public static void SimulateKeyPress(VirtualKeyCode keyCode)
{
var down = new Input();
down.Type = (UInt32)InputType.KEYBOARD;
down.Data.Keyboard = new KeybdInput
{
Vk = (UInt16) keyCode,
Scan = 0,
Flags = 0,
Time = 0,
ExtraInfo = IntPtr.Zero
};
var up = new Input();
up.Type = (UInt32)InputType.KEYBOARD;
up.Data.Keyboard = new KeybdInput
{
Vk = (UInt16) keyCode,
Scan = 0,
Flags = (UInt32) KeyboardFlag.KEYUP,
Time = 0,
ExtraInfo = IntPtr.Zero
};
var inputList = new Input[2];
inputList[0] = down;
inputList[1] = up;
var numberOfSuccessfulSimulatedInputs = User32.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));
}
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 = Encoding.ASCII.GetBytes(text);
var len = chars.Length;
var inputList = new Input[len * 2];
for (var x = 0; x < len; x++)
{
UInt16 scanCode = chars[x];
var down = new Input();
down.Type = (UInt32)InputType.KEYBOARD;
down.Data.Keyboard = new KeybdInput
{
Vk = 0,
Scan = scanCode,
Flags = (UInt32) KeyboardFlag.UNICODE,
Time = 0,
ExtraInfo = IntPtr.Zero
};
var up = new Input();
up.Type = (UInt32)InputType.KEYBOARD;
up.Data.Keyboard = new KeybdInput
{
Vk = 0,
Scan = scanCode,
Flags = (UInt32) (KeyboardFlag.KEYUP | KeyboardFlag.UNICODE),
Time = 0,
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 MouseEventFlags 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;
}
User32.SendInput((UInt32)len * 2, inputList, Marshal.SizeOf(typeof(Input)));
}
public static extern UInt32 SendInput(UInt32 numberOfInputs, Input[] inputs, Int32 sizeOfInputStructure);