Java GridBagLayout不会水平填充框架

Question

我正在为聊天程序编写GUI。我似乎无法让$('#calc').click(function(){ Math.GCD = function(numbers) { for (var i = 1 ; i < numbers.length ; i++){ if(numbers[0]==""){ $.each($('.inputField'),function(){ if($(this).val()!=""){ numbers[0] = $(this).val(); return false; } }); } if(numbers[0]!="" && numbers[i]!=""){ numbers[0] = twogcd(numbers[0], numbers[i]) } } return numbers[0]; if (numbers[i] === '' || numbers[i] === 0) { numbers[0] = twogcd(numbers[0], numbers[i]) }; function twogcd(first, second) { if (first < 0) first = -first; if (second < 0) second = -second; if (second > first) {var temp = first; first = second; second = temp;} while (true) { first %= second; if (first == 0) return second; second %= first; if (second == 0) return first; } } }; Math.LCM = function(first,second) { return first * (second / this.GCD(first, second)); }; var first = $("#first").val(); var second = $("#second").val(); var third = $("#third").val(); var numbers = [first,second,third]; var GCDresult = Math.GCD(numbers); alert(GCDresult); }); 水平和垂直填充框架，scroller水平填充框架。这是它的外观：

messageInput

Answer 1

  

让scroller水平和垂直填充框架，messageInput水平填充框架。

您想要同时填写两个方向，请设置

c.fill = GridBagConstraints.BOTH; // not HORIZONTAL

下一部分是修正权重，它将告诉每个组件分配多少空间（相对）：

    scroller = new JScrollPane(content);
    c.weightx = 0.5;
    c.weighty = 1.0;
    c.gridx = 0;
    c.gridy = 0;
    panel.add(scroller, c);

    messageInput = new JTextField();
    c.weightx = 0.5;
    c.weighty = 0.0;
    c.gridx = 0;
    c.gridy = 1;
    panel.add(messageInput, c);

weightx应为非零值，以允许组件水平拉伸。 weighty对于编辑器应该不为零，但对于文本字段不应该为零，这样它就不会占用额外的垂直空间（在这种情况下，您不需要设置c.fill = GridBagConstraints.HORIZONTAL对于它）。