SWT添加键盘事件

  sendText.addKeyListener(new KeyListener(){
   public void keyPressed(KeyEvent e) {
    if(e.keyCode == SWT.CR){
     //让按键原有的功能失效
     e.doit = false;
     //执行你自己的事件
     MessageBox box = new MessageBox(new Shell(), SWT.ICON_INFORMATION | SWT.OK);
        box.setText("提示信息");
        box.setMessage("按回车键了");
        box.open();
    }
   }
   public void keyReleased(KeyEvent e) {}
   });

package
 znewtest;

import
 java.net.InetSocketAddress;
import
 java.text.DateFormat;
import
 java.text.SimpleDateFormat;
import
 java.util.Date;

import
 org.eclipse.swt.SWT;
import
 org.eclipse.swt.events.KeyEvent;
import
 org.eclipse.swt.events.KeyListener;
import
 org.eclipse.swt.events.SelectionEvent;
import
 org.eclipse.swt.events.SelectionListener;
import
 org.eclipse.swt.layout.GridData;
import
 org.eclipse.swt.layout.GridLayout;
import
 org.eclipse.swt.widgets.Button;
import
 org.eclipse.swt.widgets.Composite;
import
 org.eclipse.swt.widgets.Display;
import
 org.eclipse.swt.widgets.MessageBox;
import
 org.eclipse.swt.widgets.Shell;
import
 org.eclipse.swt.widgets.Text;

public
 
class
 keyWindow {
    Display display;
    Shell shell;
    GridLayout gridLayout;
    GridData layoutData;
    Composite composite;
    Text sendText;
    Text mesText;
    DateFormat formatter = new
 SimpleDateFormat(
"HH:mm:ss"
);
    public
 keyWindow(){
        display = Display.getDefault();
        shell = new
 Shell(display);
        //初始化shell
        initShell();

        layoutData = new
 GridData();
        layoutData.widthHint = 260
;
        layoutData.heightHint = 200
;
        mesText = new
 Text(shell, SWT.MULTI | SWT.WRAP
                |SWT.V_SCROLL |SWT.BORDER);
        mesText.setLayoutData(layoutData);

        layoutData = new
 GridData();
        layoutData.widthHint = 260
;
        layoutData.heightHint = 60
;
        sendText = new
 Text(shell, SWT.MULTI | SWT.WRAP
                |SWT.V_SCROLL |SWT.BORDER);
        sendText.setLayoutData(layoutData);
        sendText.setFocus();

        sendText.addKeyListener(new
 KeyListener(){
            public
 
void
 keyPressed(KeyEvent e) {
                if
(e.keyCode == SWT.CR){
                    //让按键原有的功能失效
                    e.doit = false
;
                    //执行你自己的事件
                    MessageBox box = new
 MessageBox(
new
 Shell(), SWT.ICON_INFORMATION | SWT.OK);
                    box.setText("提示信息"
);
                    box.setMessage("按回车键了"
);
                    box.open();
                }
            }
            public
 
void
 keyReleased(KeyEvent e) {}
            });
    }

    public
 
void
 open() {
        shell.open();
        while
 (!shell.isDisposed()) {
            if
 (!display.readAndDispatch()) {
                display.sleep();
            }
        }
    }

    /**
     * 设置窗口的标题、位置、大小、图标
     * @return Shell
     */
    public
 Shell initShell(){
        shell.setText("交谈"
);
        shell.setSize(400
, 
350
);
        shell.setLayout(new
 GridLayout());
        return
 shell;
    }
    /**
     * 向聊天区域添加信息
     * @param msg
     */
    public
 
void
 addString(String mes)
    {
        mesText.setText(mes + "/n"
 + mesText.getText());
    }

    public
 
static
 
void
 main(String[] args) {
        new
 keyWindow().open();
    }
}

 

完整示例

 

Color red = display.getSystemColor(SWT.COLOR_RED);
Font font = display.getSystemFont();
control.setFont(font)

Style

Description

SWT.WRAP	Wrap the text to fit the visible area
SWT.LEFT	Left-align the label
SWT.CENTER	Center-align the label
SWT.RIGHT	Right-align the label
SWT.SEPARATOR	Draw a separator instead of text or an image
SWT.HORIZONTAL	Draw the separator horizontally
SWT.VERTICAL	Draw the separator vertically
SWT.SHADOW_IN	Draw the separator with a "shadow in" effect
SWT.SHADOW_OUT`	Draw the separator

Separators

键盘事件类型

SWT.KeyDown	A key was pressed
SWT.KeyUp	A key was released

 

KeyEvent

KeyListener (and KeyAdapter)

keyPressed(KeyEvent) keyReleased(KeyEvent)

关于event中的character特殊键值

SWT.BS	退回 ('/b')
SWT.CR	回车 ('/r')
SWT.DEL	删除 ('/u007F')
SWT.ESC	ESC ('/u001B')
SWT.LF	换行 ('/n')
SWT.TAB	TAB跳格 ('/t')

 

SWT.CONTROL	<Ctrl>同 SWT.CTRL
SWT.SHIFT	<Shift>
SWT.ALT	<Alt>

评论

1 楼 zhengcai2 2012-09-14