启动应用程序时设置JFrame的最大大小 [英] Setting the Maximum size of a JFrame while launching the application

问题描述

我想在启动应用程序时设置JFrame的最大大小. 问题是，如果屏幕分辨率更高，则我的帧会越来越大，但那时它不应该超过定义的最大范围，但是在低分辨率下，同样的情况也能很好地工作.

I want to set the Maximum size of the JFrame while launching the application. Problem is, if the screen resolution is more my frame is getting bigger , but at that time it should not cross the max range defined, but same case works fine with low resolution.

就像我希望我的框架最大为(500,500)一样，所以我写了这段代码:

Like I want my frame to be of Maximum of (500,500) , so I wrote this piece of code:

JFrame frame = new JFrame("FRAME TRANSPARENT");
frame.setSize((int)(Toolkit.getDefaultToolkit().getScreenSize().getWidth()-50), (int)(Toolkit.getDefaultToolkit().getScreenSize().getHeight()-150));
frame.setMaximizedBounds(new Rectangle(0,0 , 500, 500)); 
frame.setVisible(true);

即使我设置了Bound，JFrame也在考虑setSize方法，而且似乎忽略了setMaximizedBounds方法. 我已经尝试过使用setMaximumized方法，但是得到了相同的输出.

Even I set the Bound, the JFrame is considering setSize method and it seems to be that it is neglecting the setMaximizedBounds method. I already tried with setMaximumized method but got the same output.

推荐答案

我尝试了一下，您说对了，以至于setMaximumSize()无法正常工作.我对限制大小的要求通常由setResizable(false)固定，尽管我看到您对最小和最大大小的特定查询有所不同

I tried it and you're so right that setMaximumSize() doesn't work.. all these years couldn't get to know that!!! Mostly my requirements of limiting size is fixed by setResizable(false), although I see you have specific query of minimum and maximum sizes to be different

尽管如此，但仍为您解决了一个问题:

Worked on a solution for you though:

public class MaxSizeUI
{
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new MaxSizeUI().makeUI();
            }
        });
    }

    public void makeUI() {
        final JFrame frame = new JFrame("Sample Fram") {

            @Override
            public void paint(Graphics g) {
                Dimension d = getSize();
                Dimension m = getMaximumSize();
                boolean resize = d.width > m.width || d.height > m.height;
                d.width = Math.min(m.width, d.width);
                d.height = Math.min(m.height, d.height);
                if (resize) {
                    Point p = getLocation();
                    setVisible(false);
                    setSize(d);
                    setLocation(p);
                    setVisible(true);
                }
                super.paint(g);
            }
        };
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(300, 150);
        frame.setMaximumSize(new Dimension(400, 200));
        frame.setMinimumSize(new Dimension(200, 100));
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}

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