我被困在鼠標輪事件中,但不會觸發。我使用swt_awt bridge,所以我可以在我的RCP應用程序中使用swing組件。我測試了我能找到的所有東西,但沒有成功。因爲我的應用程序非常複雜,所以我創建了一個簡化版本的問題,這也可以幫助您確定是否希望幫助我。MouseWheel事件不會在SWT-AWT組件中觸發
現在這個簡化的問題是,我希望我的textarea(或scrollpane)捕捉mousewheel事件。但是這些事件已經消失。
import java.awt.Frame;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseWheelEvent;
import java.awt.event.MouseWheelListener;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import org.eclipse.swt.SWT;
import org.eclipse.swt.awt.SWT_AWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Shell;
public class Main {
protected Shell shell;
/**
* Launch the application.
* @param args
*/
public static void main(String[] args) {
try {
Main window = new Main();
window.open();
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Open the window.
*/
public void open() {
Display display = Display.getDefault();
createContents();
shell.open();
shell.layout();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
}
/**
* Create contents of the window.
*/
protected void createContents() {
shell = new Shell();
shell.setSize(450, 300);
shell.setText("SWT Application");
shell.setLayout(new GridLayout(3, false));
List list = new List(shell, SWT.BORDER);
list.setLayoutData(new GridData(GridData.FILL_VERTICAL));
list.add("Something");
Composite composite = new Composite(shell, SWT.EMBEDDED);
composite.setLayoutData(new GridData(GridData.FILL_BOTH));
Frame graphFrame = SWT_AWT.new_Frame(composite);
final JTextArea textarea = new JTextArea(60, 80);
JScrollPane scrollpane = new JScrollPane(textarea);
graphFrame.add(scrollpane);
textarea.addMouseListener(new MouseListener() {
@Override
public void mouseClicked(MouseEvent arg0) {
textarea.setText(textarea.getText() + "Mouse clicked.\n\r");
}
@Override
public void mouseEntered(MouseEvent arg0) {
textarea.setText(textarea.getText() + "Mouse is in.\n\r");
}
@Override
public void mouseExited(MouseEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void mouseReleased(MouseEvent arg0) {
// TODO Auto-generated method stub
}
});
textarea.addMouseWheelListener(new MouseWheelListener() {
@Override
public void mouseWheelMoved(MouseWheelEvent arg0) {
textarea.setText(textarea.getText() + "Mouse wheel activated.\n\r");
}
});
}
}
編輯:我發現,該小組能夠趕上AWT事件,但任何一類,即擴展JComponent的(就像我的組件,請)莫名其妙地失去這些事件。 我也設法創建一個醜陋的黑客,我點擊我的JComponent後,我強制我的swt複合材料。然後,我可以至少聽swt事件,並直接從swt事件監聽器使用我的JComponent。我仍然讚賞這個解決方案,我將能夠直接在JComponent上捕獲awt鼠標事件。