如何从JDialog中完全删除图标？(How to completely remove an icon from JDialog?)

如何从JDialog中完全删除图标？(How to completely remove an icon from JDialog?)

我正在创建一个对话框，用于显示文件复制的进度。 我想要做的是完全删除对话框的图标图像。

在提供应用程序的FrameView实例作为JDialog的构造函数的参数之前，我创建了这样的对话框，如下所示：

public class MyAppView extends FrameView { // ... @Action public void showOptiDialog() { // Creating modal opti' dialog JDialog optiDialog = new JDialog(this, true); // ... } }

所以，正如我所看到的，我需要一个父组件来使我的对话框没有图标。 在我目前的情况下（当我没有父框架视图时）我尝试了以下hack方法设置一个透明图标，但它不能像我期望的那样工作 - 我仍然看到对话框标题栏中的图标的空白区域和（这是什么最糟糕的）当我点击这个区域时，我仍然有一个弹出窗口。

JFrame dummyFrame = new JFrame(); Image icon = new BufferedImage(1, 1, BufferedImage.TYPE_IT_ARGB_PRE); dummyFrame.setIconImage(icon); JDialog myDialog = new JDialog(dummyFrame, true);

无论如何，必须可以删除图标。 工作示例是JOptionPane ：

JOptionPane.showMessage(null, "My message");

查看JOptionPane的源代码，可以发现当父组件设置为null时，静态Frame JOptionPane.getRootFrame()用于获取调用的父级：

public static Frame getRootFrame() throws HeadlessException { Frame sharedFrame = (Frame)SwingUtilities.appContextGet(sharedFrameKey); if (sharedFrame == null) { sharedFrame = SwingUtilities.getSharedOwnerFrame(); SwingUtilities.appContextPut(sharedFrameKey, sharedFrame); } return sharedFrame; }

所以我也尝试按如下方式创建对话框：

JDialog myDialog = new JDialog(JOptionPane.getRootFrame(), true);

但仍然没有成功。 当我尝试应用此代码片段时，我有一个标准的Java图标。

我的问题是：我做错了什么？ 如何通过JOptionPane完全删除JDialog的图标？

PS我使用JDK6。

I am creating a dialog for showing a progress of files' copying. What I want to do is to completely remove dialog's icon image.

I created such kind of dialogs before providing an application's instance of FrameView as an argument for JDialog's ctructor like this:

public class MyAppView extends FrameView { // ... @Action public void showOptiDialog() { // Creating modal opti' dialog JDialog optiDialog = new JDialog(this, true); // ... } }

So, as I can see, I need a parent component to make my dialog with no icon. In my current case (when I have no parent frame view) I tried the following hack method setting a transparent icon but it doesn't work as I expect - I still see an empty area for an icon in dialog's title bar and (what's the worst) I still have a popup window when I click this area.

JFrame dummyFrame = new JFrame(); Image icon = new BufferedImage(1, 1, BufferedImage.TYPE_IT_ARGB_PRE); dummyFrame.setIconImage(icon); JDialog myDialog = new JDialog(dummyFrame, true);

Anyway, it must be possible to remove an icon. The working example is JOptionPane:

JOptionPane.showMessage(null, "My message");

Looking at JOptionPane's source code one can find that static Frame JOptionPane.getRootFrame() is used to get a parent for the calls when parent component is set to null:

public static Frame getRootFrame() throws HeadlessException { Frame sharedFrame = (Frame)SwingUtilities.appContextGet(sharedFrameKey); if (sharedFrame == null) { sharedFrame = SwingUtilities.getSharedOwnerFrame(); SwingUtilities.appContextPut(sharedFrameKey, sharedFrame); } return sharedFrame; }

So I've also tried to create my dialog as follows:

JDialog myDialog = new JDialog(JOptionPane.getRootFrame(), true);

but there is still no success. I have a standard Java icon when I try to apply this code snippet.

And my question is: what am I doing wrong? How to completely remove an icon of JDialog as it is done by JOptionPane?

P.S. I use JDK6.

最满意答案

也许以下更符合你想要的方向。

JProgressBar pb = new JProgressBar(); JOptionPane op = new JOptionPane(pb, JOptionPane.PLAI_MESSAGE, JOptionPane.DEFAULT_OPTIO); JDialog dlg = (, "Progress"); dlg.setVisible(true);

The solution is to make a dialog non-resizable and then it will be without an icon with any parent window.

JDialog myDialog = new JDialog(new Frame(), true); myDialog.setResizable(false); myDialog.setVisible(true);

Unfortunately, if your dialog is to be resizable there is no way to remove an icon except of setting a transparent icon.