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making dll injector error object reference is required for the non static field method or property injector.SI(uint, string)

An object reference is required for the non-static field, method, or property 'injector.SI(uint, string)' I dont really understand what is the error or the mistake (Visual Studio C# windows form app it would be a really big help if anyone can fix this because I cant find the solution at all Ive been searching for quite a bit of time but still cant find any solution
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Forms;
using System.IO;
namespace Hoshiyomi.functions
{
public partial class injector : Form
{
public injector()
{
InitializeComponent();
Process[] PC = Process.GetProcesses().Where(p => (long)p.MainWindowHandle !=0).ToArray();
comboBox1.Items.Clear();
foreach (Process p in PC)
{
comboBox1.Items.Add(p.ProcessName);
}
}
private void injector_Load(object sender, System.EventArgs e)
{
this.FormBorderStyle = FormBorderStyle.FixedSingle;
}
private static string DLLP { get; set; }
private void flatButton1_Click(object sender, EventArgs e)
{
try
{
OpenFileDialog OFD = new OpenFileDialog();
OFD.InitialDirectory = #"C:\";
OFD.Title = "NotWeeb | Locate DLL";
OFD.DefaultExt = "dll";
OFD.Filter = "DLL Files (*.dll)|*.dll";
OFD.CheckFileExists = true;
OFD.CheckPathExists = true;
OFD.ShowDialog();
textBox1.Text = OFD.FileName;
DLLP = OFD.FileName;
}
catch (Exception ed)
{
MessageBox.Show(ed.Message);
}
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
DLLP = textBox1.Text;
}
private void flatButton3_Click(object sender, EventArgs e)
{
Process[] PC = Process.GetProcesses().Where(p => (long)p.MainWindowHandle != 0).ToArray();
comboBox1.Items.Clear();
foreach (Process p in PC)
{
comboBox1.Items.Add(p.ProcessName);
}
}
static readonly IntPtr INTPTR_ZERO = (IntPtr)0;
[DllImport("kernel32.dll", SetLastError = true)]
static extern IntPtr OpenProcess(uint dwDesiredAccess, int bInheritHandle, GraphicsUnit dwProcessId);
[DllImport("kernel32.dll", SetLastError = true)]
static extern int CloseHandle(IntPtr hObject);
[DllImport("kernel32.dll", SetLastError = true)]
static extern IntPtr GetProcAddress(IntPtr Module, string lpProcName);
[DllImport("kernel32.dll", SetLastError = true)]
static extern IntPtr GetModuleHandle(string lpModuleName);
[DllImport("kernel32.dll", SetLastError = true)]
static extern IntPtr VirtualAllocEx(IntPtr hProcess, IntPtr lpBaseAddress, byte[] Buffer, uint size, int lpNumberOfBytesWritten);
[DllImport("kernel32.dll", SetLastError = true)]
static extern int WriteProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, byte[] buffer, uint size, int lpNumberOfBytesWritten);
[DllImport("kernel32.dll", SetLastError = true)]
static extern IntPtr CreateRemoteThread(IntPtr hProcess, IntPtr lpThreadAttribute, IntPtr dwStackSize, IntPtr lpStartAddress, IntPtr lpParameter, uint dwCreationFlags, IntPtr lpThreadId);
public static int Inject(string PN, string DLLP)
{
if (!File.Exists(DLLP)) { return 1; } //1 not exist
uint _procId = 0;
Process[] _procs = Process.GetProcesses();
for (int i = 0; i < _procs.Length; i++)
{
if (_procs[i].ProcessName == PN)
{
_procId = (uint)_procs[i].Id;
}
}
if (_procId == 0) { return 2; } //2 not exist
if (!SI(_procId, DLLP))
{
return 3; //3 inject fail
}
return 4; //4 inject success
}
public bool SI(uint P, string DLLP)
{
IntPtr hndProc = OpenProcess((0x2 | 0x8 | 0x10 | 0x20 | 0x400), 1, P);
if (hndProc == INTPTR_ZERO) { return false; }
IntPtr lpAddress = VirtualAllocEx(hndProc, (IntPtr)null, (IntPtr)DLLP.Length, (0x1000 | 0x2000), 0x40);
if (lpAddress == INTPTR_ZERO)
{
return false;
}
byte[] bytes = Encoding.ASCII.GetBytes(DLLP);
if (WriteProcessMemory(hndProc, lpAddress, bytes, (uint)bytes.Length, 0) == 0)
{
return false;
}
CloseHandle(hndProc);
return true;
}
private IntPtr OpenProcess(int v1, int v2, uint p)
{
throw new NotImplementedException();
}
private IntPtr VirtualAllocEx(IntPtr hndProc, IntPtr intPtr, IntPtr length, int v1, int v2)
{
throw new NotImplementedException();
}
private void flatButton2_Click(object sender, EventArgs e)
{
int Result = Inject(comboBox1.Text, DLLP);
if (Result == 1)
{
MessageBox.Show("File doesn't exist");
}
else if (Result == 2)
{
MessageBox.Show("Process doesn't exist");
}
else if (Result == 3)
{
MessageBox.Show("Injection fail");
}
else if (Result == 4)
{
MessageBox.Show("Injection Succeeded");
}
}
}
}
enter image description here

Same MouseMove event on multiple controls

I have a User Control that contains one Panel filling the entire UC. Within the panel there is a PctureBox and a Label. My issue is trying to make it so that no matter which control my cursor moves across, the backcolor on the panel will change as an indicator. I've made it possible in this way (see code below), but I'm sure this isn't the best way of doing it? Keep in mind I'm going to add maybe a hundred of these, so I'm aiming for it to be fairly optimized.
private void PMain_MouseMove(object sender, MouseEventArgs e)
{
Panel pan = sender as Panel;
pan.BackColor = Color.DimGray;
}
private void PMain_MouseLeave(object sender, EventArgs e)
{
Panel pan = sender as Panel;
pan.BackColor = originalBackColor;
}
private void PbIcon_MouseMove(object sender, MouseEventArgs e)
{
pMain.BackColor = Color.DimGray;
}
private void PbIcon_MouseLeave(object sender, EventArgs e)
{
pMain.BackColor = originalBackColor;
}
private void LTitle_MouseMove(object sender, MouseEventArgs e)
{
pMain.BackColor = Color.DimGray;
}
private void LTitle_MouseLeave(object sender, EventArgs e)
{
pMain.BackColor = originalBackColor;
}

If I'm getting you correctly you are trying to do something like the following
in order to do that without having to do it for every control that your user control has, you can insert a thread WH_GETMESSAGE hook to your main thread and check WM_MOUSEHOVER, WM_MOUSELEAVE, WM_MOUSEMOVE messages for your user control and its children
Below is the code sample for UserControl1 which has one Panel filling the entire UC, one PictureBox (koala in it) and one Label (written label1 on it)
using System;
using System.Drawing;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Diagnostics;
namespace WindowsFormsApp1
{
public partial class UserControl1 : UserControl
{
const int WH_GETMESSAGE = 0x03;
const int WM_MOUSEHOVER = 0x02A1;
const int WM_MOUSELEAVE = 0x02A3;
const int WM_MOUSEMOVE = 0x0200;
private delegate int HookProc(int code, IntPtr wParam, IntPtr lParam);
[DllImport("user32.dll", EntryPoint = "SetWindowsHookEx", SetLastError = true)]
static extern IntPtr SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hMod, uint dwThreadId);
[DllImport("user32.dll")]
static extern bool UnhookWindowsHookEx(IntPtr hHook);
[DllImport("user32.dll")]
static extern int CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr GetModuleHandle(string lpModuleName);
[DllImport("user32.dll")]
static extern uint GetWindowThreadProcessId(IntPtr hWnd, IntPtr lpdwProcessId);
IntPtr _hook;
HookProc _hookProc;
public UserControl1()
{
InitializeComponent();
this.HandleCreated += (sender, e) =>
{
_hookProc = new HookProc(GetMsgHookProc);
_hook = SetWindowsHookEx(
WH_GETMESSAGE,
_hookProc,
GetModuleHandle(Process.GetCurrentProcess().MainModule.ModuleName),
GetWindowThreadProcessId(this.Handle, IntPtr.Zero));
};
this.Disposed += (sender, e) =>
{
UnhookWindowsHookEx(_hook);
};
}
private bool IsOurChild(Control ctl)
{
if (ctl == null)
return false;
if (ctl.Handle == this.Handle || ctl.Parent?.Handle == this.Handle)
return true;
return IsOurChild(ctl.Parent);
}
private int GetMsgHookProc(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode < 0)
return CallNextHookEx(_hook, nCode, wParam, lParam);
Message m = Marshal.PtrToStructure<Message>(lParam);
Control ctl = Control.FromHandle(m.HWnd);
if (IsOurChild(ctl))
{
if (m.Msg == WM_MOUSEHOVER || m.Msg == WM_MOUSEMOVE)
this.BackColor = Color.Red;
if (m.Msg == WM_MOUSELEAVE)
this.BackColor = Color.Blue;
}
return CallNextHookEx(_hook, nCode, wParam, lParam);
}
}
}

Maybe you can do like this. Example:
Designer
//SomeButton
this.SomeButton.Click += delegate(object sender, EventArgs e)
{ SomeUserControl_Event(sender, e); };
//SomeLabel
this.SomeButton.Click += delegate(object sender, EventArgs e)
{ SomeUserControl_Event(sender, e); };
Cs
private void SomeUserControl_Event(object sender, EventArgs e)
{
pMain.BackColor = originalBackColor;
}
Its only a example

intercept CTRL + Letter + Letter

I would like to intercept while I push CTRL + A + A
I read the article
How can I register a global hot key to say CTRL+SHIFT+(LETTER) using WPF and .NET 3.5?
and someone pasted a code originally posted here:
https://www.fluxbytes.com/csharp/how-to-register-a-global-hotkey-for-your-application-in-c/?unapproved=2279&moderation-hash=b3ec34d2621e0be051ed354f09c436d2#comment-2279
Anyway, I tried to change the code adding and "&" but this and some other attempt was wrong.
How can I get if I press CTRL + A + A ?
Thanks for the help!
using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;
namespace GlobalHotkeyExampleForm
{
public partial class Form1 : Form
{
private void Form1_Load(object sender, EventArgs e)
{
}
[DllImport("user32.dll")]
private static extern bool RegisterHotKey(IntPtr hWnd, int id, int fsModifiers, int vk);
[DllImport("user32.dll")]
private static extern bool UnregisterHotKey(IntPtr hWnd, int id);
enum KeyModifier
{
None = 0,
Alt = 1,
Control = 2,
Shift = 4,
WinKey = 8
}
public Form1()
{
InitializeComponent();
int id = 0; // The id of the hotkey.
RegisterHotKey(this.Handle, id, (int)KeyModifier.Control, Keys.A.GetHashCode()); // Register ctrl + a as global hotkey.
}
protected override void WndProc(ref Message m)
{
base.WndProc(ref m);
if (m.Msg == 0x0312)
{
/* Note that the three lines below are not needed if you only want to register one hotkey.
* The below lines are useful in case you want to register multiple keys, which you can use a switch with the id as argument, or if you want to know which key/modifier was pressed for some particular reason. */
Keys key = (Keys)(((int)m.LParam >> 16) & 0xFFFF); // The key of the hotkey that was pressed.
KeyModifier modifier = (KeyModifier)((int)m.LParam & 0xFFFF); // The modifier of the hotkey that was pressed.
int id = m.WParam.ToInt32(); // The id of the hotkey that was pressed.
MessageBox.Show("Hotkey has been pressed!");
// do something
}
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
UnregisterHotKey(this.Handle, 0); // Unregister hotkey with id 0 before closing the form. You might want to call this more than once with different id values if you are planning to register more than one hotkey.
}
private void button1_Click(object sender, EventArgs e)
{
this.Close();
}
}
}

This is the solution that I've found to listen Key Pressure.
I took the code from "Dylan's Web" and I changed something:
https://www.dylansweb.com/2014/10/low-level-global-keyboard-hook-sink-in-c-net/
This is the class with a couple of lines more:
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Windows.Input;
namespace DesktopWPFAppLowLevelKeyboardHook
{
public class LowLevelKeyboardListener
{
private const int WH_KEYBOARD_LL = 13;
private const int WM_KEYDOWN = 0x0100;
private const int WM_KEYUP = 0x101;
private const int WM_SYSKEYDOWN = 0x104;
private const int WM_SYSKEYUP = 0x105;
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr SetWindowsHookEx(int idHook, LowLevelKeyboardProc lpfn, IntPtr hMod, uint dwThreadId);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool UnhookWindowsHookEx(IntPtr hhk);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr GetModuleHandle(string lpModuleName);
public delegate IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam);
public event EventHandler<KeyPressedArgs> OnKeyPressed;
private LowLevelKeyboardProc _proc;
private IntPtr _hookID = IntPtr.Zero;
public LowLevelKeyboardListener()
{
_proc = HookCallback;
}
public void HookKeyboard()
{
_hookID = SetHook(_proc);
}
public void UnHookKeyboard()
{
UnhookWindowsHookEx(_hookID);
}
private IntPtr SetHook(LowLevelKeyboardProc proc)
{
using (Process curProcess = Process.GetCurrentProcess())
using (ProcessModule curModule = curProcess.MainModule)
{
return SetWindowsHookEx(WH_KEYBOARD_LL, proc, GetModuleHandle(curModule.ModuleName), 0);
}
}
private IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN || wParam == (IntPtr)WM_SYSKEYDOWN)
{
int vkCode = Marshal.ReadInt32(lParam);
int status = 1;
if (OnKeyPressed != null) { OnKeyPressed(this, new KeyPressedArgs(KeyInterop.KeyFromVirtualKey(vkCode), status)); }
}
else if (nCode >= 0 && wParam == (IntPtr)WM_KEYUP || wParam == (IntPtr)WM_SYSKEYUP)
{
int vkCode = Marshal.ReadInt32(lParam);
int status = 0;
if (OnKeyPressed != null) { OnKeyPressed(this, new KeyPressedArgs(KeyInterop.KeyFromVirtualKey(vkCode), status)); }
}
return CallNextHookEx(_hookID, nCode, wParam, lParam);
}
}
public class KeyPressedArgs : EventArgs
{
public Key KeyPressed { get; private set; }
public int KeyStatus { get; private set; }
public KeyPressedArgs(Key key, int status)
{
KeyPressed = key;
KeyStatus = status;
}
}
}
This is the Form:
using DesktopWPFAppLowLevelKeyboardHook;
using System;
using System.Windows.Forms;
namespace AppLowLevelKeyboardHook
{
public partial class Form1 : Form
{
private LowLevelKeyboardListener _listener;
public int ctrlStatus;
public int cStatus;
public Form1()
{
InitializeComponent();
}
private void Window_Loaded(object sender, EventArgs e)
{
_listener = new LowLevelKeyboardListener();
_listener.OnKeyPressed += _listener_OnKeyPressed;
_listener.HookKeyboard();
}
private void _listener_OnKeyPressed(object sender, KeyPressedArgs e)
{
this.textBox_DisplayKeyboardInput.Text += e.KeyPressed.ToString() + e.KeyStatus.ToString();
if (e.KeyStatus == 1 && (e.KeyPressed.ToString() == "LeftCtrl" || e.KeyStatus.ToString() == "RightCtrl"))
{
if (ctrlStatus == 0)
{
ctrlStatus = ctrlStatus + 1;
timer1.Start();
}
}
else if (e.KeyStatus == 1 && e.KeyPressed.ToString() == "C")
{
if (ctrlStatus == 1 && (cStatus == 0 || cStatus == 2))
{
cStatus = cStatus + 1;
}
}
//no need to wait that CTRL will be released
//else if (e.KeyStatus == 0 && (e.KeyPressed.ToString() == "LeftCtrl" || e.KeyStatus.ToString() == "RightCtrl"))
//{
// if (ctrlStatus == 1)
// {
// ctrlStatus = ctrlStatus + 1;
// }
//}
else if (e.KeyStatus == 0 && e.KeyPressed.ToString() == "C")
{
if (ctrlStatus == 1)
{
if (cStatus == 1 || cStatus == 3)
{
cStatus = cStatus + 1;
}
}
}
}
private void timer1_Tick(object sender, EventArgs e)
{
if ((ctrlStatus == 1) && cStatus == 3 || cStatus == 4) //no need to wait that CTRL will be released (ctrlStatus == 2)
{
//do something
label1.Text = "";
label1.Refresh();
label1.Text = Clipboard.GetText(TextDataFormat.UnicodeText);
//\do something
}
ctrlStatus = 0;
cStatus = 0;
timer1.Stop();
}
private void Window_Closing(object sender, FormClosingEventArgs e)
{
_listener.UnHookKeyboard();
}
}
}
PS: originally it was WPF app but mine it's a WFA and KeyInterop is not included.
So I simply added a reference assembly to WindowsBase.dll

Yesterday I'm back on this question and finally, I did what I was searching to do but changing the strategy because with the upper code I didn't really found a solution for my target. I'm going to report why I think it can be useful to someone else and maybe someone has a different solution.
So, on the upper code, I tried to intercept CTRL+C+C and than get what use copy on the Windows Clipboard. But here it's the problem, that code registers the shortkey, so any other software can't continue to use CTRL+C. I tried to unregister the shortkey after to have cached that CTRL+C has been pressed but I've found only problems. Anyway, I don't like "to stole" a shortkey to another app, I prefer to "listen" key while they are pressed.
So here it follows the code with some comments (I'll paste the solution that I've found "listening keys pressed" adding a new answer).
using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Text;
namespace GlobalHotkeyExampleForm
{
public partial class Form1 : Form
{
private void Form1_Load(object sender, EventArgs e)
{
}
public int shortkey = 0;
[DllImport("user32.dll")]
private static extern bool RegisterHotKey(IntPtr hWnd, int id, int fsModifiers, int vk);
[DllImport("user32.dll")]
private static extern bool UnregisterHotKey(IntPtr hWnd, int id);
enum KeyModifier
{
None = 0,
Alt = 1,
Control = 2,
Shift = 4,
WinKey = 8
}
public Form1()
{
InitializeComponent();
int id = 0; // The id of the hotkey.
RegisterHotKey(this.Handle, id, (int)KeyModifier.Control, Keys.C.GetHashCode()); // Register CTRL + C as global hotkey.
}
protected override void WndProc(ref Message m)
{
base.WndProc(ref m);
if (m.Msg == 0x0312)
{
/* Note that the three lines below are not needed if you only want to register one hotkey.
* The below lines are useful in case you want to register multiple keys, which you can use a switch with the id as argument, or if you want to know which key/modifier was pressed for some particular reason. */
Keys key = (Keys)(((int)m.LParam >> 16) & 0xFFFF); // The key of the hotkey that was pressed.
KeyModifier modifier = (KeyModifier)((int)m.LParam & 0xFFFF); // The modifier of the hotkey that was pressed.
int id = m.WParam.ToInt32(); // The id of the hotkey that was pressed.
if (modifier == KeyModifier.Control && key == Keys.C)
{
shortkey = shortkey + 1;
label1.Text = (shortkey.ToString());
//if I enebale this code it works partially. The UnregisterHotKey and RegisterHotKey works perfectly and alone also SendKeys works prefectly, but together it doesn't:
//it doesn't recognize that CTRL is still pressed and I don't want to do CTRL C + CTRL C and I don't like "to stole" the shortkey from other apps!;
//I tried to use SendKeys to resend CTRL C or onlt CTRL but it doens't work and it creates only Register problems
//UnregisterHotKey(this.Handle, 0); //unregister the hotkey catching
//SendKeys.Send("^c"); //send key to active application (it doesn't matter if this is the application)
////register the hotkey catching as C only
//RegisterHotKey(this.Handle, id, (int)KeyModifier.Control, Keys.C.GetHashCode());
//SendKeys.Send("^c");
//SendKeys.Send("^");
timer1.Start();
}
//MessageBox.Show("Hotkey has been pressed!");
// do something
}
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
UnregisterHotKey(this.Handle, 0); // Unregister hotkey with id 0 before closing the form. You might want to call this more than once with different id values if you are planning to register more than one hotkey.
}
private void button1_Click(object sender, EventArgs e)
{
this.Close();
}
private void timer1_Tick(object sender, EventArgs e)
{
if (shortkey == 2)
{
string returnMyText = Clipboard.GetText(TextDataFormat.Text);
}
shortkey = 0;
timer1.Stop();
}
}
}

How to detect CTRL+keypress shortcut at any time in C#

In a C# Windows Form I would like transcode information:
when user press CTRL+I, the app detect the key press combination, it takes the code in the clipboard and transcode it.
I find out this code:
protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
switch (msg.Msg)
{
case 0x100:
case 0x104:
switch (keyData)
{
case Keys.Control | Keys.I:
MessageBox.Show("Ctrl + I pressed");
break;
}
break;
}
return base.ProcessCmdKey(ref msg, keyData);
}
This works fine when windows form has focus.
I would like detect the combination when the app is minimized as tray icon.
SOLUTION:
keyboardhook.cs:
using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;
namespace TrayIconForm
{
public static class Constants
{
public const int NOMOD = 0x0000;
public const int ALT = 0x0001;
public const int CTRL = 0x0002;
public const int SHIFT = 0x0004;
public const int WIN = 0x0008;
public const int WM_HOTKEY_MSG_ID = 0x0312;
}
public class KeyHandler
{
[DllImport("user32.dll")]
private static extern bool RegisterHotKey(IntPtr hWnd, int id, int fsModifiers, int vk);
[DllImport("user32.dll")]
private static extern bool UnregisterHotKey(IntPtr hWnd, int id);
private int modifier;
private int key;
private IntPtr hWnd;
private int id;
public KeyHandler(int modifier, Keys key, Form form)
{
this.modifier = modifier;
this.key = (int)key;
this.hWnd = form.Handle;
id = this.GetHashCode();
}
public override int GetHashCode()
{
return modifier ^ key ^ hWnd.ToInt32();
}
public bool Register()
{
return RegisterHotKey(hWnd, id, modifier, key);
}
public bool Unregiser()
{
return UnregisterHotKey(hWnd, id);
}
}
}
Information.cs (Form):
using System;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace TrayIconForm
{
public partial class Information : Form
{
private KeyHandler ghk;
public Information()
{
InitializeComponent();
ghk = new KeyHandler(Constants.CTRL, Keys.I, this);
ghk.Register();
}
private void HandleHotkey()
{
string s = Get_Copy();
notifyIcon1.BalloonTipText = s;
notifyIcon1.BalloonTipTitle = "You have pressed CTRL+i";
notifyIcon1.BalloonTipIcon = ToolTipIcon.Info;
notifyIcon1.Visible = true;
notifyIcon1.ShowBalloonTip(500);
}
protected override void WndProc(ref Message m)
{
if (m.Msg == Constants.WM_HOTKEY_MSG_ID)
HandleHotkey();
base.WndProc(ref m);
}
private string Get_Copy()
{
string r;
// Retrieves data from Clipboard
IDataObject iData = Clipboard.GetDataObject();
// Is Data Text?
if (iData.GetDataPresent(DataFormats.Text))
r = (String)iData.GetData(DataFormats.Text);
else
r = "nothing";
return r;
}
private void Information_Resize(object sender, EventArgs e)
{
if (FormWindowState.Minimized == this.WindowState)
{
notifyIcon1.BalloonTipText = "My application still working...";
notifyIcon1.BalloonTipTitle = "My Sample Application";
notifyIcon1.BalloonTipIcon = ToolTipIcon.Info;
notifyIcon1.Visible = true;
notifyIcon1.ShowBalloonTip(500);
this.Hide();
}
else if (FormWindowState.Normal == this.WindowState)
{
notifyIcon1.Visible = false;
}
}
}
}

This works just instantiate it, subscibe to the event and you are done. It s not my script. A while ago I searched long for this but I found it and it works great. There were you subscribed to the event you can look if the pressed key (stored in the event args) is your key and when it is you can look with Keyboard.iskeydown(key.lctrl) if control is pressed to and then you can do what the combination should do.
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Windows.Input;
namespace <yournamespace>
{
public class LowLevelKeyboardListener
{
private const int WH_KEYBOARD_LL = 13;
private const int WM_KEYDOWN = 0x0100;
private const int WM_SYSKEYDOWN = 0x0104;
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr SetWindowsHookEx(int idHook, LowLevelKeyboardProc lpfn, IntPtr hMod, uint dwThreadId);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool UnhookWindowsHookEx(IntPtr hhk);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, IntPtr lParam);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr GetModuleHandle(string lpModuleName);
public delegate IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam);
public event EventHandler<KeyPressedArgs> OnKeyPressed;
private LowLevelKeyboardProc _proc;
private IntPtr _hookID = IntPtr.Zero;
public LowLevelKeyboardListener()
{
_proc = HookCallback;
}
public void HookKeyboard()
{
_hookID = SetHook(_proc);
}
public void UnHookKeyboard()
{
UnhookWindowsHookEx(_hookID);
}
private IntPtr SetHook(LowLevelKeyboardProc proc)
{
using (Process curProcess = Process.GetCurrentProcess())
using (ProcessModule curModule = curProcess.MainModule)
{
return SetWindowsHookEx(WH_KEYBOARD_LL, proc, GetModuleHandle(curModule.ModuleName), 0);
}
}
private IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN || wParam == (IntPtr)WM_SYSKEYDOWN)
{
int vkCode = Marshal.ReadInt32(lParam);
if (OnKeyPressed != null) { OnKeyPressed(this, new KeyPressedArgs(KeyInterop.KeyFromVirtualKey(vkCode))); }
}
return CallNextHookEx(_hookID, nCode, wParam, lParam);
}
}
public class KeyPressedArgs : EventArgs
{
public Key KeyPressed { get; private set; }
public KeyPressedArgs(Key key)
{
KeyPressed = key;
}
}
}

[DllImport("user32.dll")]
public static extern int GetAsyncKeyState(Keys vKeys);
then
var ctrl = GetAsyncKeyState(Keys.ControlKey) & 0x8000;
var key = GetAsyncKeyState(Keys.F10) & 0x8000; //F10 for example
if(ctrl != 0 && key != 0)
{
//do sth
}

Global hotkey in console application

Does anyone know how to use the RegisterHotKey/UnregisterHotKey API calls in a console application? I assume that setting up/removing the hotkey is the same, but how do I get the call back when the key was pressed?
Every example I see is for Winforms, and uses protected override void WndProc(ref Message m){...}, which isn't available to me.
update: what I have is below, but the event is never hit. I thought it could be because when you load ConsoleShell it does block further execution, but even if I put SetupHotkey into a different thread nothing happens. Any thoughts?
class Program
{
static void Main(string[] args)
{
new Hud().Init(args);
}
}
class Hud
{
int keyHookId;
public void Init(string[] args)
{
SetupHotkey();
InitPowershell(args);
Cleanup();
}
private void Cleanup()
{
HotKeyManager.UnregisterHotKey(keyHookId);
}
private void SetupHotkey()
{
keyHookId = HotKeyManager.RegisterHotKey(Keys.Oemtilde, KeyModifiers.Control);
HotKeyManager.HotKeyPressed += new EventHandler<HotKeyEventArgs>(HotKeyManager_HotKeyPressed);
}
void HotKeyManager_HotKeyPressed(object sender, HotKeyEventArgs e)
{
//never executed
System.IO.File.WriteAllText("c:\\keyPressed.txt", "Hotkey pressed");
}
private static void InitPowershell(string[] args)
{
var config = RunspaceConfiguration.Create();
ConsoleShell.Start(config, "", "", args);
}
}

What you can do is Create a hidden window in your Console application which is used to handle the hotkey notification and raise an event.
The code HERE demonstrates the principal. HERE is an article on handling messages in a Console application, using this you should be able to enhance HotKeyManager to run in a Console Application.
The following update to the HotKeyManager creates a background thread which runs the message loop and handles the windows messages.
using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Threading;
namespace ConsoleHotKey
{
public static class HotKeyManager
{
public static event EventHandler<HotKeyEventArgs> HotKeyPressed;
public static int RegisterHotKey(Keys key, KeyModifiers modifiers)
{
_windowReadyEvent.WaitOne();
int id = System.Threading.Interlocked.Increment(ref _id);
_wnd.Invoke(new RegisterHotKeyDelegate(RegisterHotKeyInternal), _hwnd, id, (uint)modifiers, (uint)key);
return id;
}
public static void UnregisterHotKey(int id)
{
_wnd.Invoke(new UnRegisterHotKeyDelegate(UnRegisterHotKeyInternal), _hwnd, id);
}
delegate void RegisterHotKeyDelegate(IntPtr hwnd, int id, uint modifiers, uint key);
delegate void UnRegisterHotKeyDelegate(IntPtr hwnd, int id);
private static void RegisterHotKeyInternal(IntPtr hwnd, int id, uint modifiers, uint key)
{
RegisterHotKey(hwnd, id, modifiers, key);
}
private static void UnRegisterHotKeyInternal(IntPtr hwnd, int id)
{
UnregisterHotKey(_hwnd, id);
}
private static void OnHotKeyPressed(HotKeyEventArgs e)
{
if (HotKeyManager.HotKeyPressed != null)
{
HotKeyManager.HotKeyPressed(null, e);
}
}
private static volatile MessageWindow _wnd;
private static volatile IntPtr _hwnd;
private static ManualResetEvent _windowReadyEvent = new ManualResetEvent(false);
static HotKeyManager()
{
Thread messageLoop = new Thread(delegate()
{
Application.Run(new MessageWindow());
});
messageLoop.Name = "MessageLoopThread";
messageLoop.IsBackground = true;
messageLoop.Start();
}
private class MessageWindow : Form
{
public MessageWindow()
{
_wnd = this;
_hwnd = this.Handle;
_windowReadyEvent.Set();
}
protected override void WndProc(ref Message m)
{
if (m.Msg == WM_HOTKEY)
{
HotKeyEventArgs e = new HotKeyEventArgs(m.LParam);
HotKeyManager.OnHotKeyPressed(e);
}
base.WndProc(ref m);
}
protected override void SetVisibleCore(bool value)
{
// Ensure the window never becomes visible
base.SetVisibleCore(false);
}
private const int WM_HOTKEY = 0x312;
}
[DllImport("user32", SetLastError=true)]
private static extern bool RegisterHotKey(IntPtr hWnd, int id, uint fsModifiers, uint vk);
[DllImport("user32", SetLastError = true)]
private static extern bool UnregisterHotKey(IntPtr hWnd, int id);
private static int _id = 0;
}
public class HotKeyEventArgs : EventArgs
{
public readonly Keys Key;
public readonly KeyModifiers Modifiers;
public HotKeyEventArgs(Keys key, KeyModifiers modifiers)
{
this.Key = key;
this.Modifiers = modifiers;
}
public HotKeyEventArgs(IntPtr hotKeyParam)
{
uint param = (uint)hotKeyParam.ToInt64();
Key = (Keys)((param & 0xffff0000) >> 16);
Modifiers = (KeyModifiers)(param & 0x0000ffff);
}
}
[Flags]
public enum KeyModifiers
{
Alt = 1,
Control = 2,
Shift = 4,
Windows = 8,
NoRepeat = 0x4000
}
}
Here is an example of using HotKeyManager from a Console application
using System;
using System.Windows.Forms;
namespace ConsoleHotKey
{
class Program
{
static void Main(string[] args)
{
HotKeyManager.RegisterHotKey(Keys.A, KeyModifiers.Alt);
HotKeyManager.HotKeyPressed += new EventHandler<HotKeyEventArgs>(HotKeyManager_HotKeyPressed);
Console.ReadLine();
}
static void HotKeyManager_HotKeyPressed(object sender, HotKeyEventArgs e)
{
Console.WriteLine("Hit me!");
}
}
}

I just wanted to offer an alternative solution.
I was answering a question for someone who was using this script and I figured this might help someone else who has trouble setting up a global key hook.
Edit: Don't forget to add a reference to System.Windows.Forms
You can do this by selecting Project🢂Add Reference and checking System.Windows.Forms
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Windows.Forms;
namespace ConsoleKeyhook
{
class Hooky
{
///////////////////////////////////////////////////////////
//A bunch of DLL Imports to set a low level keyboard hook
///////////////////////////////////////////////////////////
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr SetWindowsHookEx(int idHook,
LowLevelKeyboardProc lpfn, IntPtr hMod, uint dwThreadId);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
private static extern bool UnhookWindowsHookEx(IntPtr hhk);
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode,
IntPtr wParam, IntPtr lParam);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
private static extern IntPtr GetModuleHandle(string lpModuleName);
////////////////////////////////////////////////////////////////
//Some constants to make handling our hook code easier to read
////////////////////////////////////////////////////////////////
private const int WH_KEYBOARD_LL = 13; //Type of Hook - Low Level Keyboard
private const int WM_KEYDOWN = 0x0100; //Value passed on KeyDown
private const int WM_KEYUP = 0x0101; //Value passed on KeyUp
private static LowLevelKeyboardProc _proc = HookCallback; //The function called when a key is pressed
private static IntPtr _hookID = IntPtr.Zero;
private static bool CONTROL_DOWN = false; //Bool to use as a flag for control key
public static void Main()
{
_hookID = SetHook(_proc); //Set our hook
Application.Run(); //Start a standard application method loop
}
private static IntPtr SetHook(LowLevelKeyboardProc proc)
{
using (Process curProcess = Process.GetCurrentProcess())
using (ProcessModule curModule = curProcess.MainModule)
{
return SetWindowsHookEx(WH_KEYBOARD_LL, proc,
GetModuleHandle(curModule.ModuleName), 0);
}
}
private delegate IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam);
private static IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN) //A Key was pressed down
{
int vkCode = Marshal.ReadInt32(lParam); //Get the keycode
string theKey = ((Keys)vkCode).ToString(); //Name of the key
Console.Write(theKey); //Display the name of the key
if (theKey.Contains("ControlKey")) //If they pressed control
{
CONTROL_DOWN = true; //Flag control as down
}
else if (CONTROL_DOWN && theKey == "B") //If they held CTRL and pressed B
{
Console.WriteLine("\n***HOTKEY PRESSED***"); //Our hotkey was pressed
}
else if (theKey == "Escape") //If they press escape
{
UnhookWindowsHookEx(_hookID); //Release our hook
Environment.Exit(0); //Exit our program
}
}
else if (nCode >= 0 && wParam == (IntPtr)WM_KEYUP) //KeyUP
{
int vkCode = Marshal.ReadInt32(lParam); //Get Keycode
string theKey = ((Keys)vkCode).ToString(); //Get Key name
if (theKey.Contains("ControlKey")) //If they let go of control
{
CONTROL_DOWN = false; //Unflag control
}
}
return CallNextHookEx(_hookID, nCode, wParam, lParam); //Call the next hook
}
}
}

I came up with a solution based on Chris' answer that uses WPF instead of WinForms:
public sealed class GlobalHotkeyRegister : IGlobalHotkeyRegister, IDisposable
{
private const int WmHotkey = 0x0312;
private Application _app;
private readonly Dictionary<Hotkey, Action> _hotkeyActions;
public GlobalHotkeyRegister()
{
_hotkeyActions = new Dictionary<Hotkey, Action>();
var startupTcs = new TaskCompletionSource<object>();
Task.Run(() =>
{
ComponentDispatcher.ThreadPreprocessMessage += OnThreadPreProcessMessage;
_app = new Application();
_app.Startup += (s, e) => startupTcs.SetResult(null);
_app.Run();
});
startupTcs.Task.Wait();
}
public void Add(Hotkey hotkey, Action action)
{
_hotkeyActions.Add(hotkey, action);
var keyModifier = (int) hotkey.KeyModifier;
var key = KeyInterop.VirtualKeyFromKey(hotkey.Key);
_app.Dispatcher.Invoke(() =>
{
if (!RegisterHotKey(IntPtr.Zero, hotkey.GetHashCode(), keyModifier, key))
throw new Win32Exception(Marshal.GetLastWin32Error());
});
}
public void Remove(Hotkey hotkey)
{
_hotkeyActions.Remove(hotkey);
_app.Dispatcher.Invoke(() =>
{
if (!UnregisterHotKey(IntPtr.Zero, hotkey.GetHashCode()))
throw new Win32Exception(Marshal.GetLastWin32Error());
});
}
private void OnThreadPreProcessMessage(ref MSG msg, ref bool handled)
{
if (msg.message != WmHotkey)
return;
var key = KeyInterop.KeyFromVirtualKey(((int) msg.lParam >> 16) & 0xFFFF);
var keyModifier = (KeyModifier) ((int) msg.lParam & 0xFFFF);
var hotKey = new Hotkey(keyModifier, key);
_hotkeyActions[hotKey]();
}
public void Dispose()
{
_app.Dispatcher.InvokeShutdown();
}
[DllImport("user32.dll", SetLastError = true)]
private static extern bool RegisterHotKey(IntPtr hWnd, int id, int fsModifiers, int vlc);
[DllImport("user32.dll", SetLastError = true)]
private static extern bool UnregisterHotKey(IntPtr hWnd, int id);
}
public class Hotkey
{
public Hotkey(KeyModifier keyModifier, Key key)
{
KeyModifier = keyModifier;
Key = key;
}
public KeyModifier KeyModifier { get; }
public Key Key { get; }
#region ToString(), Equals() and GetHashcode() overrides
}
[Flags]
public enum KeyModifier
{
None = 0x0000,
Alt = 0x0001,
Ctrl = 0x0002,
Shift = 0x0004,
Win = 0x0008,
NoRepeat = 0x4000
}
To use this, you need to add references to PresentationFramework.dll and WindowsBase.dll.
public static void Main()
{
using (var hotkeyManager = new GlobalHotkeyManager())
{
var hotkey = new Hotkey(KeyModifier.Ctrl | KeyModifier.Alt, Key.S);
hotkeyManager.Add(hotkey, () => System.Console.WriteLine(hotkey));
System.Console.ReadKey();
}
}

Changed the HotKeyManager class
public static class HotKeyManager
{
public static event EventHandler<HotKeyEventArgs> HotKeyPressed;
public static int RegisterHotKey(Keys key, HotKeyEventArgs.KeyModifiers modifiers)
{
_windowReadyEvent.WaitOne();
_wnd.Invoke(new RegisterHotKeyDelegate(RegisterHotKeyInternal), _hwnd, Interlocked.Increment(ref _id), (uint)modifiers, (uint)key);
return Interlocked.Increment(ref _id);
}
public static void UnregisterHotKey(int id)
{
_wnd.Invoke(new UnRegisterHotKeyDelegate(UnRegisterHotKeyInternal), _hwnd, id);
}
private delegate void RegisterHotKeyDelegate(IntPtr hwnd, int id, uint modifiers, uint key);
private delegate void UnRegisterHotKeyDelegate(IntPtr hwnd, int id);
private static void RegisterHotKeyInternal(IntPtr hwnd, int id, uint modifiers, uint key)
{
RegisterHotKey(hWnd: hwnd, id: id, fsModifiers: modifiers, vk: key);
}
private static void UnRegisterHotKeyInternal(IntPtr hwnd, int id)
{
UnregisterHotKey(_hwnd, id);
}
private static void OnHotKeyPressed(HotKeyEventArgs e)
{
HotKeyPressed?.Invoke(null, e);
}
private static volatile MessageWindow _wnd;
private static volatile IntPtr _hwnd;
private static ManualResetEvent _windowReadyEvent = new ManualResetEvent(false);
static HotKeyManager()
{
new Thread(delegate ()
{
Application.Run(new MessageWindow());
})
{
Name = "MessageLoopThread",
IsBackground = true
}.Start();
}
private class MessageWindow : Form
{
public MessageWindow()
{
_wnd = this;
_hwnd = Handle;
_windowReadyEvent.Set();
}
protected override void WndProc(ref Message m)
{
if (m.Msg == WM_HOTKEY)
{
var e = new HotKeyEventArgs(hotKeyParam: m.LParam);
OnHotKeyPressed(e);
}
base.WndProc(m: ref m);
}
protected override void SetVisibleCore(bool value)
{
// Ensure the window never becomes visible
base.SetVisibleCore(false);
}
private const int WM_HOTKEY = 0x312;
}
[DllImport("user32", SetLastError = true)]
private static extern bool RegisterHotKey(IntPtr hWnd, int id, uint fsModifiers, uint vk);
[DllImport("user32", SetLastError = true)]
private static extern bool UnregisterHotKey(IntPtr hWnd, int id);
private static int _id = 0;
}
Class HotKeyEventArgs:
public partial class HotKeyEventArgs : EventArgs
{
public readonly Keys Key;
public readonly KeyModifiers Modifiers;
public HotKeyEventArgs(Keys key, KeyModifiers modifiers)
{
Key = key;
Modifiers = modifiers;
}
public HotKeyEventArgs(IntPtr hotKeyParam)
{
Key = (Keys)(((uint)hotKeyParam.ToInt64() & 0xffff0000) >> 16);
Modifiers = (KeyModifiers)((uint)hotKeyParam.ToInt64() & 0x0000ffff);
}
}
And class: HotKeyEventArgs
public partial class HotKeyEventArgs
{
[Flags]
public enum KeyModifiers
{
Alt = 1,
Control = 2,
Shift = 4,
Windows = 8,
NoRepeat = 0x4000
}
}