如何在 GridBagLayout 中展开 JButton ？
我尝试将 GridBagConstraints 的权重设置为非零值：
gbc.weightx = gbc.weighty = 1.0;
但它只是扩展了按钮的宽度，我希望按钮也可以垂直扩展 .
这是我在网格中添加按钮的代码：
private void initGui(){
setTitle("Calculator");
setSize(400,500);
var grid = new GridBagLayout();
setLayout(grid);
GridBagConstraints gridCon = new GridBagConstraints();
gridCon.weightx = gridCon.weighty = 1.0;
gridCon.gridy = 0;
gridCon.gridx = 0;
gridCon.gridwidth = 4;
gridCon.fill = gridCon.HORIZONTAL;
add(text,gridCon);
gridCon.gridwidth = 1 ;
String names[] = {"+","-","/","*","="};
for(int i = 0;i < 5; i++){
opeButtons[i] = new JButton(names[i]);
}
gridCon.gridx = 3;
for( int y = 1; y < 6; y++ ){
gridCon.gridy = y;
add(opeButtons[y-1],gridCon);
}
for(int y = 2, i = 1; y < 5; y++ ){
for(int x = 0 ; x < 3; x++,i++) {
gridCon.gridx = x;
gridCon.gridy = y;
numButtons[i] = new JButton(Integer.toString(i));
add(numButtons[i],gridCon);
}
}
gridCon.gridx = 0;
gridCon.gridy = 1;
add(lb,gridCon);
gridCon.gridx = 1;
add(rb,gridCon);
gridCon.gridx = 2;
add(cb,gridCon);
numButtons[0] = new JButton("0");
gridCon.gridx = 0;
gridCon.gridy = 5;
gridCon.gridwidth = 2;
add(numButtons[0],gridCon);
gridCon.gridwidth = 1;
gridCon.gridx = 2;
add(decb,gridCon);
}
1 回答
更换
同