Vb.net Capture Ctrl+C

Joseph picture Joseph · Sep 9, 2010 · Viewed 7.2k times · Source

I want to capture when someone uses CtrlC even when off focus. im using Visual Basic 2010.

Answer

David Anderson picture David Anderson · Sep 9, 2010

Okay, so I have a solution for you that I verified works. You will need a C# library though, and a little extra work is required, but not much. Create a C# class library and add a class called 'MyHooks' and add a reference to both System.Windows.Forms.dll and the library I linked you to. Your main program that will use this will reference this C# library and System.Windows.Forms.

namespace HookManager.Interface {
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Gma.UserActivityMonitor;
using System.Windows.Forms;

public static class MyHooks {

    public static void HookControlC(KeyEventHandler keyDown, KeyEventHandler keyUp) {
        HookManager.KeyDown += keyDown;
        HookManager.KeyUp += keyUp;
    }

}
}

Now in your program can do something like:

Imports hookmanager.interface
Imports System.Windows.Forms

Module Module1

Sub Main()
    MyHooks.HookControlC(AddressOf ControlC_KeyDown, AddressOf ControlC_KeyUp)

    While True
        Application.DoEvents()
    End While
End Sub

Private m_ControlKeyPressed As Boolean = False

Private Sub ControlC_KeyDown(ByVal sender As Object, ByVal e As KeyEventArgs)
    If e.KeyValue = 162 OrElse e.KeyValue = 163 Then
        m_ControlKeyPressed = True
    End If
    If m_ControlKeyPressed Then
        If e.KeyCode = Keys.C Then
            Console.WriteLine("You captured, control c!")
            Console.WriteLine(Clipboard.GetText())
        End If
    End If
End Sub

Private Sub ControlC_KeyUp(ByVal sender As Object, ByVal e As KeyEventArgs)
    If m_ControlKeyPressed Then
        If e.KeyValue = 162 OrElse e.KeyValue = 163 Then
            m_ControlKeyPressed = False
        End If
    End If
End Sub

End Module