Example of customizing shortcut keys in C# WinForm, _PHP tutorial

Example of customizing shortcut keys in C# WinForm,

Download the source code of this article: http://xiazai.jb51.net/201501/tools/cs-key-setting.rar

During the project development process, it is necessary to implement the custom shortcut key function in the software settings similar to Youdao Dictionary, as shown in the figure below:

When we press Ctrl+Alt+M one after another, the software will automatically display the shortcut keys in the text box.

The final effect is as shown below:

The core code is as follows:

Copy code The code is as follows:

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 = "";
//Set the text content of the current active control
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 = "";
}
}

Correspondence between e.KeyValue and characters

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

Next, set the _KeyDown and _KeyUp events for the textbox control respectively, and call the above two core functions in them.

As shown below:

Copy code The code is as follows:

private void textBox1_KeyDown(object sender, KeyEventArgs e)
{
KeyDown(sender, e);
}

private void textBox1_KeyUp(object sender, KeyEventArgs e)
{
KeyUp(sender, e);
}

http://www.bkjia.com/PHPjc/946746.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/946746.htmlTechArticleC# Example of customizing shortcut keys in WinForm. Download the source code of this article: http://xiazai.jb51.net /201501/tools/cs-key-setting.rar During the project development process, it is necessary to implement something like Youdao Dictionary...