Detecting Maximized Frames in v1.3

Question

Hi
Does anybody know a method for determining whether a JFrame is in the maximized state, in JDK1.3? I know that in 1.4 there is a getExtendedState() method for Frames, but not in 1.3! We need to detect whether out main frame is in the maximized state, as when we shut down our application, we need to record its size, position, and whether it was iconized, maximized, or just in the normal state. We can determine (using Frames getState() method) whether it was iconized or not, but not whether it was maxmized.
At the moment, I can't see a way out, but really need to find one. If anyone know of a method, no matter how obscure it may seem, can you let me know please! DukeDollars are on offer for a good solution (and i'll increase the number of Dukes available if someone can come up with a great solution).
Your help is really appreciated.
Alan

Answer 1

Hi,
you can do it the dirty way in non 1.4. environments using java.awt.Robot to place the mousepointer over the window's maximize button and let the robot press it.
I would suggest you place this best in your Components addNotify()-method, like this:
public void addNotify() {
super.addNotify(); //do the standard things
//threaded because Window may not yet be showing
Thread maximizerThread = new Thread() {
public void run() {
     try {
     java.awt.Robot robot = new java.awt.Robot(); //create a new robot
     while (true) {
     System.out.println("try to maximize window...");
     Window win = getMaintainer().getBNOWindow().getWindow();//get your Frame/Window here
     System.out.println("showing.. "+win.isShowing());
     if (win.isShowing()) {
     Point loc = win.getLocationOnScreen(); //location of window on screen
     Dimension size = win.getSize(); //size of window
     robot.mouseMove(loc.x+size.width-32, loc.y+13); //move mousepointer to location of window's maximize button
     robot.mousePress(InputEvent.BUTTON1_MASK); //press it
     robot.mouseRelease(InputEvent.BUTTON1_MASK); //release it
     System.out.println("maximized...");
     break; //break the loop and end thread
     //window is not yet showing, wait some time and try again
     else this.sleep(50);
     catch (Exception e) {} //catch all, this is no important function
maximizerThread.start();
}