在 Swing 中停止事件的默认行为
我在通过单击发送按钮或在一段代码的消息文本字段中按 Enter 调用的方法中有以下代码.
I have the following bit of code in a method called by clicking the send button, or pressing enter in the message text field in a piece of code.
// In class ChatWindow
private void messageTextAreaKeyPressed(java.awt.event.KeyEvent evt) { // Event handler created by Netbeans GUI designer to call this method.
if(evt.getKeyCode() == java.awt.event.KeyEvent.VK_ENTER) {
sendMessage();
}
}
public void sendMessage() {
String currentMessage = messageTextArea.getText();
addMessage("You", currentMessage);
app.sendMessage(currentMessage, 1);
messageTextArea.setText("");
}
最后一段代码使文本区域空白.但是,在按回车键发送消息后,文本框不是空的,而是包含换行符.
The last bit of code blanks the text area. However, after a message is sent by pressing the enter button, rather than being empty, the text box contains a newline.
我的猜测是,在我的事件处理程序运行后,将添加换行符.如何停止添加换行符?
My guess is that after my event handler runs, THEN the newline character is being added. How to I stop the newline being added?
推荐答案
尝试在调用 sendMessage()
private void messageTextAreaKeyPressed(java.awt.event.KeyEvent evt) {
if(evt.getKeyCode() == java.awt.event.KeyEvent.VK_ENTER) {
sendMessage();
evt.consume();
}
}
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