我有一張桌子。如果我右鍵單擊我得到一個 JPopUpMenu 但在彈出視窗之前我想選擇完成右鍵單擊事件的行。這是我嘗試過的。
path_tbl.addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
System.out.println(e.getPoint());
Point point = e.getPoint();
int selectedRow = path_tbl.rowAtPoint(point);
path_tbl.setRowSelectionInterval(selectedRow, selectedRow);
}
});
在那種情況下，當我右鍵單擊時，我無法從控制臺獲得任何輸出。但是，當我左鍵單擊時，點會列印到控制臺。
java.awt.Point[x=105,y=76]
因此，此事件僅在我左鍵單擊時有效。如何通過右鍵單擊使此事件起作用？
uj5u.com熱心網友回復：
由于您需要自定義滑鼠行為，因此不應使用
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Vector;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.table.DefaultTableModel;
public final class Main {
public static void main(String[] args) {
new Main();
}
public Main() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
JFrame frame = new JFrame();
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
setLayout(new BorderLayout());
DefaultTableModel model = new DefaultTableModel(0, 10);
for (int row = 0; row < 10; row ) {
Vector data = new Vector(10);
for (int col = 0; col < 10; col ) {
String value = row "x" ((char) (col 'A'));
data.add(value);
}
model.addRow(data);
}
JPopupMenu menu = new JPopupMenu();
menu.add("Hello");
menu.add("This looks interesting");
menu.add("I like bi-planes");
JTable table = new JTable(model);
table.setComponentPopupMenu(menu);
table.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
if (SwingUtilities.isRightMouseButton(e)) {
Point point = e.getPoint();
int row = table.rowAtPoint(point);
if (!table.isRowSelected(row)) {
table.setRowSelectionInterval(row, row);
}
}
}
});
add(new JScrollPane(table));
}
}
}
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