I am hoping someone on the list can help me out. The following code
displays a transparent JFrame with a button. Clicking on the button
resizes the window. There are two problems I see when it displays and
have not been able to find a solution:
1. When the JFrame is initially displayed, there is no shadow cast by
the button. Changing focus away from the JFrame and back again causes
it to appear. Why does it not appear initially? FYI, moving the show()
to the AWT thread does not change the behaviour.
2. Repeatedly clicking the button to resize the JFrame will cause the
shadow to disappear occasionally. What causes this?
I am using Java build 1.4.2-38 and OS X v10.3.5. Any insights would be
most appreciated since these 2 problems are affecting a Swing UI I am
currently writing. Thanks for any help/insights. The Java code follows:
public ShadowTest() {
super("ShadowTest");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBackground(new Color(0.0f, 0.0f, 0.0f, 0.0f));
setResizable(false);
setSize(200, 100);
JButton b = new JButton("Click Me");
b.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (getHeight() == 100) {
setSize(200, 200);
} else {
setSize(200, 100);
}
}
});
getContentPane().add(b);
}
public static void main(String[] args) {
new ShadowTest().show();
}
}
Regards,
David Flett
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