static extern UInt32 SendInput(UInt32 numberOfInputs, INPUT[] inputs, Int32 sizeOfInputStructure);
/// <summary>
/// Calls the Win32 SendInput method with a stream of KeyDown and KeyUp messages in order to simulate uninterrupted text entry via the keyboard.
/// </summary>
/// <param name="text">The text to be simulated.</param>
public static void SimulateTextEntry(string text)
{
if (text.Length > UInt32.MaxValue / 2) throw new ArgumentException(string.Format("The text parameter is too long. It must be less than {0} characters.", UInt32.MaxValue / 2), "text");
var chars = text.ToCharArray(); // UTF8Encoding.ASCII.GetBytes(text);
var len = chars.Length;
INPUT[] inputList = new INPUT[len * 2];
for (int x = 0; x < len; x++)
{
UInt16 scanCode = chars[x];
var down = new INPUT();
var up = new INPUT();
if (scanCode < 32)
{
// map the scan code to a Vk so we can deal with special control chars, e.g. Tab and Enter
ushort vk = (ushort)VkKeyScan((char)chars[x]);
ushort state = (ushort)((vk & (ushort)0xff00) >> 8);
vk = (ushort)(vk & (ushort)0xff);
down.Type = (UInt32)InputType.KEYBOARD;
down.Data.Keyboard = new KEYBDINPUT();
down.Data.Keyboard.Vk = vk;
down.Data.Keyboard.Scan = 0;
down.Data.Keyboard.Flags = (UInt32)0;
down.Data.Keyboard.Time = 0;
down.Data.Keyboard.ExtraInfo = IntPtr.Zero;
up.Type = (UInt32)InputType.KEYBOARD;
up.Data.Keyboard = new KEYBDINPUT();
up.Data.Keyboard.Vk = vk;
up.Data.Keyboard.Scan = 0;
up.Data.Keyboard.Flags = (UInt32)(KeyboardFlag.KEYUP);
up.Data.Keyboard.Time = 0;
up.Data.Keyboard.ExtraInfo = IntPtr.Zero;
}
else
{
down.Type = (UInt32)InputType.KEYBOARD;
down.Data.Keyboard = new KEYBDINPUT();
down.Data.Keyboard.Vk = 0;
down.Data.Keyboard.Scan = scanCode;
down.Data.Keyboard.Flags = (UInt32)KeyboardFlag.UNICODE;
down.Data.Keyboard.Time = 0;
down.Data.Keyboard.ExtraInfo = IntPtr.Zero;
up.Type = (UInt32)InputType.KEYBOARD;
up.Data.Keyboard = new KEYBDINPUT();
up.Data.Keyboard.Vk = 0;
up.Data.Keyboard.Scan = scanCode;
up.Data.Keyboard.Flags = (UInt32)(KeyboardFlag.KEYUP | KeyboardFlag.UNICODE);
up.Data.Keyboard.Time = 0;
up.Data.Keyboard.ExtraInfo = IntPtr.Zero;
}
// Handle extended keys:
// If the scan code is preceded by a prefix byte that has the value 0xE0 (224),
// we need to include the KEYEVENTF_EXTENDEDKEY flag in the Flags property.
if ((scanCode & 0xFF00) == 0xE000)
{
down.Data.Keyboard.Flags |= (UInt32)KeyboardFlag.EXTENDEDKEY;
up.Data.Keyboard.Flags |= (UInt32)KeyboardFlag.EXTENDEDKEY;
}
inputList[2 * x] = down;
inputList[2 * x + 1] = up;
}
var numberOfSuccessfulSimulatedInputs = SendInput((UInt32)len * 2, inputList, Marshal.SizeOf(typeof(INPUT)));
}
/// <summary>
/// Calls the Win32 SendInput method with a KeyDown and KeyUp message in the same input sequence in order to simulate a Key PRESS.
/// </summary>
/// <param name="keyCode">The VirtualKeyCode to press</param>
public static void SimulateKeyPress(VirtualKeyCode keyCode)
{
var down = new INPUT();
down.Type = (UInt32)InputType.KEYBOARD;
down.Data.Keyboard = new KEYBDINPUT();
down.Data.Keyboard.Vk = (UInt16)keyCode;
down.Data.Keyboard.Scan = 0;
down.Data.Keyboard.Flags = 0;
down.Data.Keyboard.Time = 0;
down.Data.Keyboard.ExtraInfo = IntPtr.Zero;
var up = new INPUT();
up.Type = (UInt32)InputType.KEYBOARD;
up.Data.Keyboard = new KEYBDINPUT();
up.Data.Keyboard.Vk = (UInt16)keyCode;
up.Data.Keyboard.Scan = 0;
up.Data.Keyboard.Flags = (UInt32)KeyboardFlag.KEYUP;
up.Data.Keyboard.Time = 0;
up.Data.Keyboard.ExtraInfo = IntPtr.Zero;
INPUT[] inputList = new INPUT[2];
inputList[0] = down;
inputList[1] = up;
var numberOfSuccessfulSimulatedInputs = SendInput(2, inputList, Marshal.SizeOf(typeof(INPUT)));
if (numberOfSuccessfulSimulatedInputs == 0) throw new Exception(string.Format("The key press simulation for {0} was not successful.", keyCode));
}
/// <summary>
/// Calls the Win32 SendInput method with a stream of KeyDown and KeyUp messages in order to simulate uninterrupted text entry via the keyboard.
/// </summary>
/// <param name="text">The text to be simulated.</param>
public static void SimulateTextEntry(string text)
{
if (text.Length > UInt32.MaxValue / 2) throw new ArgumentException(string.Format("The text parameter is too long. It must be less than {0} characters.", UInt32.MaxValue / 2), "text");
var chars = UTF8Encoding.ASCII.GetBytes(text);
var len = chars.Length;
INPUT[] inputList = new INPUT[len * 2];
for (int x = 0; x < len; x++)
{
UInt16 scanCode = chars[x];
var down = new INPUT();
down.Type = (UInt32)InputType.KEYBOARD;
down.Data.Keyboard = new KEYBDINPUT();
down.Data.Keyboard.VirtualKey = 0;
down.Data.Keyboard.Scan = scanCode;
down.Data.Keyboard.Flags = (UInt32)KeyboardFlag.UNICODE;
down.Data.Keyboard.Time = 0;
down.Data.Keyboard.ExtraInfo = IntPtr.Zero;
var up = new INPUT();
up.Type = (UInt32)InputType.KEYBOARD;
up.Data.Keyboard = new KEYBDINPUT();
up.Data.Keyboard.VirtualKey = 0;
up.Data.Keyboard.Scan = scanCode;
up.Data.Keyboard.Flags = (UInt32)(KeyboardFlag.KEYUP | KeyboardFlag.UNICODE);
up.Data.Keyboard.Time = 0;
up.Data.Keyboard.ExtraInfo = IntPtr.Zero;
// Handle extended keys:
// If the scan code is preceded by a prefix byte that has the value 0xE0 (224),
// we need to include the KEYEVENTF_EXTENDEDKEY flag in the Flags property.
if ((scanCode & 0xFF00) == 0xE000)
{
down.Data.Keyboard.Flags |= (UInt32)KeyboardFlag.EXTENDEDKEY;
up.Data.Keyboard.Flags |= (UInt32)KeyboardFlag.EXTENDEDKEY;
}
inputList[2*x] = down;
inputList[2*x + 1] = up;
}
var numberOfSuccessfulSimulatedInputs = SendInput((UInt32)len*2, inputList, Marshal.SizeOf(typeof(INPUT)));
}
/// <summary>
/// Calls the Win32 SendInput method to simulate a Key DOWN.
/// </summary>
/// <param name="keyCode">The VirtualKeyCode to press</param>
public static void SimulateKeyDown(VirtualKeyCode keyCode)
{
var down = new INPUT();
down.Type = (UInt32)InputType.KEYBOARD;
down.Data.Keyboard = new KEYBDINPUT();
down.Data.Keyboard.Vk = (UInt16)keyCode;
//down.Data.Keyboard.Scan = 0;
down.Data.Keyboard.Scan = (ushort)MapVirtualKey((UInt16)keyCode, 0);
down.Data.Keyboard.Flags = 0;
down.Data.Keyboard.Time = 0;
down.Data.Keyboard.ExtraInfo = IntPtr.Zero;
INPUT[] inputList = new INPUT[1];
inputList[0] = down;
var numberOfSuccessfulSimulatedInputs = SendInput(1, inputList, Marshal.SizeOf(typeof(INPUT)));
if (numberOfSuccessfulSimulatedInputs == 0) throw new Exception(string.Format("The key down simulation for {0} was not successful.", keyCode));
}
/// <summary>
/// Calls the Win32 SendInput method with a stream of KeyDown and KeyUp messages in order to simulate uninterrupted
/// text entry via the keyboard.
/// </summary>
/// <param name="text">The text to be simulated.</param>
public static void SimulateTextEntry(string text)
{
if (text.Length > uint.MaxValue / 2)
{
throw new ArgumentException(
string.Format("The text parameter is too long. It must be less than {0} characters.",
uint.MaxValue / 2), "text");
}
var chars = text.ToCharArray(); // UTF8Encoding.ASCII.GetBytes(text);
var len = chars.Length;
var inputList = new INPUT[len * 2];
for (var x = 0; x < len; x++)
{
ushort scanCode = chars[x];
var down = new INPUT();
var up = new INPUT();
if (scanCode < 32)
{
// map the scan code to a Vk so we can deal with special control chars, e.g. Tab and Enter
var vk = (ushort)VkKeyScan(chars[x]);
var state = (ushort)((vk & 0xff00) >> 8);
vk = (ushort)(vk & 0xff);
down.Type = (uint)InputType.KEYBOARD;
down.Data.Keyboard = new KEYBDINPUT();
down.Data.Keyboard.Vk = vk;
down.Data.Keyboard.Scan = 0;
down.Data.Keyboard.Flags = 0;
down.Data.Keyboard.Time = 0;
down.Data.Keyboard.ExtraInfo = IntPtr.Zero;
up.Type = (uint)InputType.KEYBOARD;
up.Data.Keyboard = new KEYBDINPUT();
up.Data.Keyboard.Vk = vk;
up.Data.Keyboard.Scan = 0;
up.Data.Keyboard.Flags = (uint)KeyboardFlag.KEYUP;
up.Data.Keyboard.Time = 0;
up.Data.Keyboard.ExtraInfo = IntPtr.Zero;
}
else
{
down.Type = (uint)InputType.KEYBOARD;
down.Data.Keyboard = new KEYBDINPUT();
down.Data.Keyboard.Vk = 0;
down.Data.Keyboard.Scan = scanCode;
down.Data.Keyboard.Flags = (uint)KeyboardFlag.UNICODE;
down.Data.Keyboard.Time = 0;
down.Data.Keyboard.ExtraInfo = IntPtr.Zero;
up.Type = (uint)InputType.KEYBOARD;
up.Data.Keyboard = new KEYBDINPUT();
up.Data.Keyboard.Vk = 0;
up.Data.Keyboard.Scan = scanCode;
up.Data.Keyboard.Flags = (uint)(KeyboardFlag.KEYUP | KeyboardFlag.UNICODE);
up.Data.Keyboard.Time = 0;
up.Data.Keyboard.ExtraInfo = IntPtr.Zero;
}
// Handle extended keys:
// If the scan code is preceded by a prefix byte that has the value 0xE0 (224),
// we need to include the KEYEVENTF_EXTENDEDKEY flag in the Flags property.
if ((scanCode & 0xFF00) == 0xE000)
{
down.Data.Keyboard.Flags |= (uint)KeyboardFlag.EXTENDEDKEY;
up.Data.Keyboard.Flags |= (uint)KeyboardFlag.EXTENDEDKEY;
}
inputList[2 * x] = down;
inputList[2 * x + 1] = up;
}
var numberOfSuccessfulSimulatedInputs = SendInput((uint)len * 2, inputList, Marshal.SizeOf(typeof(INPUT)));
}
