我正在使用 GridLayout 试图在不隐藏任何内容的情况下使标签自动增长。这是一个简单的测试代码:每次按下按钮时,标签文本都会变大,但只有在水平调整窗口大小后,我才能得到正确的布局。有什么方法可以解决这个问题而不必调整窗口大小?我想我已经尝试了每一个属性,但我仍然无法让它工作,这让我发疯了!
这就是我得到的
这是应该的
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Shell;
public class UItest {
protected Shell shell;
private Label label;
public static void main(String[] args) {
try {
UItest window = new UItest();
window.open();
} catch (Exception e) {
e.printStackTrace();
}
}
public void open() {
Display display = Display.getDefault();
createContents();
shell.open();
shell.layout();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
protected void createContents() {
shell = new Shell();
shell.setSize(450, 300);
shell.setText("SWT Application");
shell.setLayout(new GridLayout(1, false));
Button button = new Button(shell, SWT.NONE);
button.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent arg0) {
label.setText(label.getText() + " " + label.getText());
}
});
button.setText("New Button");
label = new Label(shell, SWT.WRAP);
label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1));
label.setText("New Label");
List list = new List(shell, SWT.BORDER);
list.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
}
protected Label getLabel() {
return label;
}
}
谢谢你的时间。
解决了这些变化:
Button button = new Button(shell, SWT.NONE);
button.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent arg0) {
label.setText(label.getText() + " " + label.getText());
shell.layout(); // ADDED THIS
}
});
button.setText("New Button");
label = new Label(shell, SWT.WRAP);
// SET HORIZONTAL GRAB ON LABEL (FIRST TRUE IN GridData CONSTRUCTOR)
label.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, 1, 1));
label.setText("New Label");