Question

关注帖子Showing JDialog in taskbar not working和Show JDialog on taskbar我试图在任务栏中显示我的JDialog。虽然它有效但行为很奇怪而且看起来不太好。

因此任务栏中会出现一个按钮，但当我点击它时，桌面左上角会出现一个小窗口。此窗口太小，其内容不可见。当我放大它时，我可以看到它是空的。我的JDialog仅在关闭此窗口后出现。

有没有办法摆脱这个窗口或嵌入我的JDialog？

public class SelectionDialog extends JDialog{

 private static final long serialVersionUID = 5677381647525913165L;
 private int response = JOptionPane.NO_OPTION;
 private SelectionFrame frame = null;
 public SelectionDialog(String attachmentName, Long processInstance, String processName) {
  super(new SelectionFrame("Selection"));
  setModalityType(ModalityType.TOOLKIT_MODAL);
  setVisible(true);
  toFront();
  try {
       UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
  } catch (ClassNotFoundException e) {
    e.printStackTrace();
  } catch (InstantiationException e) {
    e.printStackTrace();
  } catch (IllegalAccessException e) {
    e.printStackTrace();
  } catch (UnsupportedLookAndFeelException e) {
   e.printStackTrace();
  }  
    response = JOptionPane.showConfirmDialog(this.getParent(), "Would you like to apply the policy attachment " + attachmentName + " to current instance (" + processInstance + ") of process " + processName + " ?", "Confirm",
            JOptionPane.YES_NO_OPTION, JOptionPane.QUESTION_MESSAGE);
 }

 public void setVisible(boolean visible) {
    super.setVisible(visible);
    if (!visible) {
        ((SelectionFrame)getParent()).dispose();
    }
 }

 public int getUserSelection(){
    return response;
 }
}

框架代码：

public class SelectionFrame extends JFrame{

 private static final long serialVersionUID = -9063300247378170855L;

 SelectionFrame(String title) {
     super(title);
     setUndecorated(true);
     setVisible(true);
     setLocationRelativeTo(null);
 }
}

然后，在我的主应用程序中，我使用它：

SelectionDialog dialog = new SelectionDialog(attachmentDAO.getAttachmentName(), inst.getInstanceId(), this._processId);
int response = dialog.getUserSelection();
if (response == JOptionPane.NO_OPTION) {
 System.out.println("No button clicked");
} else if (response == JOptionPane.YES_OPTION) {
 System.out.println("Yes button clicked");
} else if (response == JOptionPane.CLOSED_OPTION) {
 //System.out.println("JOptionPane closed");
}
dialog.setVisible(false);

我在这里也包括了图片：！http://tinypic.com/view.php?pic=mslnyq&s=8#.Uvq17bTpKnc ！http://tinypic.com/view.php?pic=33mlbty&s=8

Answer 1

将null转换为任何类型都是无用的。将一个真实对象传递给构造函数。

另外，尝试向JDialog添加一些内容（也许是一个标签）......这样大小调整就不会成为问题（使用适当的布局管理器）。有关JDialog的位置，请参阅How do I center a JDialog on screen?或类似内容。

希望这有帮助。

在任务栏上显示JDialog看起来不太好

1 个答案: