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参数：verticalSpan
在SWT中，verticalSpan用于指定控件占据的行数。例如：
GridData gridData = new GridData();gridData.verticalSpan = 100;final Text nameText = new Text(shell, SWT.BORDER);nameText.setLayoutData(gridData);
可以看出，verticalSpan决定了控件占据的行数。
以下是完整的示例代码：
public class LBMShow { public static void main(String args[]) { final Display display = Display.getDefault(); final Shell shell = new Shell(display); shell.setText("Hello"); GridLayout gridLayout = new GridLayout(2, true); GridData gridData = new GridData(); gridData.verticalSpan = 100; shell.setLayout(gridLayout); final Label nameLabel = new Label(shell, SWT.BORDER); nameLabel.setText("name: "); final Text nameText = new Text(shell, SWT.BORDER); nameText.setText("1"); nameLabel.setLayoutData(gridData); nameText.setLayoutData(gridData); final Label passwdLabel = new Label(shell, SWT.BORDER); passwdLabel.setText("password: "); final Text passwdText = new Text(shell, SWT.BORDER); passwdText.setText("2"); final Button button = new Button(shell, SWT.NONE); button.setText("登录"); //button.setBounds(32, 28, 58, 22); shell.open(); //shell.layout(); //消息循环 while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } }}
效果图如下：
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参数：horizontalSpan
horizontalSpan表示控件占据的列数，默认情况下每个控件占一列。如果设置为2，则控件会独占一行。
示例代码：
public class LBMShow { public static void main(String args[]) { final Display display = Display.getDefault(); final Shell shell = new Shell(display); shell.setText("Hello"); GridLayout gridLayout = new GridLayout(2, true); GridData gridData = new GridData(); gridData.horizontalSpan = 2; shell.setLayout(gridLayout); final Label nameLabel = new Label(shell, SWT.BORDER); nameLabel.setText("name: "); final Text nameText = new Text(shell, SWT.BORDER); nameText.setText("1"); nameLabel.setLayoutData(gridData); nameText.setLayoutData(gridData); final Label passwdLabel = new Label(shell, SWT.BORDER); passwdLabel.setText("password: "); final Text passwdText = new Text(shell, SWT.BORDER); passwdText.setText("2"); final Button button = new Button(shell, SWT.NONE); button.setText("登录"); //button.setBounds(32, 28, 58, 22); shell.open(); //shell.layout(); //消息循环 while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } }}
效果图如下：
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参数：grabExcessHorizontalSpace
grabExcessHorizontalSpace是一个布尔值，默认是false。它决定控件是否填充剩余的水平空间。
示例代码：
public class LBMShow { public static void main(String args[]) { final Display display = Display.getDefault(); final Shell shell = new Shell(display); shell.setText("Hello"); GridLayout gridLayout = new GridLayout(2, true); GridData gridData = new GridData(); gridData.grabExcessHorizontalSpace = true; shell.setLayout(gridLayout); final Label nameLabel = new Label(shell, SWT.BORDER); nameLabel.setText("name: "); final Text nameText = new Text(shell, SWT.BORDER); nameText.setText("1"); nameLabel.setLayoutData(gridData); nameText.setLayoutData(gridData); final Label passwdLabel = new Label(shell, SWT.BORDER); passwdLabel.setText("password: "); final Text passwdText = new Text(shell, SWT.BORDER); passwdText.setText("2"); final Button button = new Button(shell, SWT.NONE); button.setText("登录"); //button.setBounds(32, 28, 58, 22); shell.open(); //shell.layout(); //消息循环 while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } }}
效果图如下：
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参数：grabExcessVerticalSpace
grabExcessVerticalSpace表示控件是否填充垂直的剩余空间。
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示例代码：
public class LBMShow { public static void main(String args[]) { final Display display = Display.getDefault(); final Shell shell = new Shell(display); shell.setText("Hello"); GridLayout gridLayout = new GridLayout(2, true); GridData gridData = new GridData(); gridData.grabExcessVerticalSpace = true; shell.setLayout(gridLayout); final Label nameLabel = new Label(shell, SWT.BORDER); nameLabel.setText("name: "); final Text nameText = new Text(shell, SWT.BORDER); nameText.setText("1"); nameLabel.setLayoutData(gridData); nameText.setLayoutData(gridData); final Label passwdLabel = new Label(shell, SWT.BORDER); passwdLabel.setText("password: "); final Text passwdText = new Text(shell, SWT.BORDER); passwdText.setText("2"); final Button button = new Button(shell, SWT.NONE); button.setText("登录"); //button.setBounds(32, 28, 58, 22); shell.open(); //shell.layout(); //消息循环 while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } }}
效果图如下：
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参数：widthHint
widthHint用于设置控件的最小宽度。
示例代码：
public class LBMShow { public static void main(String args[]) { final Display display = Display.getDefault(); final Shell shell = new Shell(display); shell.setText("Hello"); GridLayout gridLayout = new GridLayout(2, true); GridData gridData = new GridData(); gridData.widthHint = 500; shell.setLayout(gridLayout); final Label nameLabel = new Label(shell, SWT.BORDER); nameLabel.setText("name: "); final Text nameText = new Text(shell, SWT.BORDER); nameText.setText("1"); nameLabel.setLayoutData(gridData); nameText.setLayoutData(gridData); final Label passwdLabel = new Label(shell, SWT.BORDER); passwdLabel.setText("password: "); final Text passwdText = new Text(shell, SWT.BORDER); passwdText.setText("2"); final Button button = new Button(shell, SWT.NONE); button.setText("登录"); //button.setBounds(32, 28, 58, 22); shell.open(); //shell.layout(); //消息循环 while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } }}
效果图如下：
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参数：heightHint
heightHint用于设置控件的最小高度。
示例代码：
public class LBMShow { public static void main(String args[]) { final Display display = Display.getDefault(); final Shell shell = new Shell(display); shell.setText("Hello"); GridLayout gridLayout = new GridLayout(2, true); GridData gridData = new GridData(); gridData.heightHint = 500; shell.setLayout(gridLayout); final Label nameLabel = new Label(shell, SWT.BORDER); nameLabel.setText("name: "); final Text nameText = new Text(shell, SWT.BORDER); nameText.setText("1"); nameLabel.setLayoutData(gridData); nameText.setLayoutData(gridData); final Label passwdLabel = new Label(shell, SWT.BORDER); passwdLabel.setText("password: "); final Text passwdText = new Text(shell, SWT.BORDER); passwdText.setText("2"); final Button button = new Button(shell, SWT.NONE); button.setText("登录"); //button.setBounds(32, 28, 58, 22); shell.open(); //shell.layout(); //消息循环 while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } }}
效果图如下：
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参数：horizontalAlignment和verticalAlignment
目前还没有研究出这两个参数的具体用法。
发布者：全栈程序员栈长，转载请注明出处：https://www.php.cn/link/016dda407fff9ed48128da45058b0366 原文链接：https://www.php.cn/link/c8377ad2a50fb65de28b11cfc628d75c
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