How properly maximize in jre 1.3? JFrame does it, I want to with JWindow.

Question

I notice that a JFrame (in 1.3), when I click to maximize it, resizes only up to the task bar. Yet I cannot find anywhere in the code where it figures out the size of the taskbar. Does anyone know where this code is and how I'd do ti for a JWindow?

Answer 1

OK, here ya go. Normally, a frame is maximized by calling setExtendedState(Frame.MAXIMIZED_BOTH);    public synchronized void setExtendedState(int state) {
        this.state = state;
        FramePeer peer = (FramePeer)this.peer;
        if (peer != null) {
            peer.setState(state);
    }Now, what is peer? OK    /**
     * Makes this Frame displayable by connecting it to
     * a native screen resource.  Making a frame displayable will
     * cause any of its children to be made displayable.
     * This method is called internally by the toolkit and should
     * not be called directly by programs.
     * @see Component#isDisplayable
     * @see #removeNotify
    public void addNotify() {
     synchronized (getTreeLock()) {
         if (peer == null) {
          peer = getToolkit().createFrame(this);
         FramePeer p = (FramePeer)peer;
         MenuBar menuBar = this.menuBar;
         if (menuBar != null) {
             mbManagement = true;
          menuBar.addNotify();
          p.setMenuBar(menuBar);
         p.setMaximizedBounds(maximizedBounds);
         super.addNotify();
    }Now, from the API for [url http://java.sun.com/j2se/1.4.2/docs/api/java/awt/Toolkit.html]ToolKit
public abstract class Toolkit
extends Object
This class is the abstract superclass of all actual implementations of the Abstract Window Toolkit. Subclasses of Toolkit are used to bind the various components to particular native toolkit implementations.
Most applications should not call any of the methods in this class directly. The methods defined by Toolkit are the "glue" that joins the platform-independent classes in the java.awt package with their counterparts in java.awt.peer. Some methods defined by Toolkit query the native operating system directly.
So, each platforms 'ToolKit' is included in the java executable. ToolKit.createFrame(); returns a native implementation of FramePeer (which is also abstract).