C# WinForm中实现快捷键自定义设置实例,
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项目开发过程中,需要实现类似有道词典的软件设置中的自定义快捷键功能,如下图所示:
当我们相继按下Ctrl+Alt+M的时候,软件就会自动将快捷键显示在文本框中。
最终的效果如下图所示:
核心代码如下所示:
复制代码 代码如下:
private void keyDown(object sender, KeyEventArgs e)
{
StringBuilder keyValue = new StringBuilder();
keyValue.Length = 0;
keyValue.Append("");
if (e.Modifiers != 0)
{
if (e.Control)
keyValue.Append("Ctrl + ");
if (e.Alt)
keyValue.Append("Alt + ");
if (e.Shift)
keyValue.Append("Shift + ");
}
if ((e.KeyValue >= 33 && e.KeyValue
(e.KeyValue >= 65 && e.KeyValue
(e.KeyValue >= 112 && e.KeyValue
{
keyValue.Append(e.KeyCode);
}
else if ((e.KeyValue >= 48 && e.KeyValue
{
keyValue.Append(e.KeyCode.ToString().Substring(1));
}
this.ActiveControl.Text = "";
//设置当前活动控件的文本内容
this.ActiveControl.Text = keyValue.ToString();
}
private void keyUp(object sender, KeyEventArgs e)
{
string str = this.ActiveControl.Text.TrimEnd();
int len = str.Length;
if (len >= 1 && str.Substring(str.Length - 1) == "+")
{
this.ActiveControl.Text = "";
}
}
e.KeyValue和字符的对应关系
字符 | e.KeyValue |
a-z|A-Z | 65-90 |
F1-F12 | 112-123 |
0-9 | 48-57 |
PageUp | 33 |
PageDown | 34 |
End | 35 |
Home | 36 |
左(←) | 37 |
上( ↑ ) | 38 |
右(→) | 39 |
下( ↓ ) | 40 |
接着,为textbox控件分别设置_KeyDown和_KeyUp事件,并在其中调用以上2个核心函数。
如下所示:
复制代码 代码如下:
private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
keyDown(sender, e);
}
private void textBox1_KeyUp(object sender, KeyEventArgs e)
{
keyUp(sender, e);
}

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