key-events

How to prevent JTable from returning to the first row when Tab is pressed?

由 社会主义新天地 提交于 2019-12-10 20:43:28
问题 How can I disable JTable's default behaviour of returning to the first row, when tab key is pressed in the last cell of the table? Instead the current cell should keep its focus. 回答1: The short answer: find the action that's bound to the Tab, wrap it into a custom action that delegates to the original only if not in the last cell and replace the original action with your custom implemenation. In code: KeyStroke keyStroke = KeyStroke.getKeyStroke("TAB"); Object actionKey = table.getInputMap

Java KeyListener: How to perform an action when two keys are pressed?

由 ≡放荡痞女 提交于 2019-12-10 20:35:15
问题 Please have a look at the following code import java.awt.event.*; import javax.swing.*; import java.awt.*; public class KeyCheck extends JFrame { private JButton check; private JPanel panel; private FlowLayout flow; public KeyCheck() { check = new JButton("Check"); check.addKeyListener(new KeyWork()); panel = new JPanel(); panel.setLayout(new FlowLayout()); panel.add(check); getContentPane().add(panel); } private class KeyWork extends KeyAdapter { public void keyPressed(KeyEvent k) { if(k

Replace keyAdapter with key binding

由 送分小仙女□ 提交于 2019-12-10 15:39:26
问题 How could I use key bindings in this code as key adapter doesn't work well? I already looked at the documentation of key binding but I can't understand how to do this. private class KeyLis extends KeyAdapter { @Override public void keyPressed(KeyEvent e) { switch (e.getKeyCode()) { case KeyEvent.VK_UP: up = true; break; case KeyEvent.VK_DOWN: down = true; break; case KeyEvent.VK_LEFT: left = true; break; case KeyEvent.VK_RIGHT: right = true; break; } } @Override public void keyReleased

Hotkeys creation for java swing form

由 回眸只為那壹抹淺笑 提交于 2019-12-08 14:19:49
问题 How to Create hot keys for form which is made by java swing?for example the form is create for student details means if I press ALT+N means the cursor will goto that name entering field.ALT+R means the cursor will goto Reg.no entering Field.same like as mark1(m1),mark(2) and so on.At that same time the form contains save,exit buttons if I press CTRL+S means the Save button will select.CTRL+X means the exit button will select.how to do this? 回答1: See How to Use Key Bindings, then use that

Android: What is the KeyEvent.KEYCODE for “?123” key on soft keyboard?

由 China☆狼群 提交于 2019-12-08 05:22:51
问题 I want to press "?123" key programmatically. But I don't know the KEYCODE for this symbol. And I also unable to find it. Can anybody know the KEYCODE for "?123" symbol on Soft Keyboard. 回答1: It's not an actual key press. It's just a way for the user to change the keyboard layout to be able to press on symbols etc. I think it's not even a guarantee that every keyboard has it. There are many custom keyboards on Android and they can make it any way they want it. You should think for yourself,

Qt sending keyPressEvent

由 懵懂的女人 提交于 2019-12-07 15:44:32
问题 I want to append chars to QLineEdit by sending KeyEvent. I'm using code like this: ui.myEdit->setFocus(); for(size_t i = 0; i < 10; ++i) { QKeyEvent keyPressed(QKeyEvent::KeyPress, 'a', Qt::NoModifier); QWidget::keyPressEvent(&keyPressed); // or //QApplication::sendEvent(QApplication::focusWidget(), &keyPressed); } Why there is no change in myEdit ? 回答1: You can change the change the text of QLineEdit simply by : ui->myEdit->setText(ui->myEdit->text().append("a")); But if you really want to

BlackBerry - KeyListener with global scope

由 南楼画角 提交于 2019-12-07 05:59:34
问题 I am new to BlackBerry App development. I want to be able to listen for keypress events whenever the BlackBerry (8900 in my case) is on and on all screens is this possible? If so, it would be great for someone to direct me in the right direction. I am already having a look at Interface KeyListener. import net.rim.device.api.system.*; Thanks all 回答1: Implement a keylistenerClass like: import model.Profile; import net.rim.device.api.system.KeyListener; import net.rim.device.api.ui.Keypad;

Qt sending keyPressEvent

由 南楼画角 提交于 2019-12-06 01:45:11
I want to append chars to QLineEdit by sending KeyEvent. I'm using code like this: ui.myEdit->setFocus(); for(size_t i = 0; i < 10; ++i) { QKeyEvent keyPressed(QKeyEvent::KeyPress, 'a', Qt::NoModifier); QWidget::keyPressEvent(&keyPressed); // or //QApplication::sendEvent(QApplication::focusWidget(), &keyPressed); } Why there is no change in myEdit ? You can change the change the text of QLineEdit simply by : ui->myEdit->setText(ui->myEdit->text().append("a")); But if you really want to change it by sending QKeyEvent you can try this : QKeyEvent * eve1 = new QKeyEvent (QEvent::KeyPress,Qt::Key

BlackBerry - KeyListener with global scope

由 梦想的初衷 提交于 2019-12-05 11:28:11
I am new to BlackBerry App development. I want to be able to listen for keypress events whenever the BlackBerry (8900 in my case) is on and on all screens is this possible? If so, it would be great for someone to direct me in the right direction. I am already having a look at Interface KeyListener. import net.rim.device.api.system.*; Thanks all Ali El-sayed Ali Implement a keylistenerClass like: import model.Profile; import net.rim.device.api.system.KeyListener; import net.rim.device.api.ui.Keypad; public final class ShortcutHandler implements KeyListener { public boolean keyChar(char key, int

Keyevent to click on Alert Dialog of Android screen

由 ぃ、小莉子 提交于 2019-12-03 17:08:44
Is there any way to simulate keyevent on "OK" or "CANCEL" buttons of Android dialogue box using adb commands? One indirect way is:- adb shell uiautomator dump /data/view.xml adb shell cat /data/view.xml calculate OK button coordinates from the relative coordinates given in the xml file. Then do adb shell input tap <x> <y> Hope works. Using AndroidViewClient/culebra you can simply do: run java -jar androidviewclient-2.3.25.jar culebra --verbose --verbose-comments --find-views-with-text=true --output=myscript.py edit myscript.py and add vc.findViewWithTextOrRaise('Cancel').touch() at the end
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