- 1 year ago
Can't transform virtualKey into unicode
To transform a virtual key code into its corresponding Unicode character in PowerShell, you can use the Add-Type
cmdlet to add C# code that will handle the conversion. Here's an example script that demonstrates how to do this:
powershellAdd-Type -TypeDefinition @"
using System;
using System.Runtime.InteropServices;
public static class NativeMethods {
[DllImport("user32.dll")]
public static extern int ToUnicode(uint virtualKeyCode, uint scanCode, byte[] keyState, [Out, MarshalAs(UnmanagedType.LPWStr)] StringBuilder receivingBuffer, int bufferSize, uint flags);
}
public class VirtualKeyConverter {
public static string ToUnicodeString(uint virtualKeyCode) {
StringBuilder receivingBuffer = new StringBuilder(5);
byte[] keyState = new byte[256];
NativeMethods.ToUnicode(virtualKeyCode, 0, keyState, receivingBuffer, receivingBuffer.Capacity, 0);
return receivingBuffer.ToString();
}
}
"@
# Test the conversion
$virtualKeyCode = 0x41 # Virtual key code for 'A'
$unicodeCharacter = [VirtualKeyConverter]::ToUnicodeString($virtualKeyCode)
Write-Output $unicodeCharacter # Output: A
In this example, the VirtualKeyConverter
class provides a static method ToUnicodeString
that takes a virtual key code as input and returns the corresponding Unicode character as a string. The NativeMethods
class includes the ToUnicode
function from the user32.dll, which handles the actual conversion.
You can call the ToUnicodeString
method with any virtual key code (e.g., 0x41
for 'A', 0x42
for 'B', etc.), and it will return the corresponding Unicode character.
Note that not all virtual key codes have corresponding Unicode characters, and some keys may have different characters depending on the keyboard layout or input language. The example provided above works for basic alphanumeric keys, but you may need to handle other keys differently if you encounter non-alphanumeric characters.