/// <summary>
/// Effectively sends the keyboard input command.
/// </summary>
/// <param name="keyCode">The key code to send. Can be the scan code or the virtual key code.</param>
/// <param name="isKeyDown">Flag if the key should be pressed or released.</param>
/// <param name="isScanCode">Flag if the code is the scan code or the virtual key code.</param>
/// <param name="isExtended">Flag if the key is an extended key.</param>
/// <param name="isUnicode">Flag if the key is unicode.</param>
private static void SendInput(ushort keyCode, bool isKeyDown, bool isScanCode, bool isExtended, bool isUnicode)
{
// Prepare the basic object
var keyboardInput = new KEYBDINPUT
{
time = 0,
dwExtraInfo = User32.GetMessageExtraInfo(),
};
// Add the "key-up" flag if needed. By default it is "key-down"
if (!isKeyDown)
{
keyboardInput.dwFlags |= KeyEventFlags.KEYEVENTF_KEYUP;
}
if (isScanCode)
{
keyboardInput.wScan = keyCode;
keyboardInput.dwFlags |= KeyEventFlags.KEYEVENTF_SCANCODE;
// Add the extended flag if the flag is set or the keycode is prefixed with the byte 0xE0
// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms646267(v=vs.85).aspx
if (isExtended || (keyCode & 0xFF00) == 0xE0)
{
keyboardInput.dwFlags |= KeyEventFlags.KEYEVENTF_EXTENDEDKEY;
}
}
else if (isUnicode)
{
keyboardInput.dwFlags |= KeyEventFlags.KEYEVENTF_UNICODE;
keyboardInput.wScan = keyCode;
}
else
{
keyboardInput.wVk = keyCode;
}
// Build the input object
var input = INPUT.KeyboardInput(keyboardInput);
// Send the command
if (User32.SendInput(1, new[] { input }, INPUT.Size) == 0)
{
// An error occured
var errorCode = Marshal.GetLastWin32Error();
Logger.Default.Warn("Could not send keyboard input. ErrorCode: {0}", errorCode);
}
if (WindowsVersion.IsWindows10())
{
Wait.For(TimeSpan.FromMilliseconds(10));
}
}
public static void SendInput(KEYBDINPUT keyboardInput)
{
// Demand the correct permissions
var permissions = new PermissionSet(PermissionState.Unrestricted);
permissions.Demand();
if (User32.SendInput(1, new[] { INPUT.KeyboardInput(keyboardInput) }, INPUT.Size) == 0)
{
throw new Win32Exception();
}
}
/// <summary>
/// Synthesizes keystrokes, mouse motions, and button clicks.
/// </summary>
/// <param name="keyCode">Key code</param>
/// <param name="isKeyDown">Whether the button is pressed</param>
public static void SendInput(ushort keyCode, bool isKeyDown)
{
KEYBDINPUT keyboardInput = new KEYBDINPUT
{
time = 0,
dwExtraInfo = User32.GetMessageExtraInfo()
};
if (isKeyDown == false)
{
keyboardInput.dwFlags |= KeyEventFlags.KEYEVENTF_KEYUP;
}
keyboardInput.wVk = keyCode;
var input = INPUT.KeyboardInput(keyboardInput);
User32.SendInput(1, new[] { input }, INPUT.Size);
}
