@Override
public void paint(Graphics g, JComponent c) {
hasFocus = comboBox.hasFocus();
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
int w = c.getWidth();
int h = c.getHeight();
Image increase = new ImageIcon("img/comboboxback.png").getImage();
g2.drawImage(increase, 0, 0, 7, h, 0, 0, 7, 27, null);
g2.drawImage(increase, 7, 0, w - 21, h, 7, 0, 97, 27, null);
g2.drawImage(increase, w - 21, 0, w, h, 97, 0, 118, 27, null);
if (!comboBox.isEditable()) {
int x = (int) myComboBox.getLocation().getX();
int y = (int) myComboBox.getLocation().getY();
g2.setFont(new Font("黑体", Font.PLAIN, 15));
g2.drawString(myComboBox.getSelectedItem() + "", 5, 18);
}
}
