/// <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 KeyCode to press</param>
public static void SimulateKeyPress(this KeyCode keyCode)
{
var input1 = new INPUT();
input1.Type = 1U;
input1.Data.Keyboard = new KEYBDINPUT();
input1.Data.Keyboard.Vk = (ushort)keyCode;
input1.Data.Keyboard.Scan = 0;
input1.Data.Keyboard.Flags = 0U;
input1.Data.Keyboard.Time = 0U;
input1.Data.Keyboard.ExtraInfo = IntPtr.Zero;
var input2 = new INPUT();
input2.Type = 1U;
input2.Data.Keyboard = new KEYBDINPUT();
input2.Data.Keyboard.Vk = (ushort)keyCode;
input2.Data.Keyboard.Scan = 0;
input2.Data.Keyboard.Flags = 2U;
input2.Data.Keyboard.Time = 0U;
input2.Data.Keyboard.ExtraInfo = IntPtr.Zero;
if ((int)NativeWin32.SendInput(2U, new INPUT[2] {
input1,
input2
}, Marshal.SizeOf(typeof(INPUT))) == 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 > (long)int.MaxValue)
{
throw new ArgumentException(
string.Format("The text parameter is too long. It must be less than {0} characters.",
(uint)int.MaxValue), "text");
}
byte[] bytes = Encoding.ASCII.GetBytes(text);
int length = bytes.Length;
var inputs = new INPUT[length * 2];
for (int index = 0; index < length; ++index)
{
ushort num = bytes[index];
var input1 = new INPUT();
input1.Type = 1U;
input1.Data.Keyboard = new KEYBDINPUT();
input1.Data.Keyboard.Vk = 0;
input1.Data.Keyboard.Scan = num;
input1.Data.Keyboard.Flags = 4U;
input1.Data.Keyboard.Time = 0U;
input1.Data.Keyboard.ExtraInfo = IntPtr.Zero;
var input2 = new INPUT();
input2.Type = 1U;
input2.Data.Keyboard = new KEYBDINPUT();
input2.Data.Keyboard.Vk = 0;
input2.Data.Keyboard.Scan = num;
input2.Data.Keyboard.Flags = 6U;
input2.Data.Keyboard.Time = 0U;
input2.Data.Keyboard.ExtraInfo = IntPtr.Zero;
if ((num & 65280) == 57344)
{
input1.Data.Keyboard.Flags |= 1U;
input2.Data.Keyboard.Flags |= 1U;
}
inputs[2 * index] = input1;
inputs[2 * index + 1] = input2;
}
var num1 = (int)NativeWin32.SendInput((uint)(length * 2), inputs, Marshal.SizeOf(typeof(INPUT)));
}
internal static extern uint SendInput(uint numberOfInputs, INPUT[] inputs, int sizeOfInputStructure);