问题描述
我在这里问已经问过(甚至回答过)的问题:为什么有些文本框不接受 Control + A 快捷键默认全选
I'm asking the question already asked (and even answered) here: Why are some textboxes not accepting Control + A shortcut to select all by default
但是这个答案对我不起作用.我有这个代码:
But that answer doesn't work for me. I have this code:
public class LoginForm : Form
{
private TextBox tbUsername;
public LoginForm()
{
tbUsername = new TextBox();
tbUsername.ShortcutsEnabled = true;
tbUsername.Multiline = false;
Controls.Add(tbUsername);
}
}
文本框出现，我可以在上面写字，我可以在上面剪切、复制和粘贴文本，没有任何问题.但是，当我尝试按 Ctrl+A 时，我只会听到类似于您尝试从空文本框中删除文本时听到的bling"(尝试一下)使用浏览器的地址栏).
The textbox shows up, I can write on it, I can cut, copy and paste text on it without any problems. But when I try to press Ctrl+A I only hear a "bling" similar to the bling that you hear if you try to erase text from an empty textbox (try it with your browser's address bar).
推荐答案
如其他答案所示，应该调用 Application.EnableVisualStyles().此外，TextBox.ShortcutsEnabled 应设置为 true.但是如果您的 TextBox.Multiline 已启用，那么 Ctrl+A 将不起作用(参见 MSDN 文档).使用 RichTextBox 可以解决这个问题.
Like other answers indicate, Application.EnableVisualStyles() should be called. Also the TextBox.ShortcutsEnabled should be set to true. But if your TextBox.Multiline is enabled then Ctrl+A will not work (see MSDN documentation). Using RichTextBox instead will get around the problem.
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