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向JText Field提供主要压力
原标题:Sending keypresses to JTextField

I m试图模拟文本输入JText Field。 我想补充一封信的长篇大篇大论,我说:

receiver.dispatchEvent(new KeyEvent(this,
  KeyEvent.KEY_TYPED, 0,
  this.shifted?KeyEvent.SHIFT_DOWN_MASK:0,
  KeyEvent.VK_UNDEFINED, text.charAt(0)));

但这似乎根本改变了内容。 我在这里失踪了什么?

最佳回答

看像我的一个虚拟键盘:-

几乎相同的法典对我有效。 我建议如下:

  1. 通过目标<代码>JText Field(在您的情形下,receiver)作为<编码>来源/代码>参数到KeyEvent的构建者,即:

    receiver.dispatchEvent(new KeyEvent(receiver,
        KeyEvent.KEY_TYPED, System.currentTimeMillis(),
        modifiers, KeyEvent.VK_UNDEFINED, keyChar);
    
  2. 确保目标<代码>JText Field。

<><>Edit>:

为了核实上述建议,我测试了这部法典:

Frame frame = new Frame();
TextField text = new TextField();
frame.add(text);
frame.pack();
frame.setVisible(true);

text.dispatchEvent(new KeyEvent(frame,
        KeyEvent.KEY_TYPED, 0,
        0,
        KeyEvent.VK_UNDEFINED,  H ));

但是,如果将最后一行修改如下(作为<条码><>源/代码>参数>的参数>,则该行不可行,则行文如下:

text.dispatchEvent(new KeyEvent(text,
        KeyEvent.KEY_TYPED, 0,
        0,
        KeyEvent.VK_UNDEFINED,  H ));
问题回答

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