一列布局不使用窗口的全宽 [英] One column layout does not use full width of window

问题描述

我想创建一个布局：2行，1列。第一排应占据窗户高度的70％，第二排应占窗户的30％。我通过使用 GridBagConstraints 的 weighty 属性实现此目的。

I would like to create a layout: 2 rows, 1 column. 1st row should occupy 70% height of the window and 2nd row 30% of the window. I achieve this by using weighty attribute of GridBagConstraints.

但是我的组件宽度有问题，因为当我调整应用程序窗口的大小时，组件保持在中心，它的宽度是恒定的，我得到一个白色的空格组件的左侧和右侧（即使我将填充设置为 BOTH ）。当我更改窗口的高度（组件调整得很好并填充窗口的完整高度）时不会发生此问题。

However I have problem with the width of my component, because when I resize application window the component remain in the center, its width is constant and I get a white spaces in the left and right of the component (even if I set fill to BOTH). This problem does not occur when I change the height of the window (components resize very well and fill full height of the window).

在我的约束下：

firstConstraints.gridx = 0;
firstConstraints.gridy = 0;  
firstConstraints.weighty = 0.7;
firstConstraints.fill = GridBagConstraints.BOTH;

secondConstraints.gridx = 0;
secondConstraints.gridy = 1;  
secondConstraints.weighty = 0.3;
secondConstraints.fill = GridBagConstraints.BOTH;

推荐答案

我认为你还需要：

gbc.weightx = 1.0;

请参阅如何使用GrigBagLayout 讨论权重x，重量约束。

See the secton from the Swing tutorial on How to Use a GrigBagLayout that talks about the weightx, weighty constraints.

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