume that "frame" is a JFrame
// created elsewhere.
frame.getContentPane ().add (treePane);</pre>
<strong>Example</strong></div>
</div>
<div class="section"><p>Present print resources using an AS400ExplorerPane with a <a href="vprinterexample.htm#vprinterexample">VPrinters</a> object.
Figure 1 shows the VPrinters graphical user interface component:</p>
</div>
<div class="section"><p><strong>Figure 1: VPrinters GUI component</strong></p>
</div>
<div class="section"><p><img src="rzahh117.gif" alt="VPrinters GUI component" /></p>
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