public static void SendMouseInput(int positionX, int positionY, int maxX, int maxY, bool leftDown)
{
if (positionX > int.MaxValue)
throw new ArgumentOutOfRangeException("positionX");
if (positionY > int.MaxValue)
throw new ArgumentOutOfRangeException("positionY");
Input[] i = new Input[2];
// move the mouse to the position specified
i[0] = new Input();
i[0].Type = InputMouse;
i[0].MouseInput.X = (positionX * 65535) / maxX;
i[0].MouseInput.Y = (positionY * 65535) / maxY;
i[0].MouseInput.Flags = MouseEventAbsolute | MouseEventMove;
// determine if we need to send a mouse down or mouse up event
if (!lastLeftDown && leftDown)
{
i[1] = new Input();
i[1].Type = InputMouse;
i[1].MouseInput.Flags = MouseEventLeftDown;
}
else if (lastLeftDown && !leftDown)
{
i[1] = new Input();
i[1].Type = InputMouse;
i[1].MouseInput.Flags = MouseEventLeftUp;
}
lastLeftDown = leftDown;
// send it off
uint result = SendInput(2, i, Marshal.SizeOf(i[0]));
if (result == 0)
throw new Win32Exception(Marshal.GetLastWin32Error());
}
public static void scroll(WheelPosition pos, int amount)
{
Input i = new Input();
i.Type = InputMouse;
if (pos == WheelPosition.HORIZONTAL)
{
i.MouseInput.Flags = MOUSEEVENTF_HWHEEL;
}
else if (pos == WheelPosition.VERTICAL)
{
i.MouseInput.Flags = MOUSEEVENTF_WHEEL;
}
i.MouseInput.MouseData = amount * WHEEL_DELTA - 1;
Input[] ia = new Input[1];
ia[0] = i;
// send it off
uint result = SendInput(1, ia, Marshal.SizeOf(i));
if (result == 0)
throw new Win32Exception(Marshal.GetLastWin32Error());
}
private static extern uint SendInput(uint numInputs, Input[] inputs, int size);
public static void release(MouseButton selected)
{
Input i = new Input();
i.Type = InputMouse;
if (selected == MouseButton.LEFT)
{
i.MouseInput.Flags = MouseEventLeftUp;
}
else if (selected == MouseButton.RIGHT)
{
i.MouseInput.Flags = MouseEventRightUp;
}
else if (selected == MouseButton.MIDDLE)
{
i.MouseInput.Flags = MOUSEEVENTF_MIDDLEUP;
}
else if (selected == MouseButton.X1)
{
i.MouseInput.MouseData = XBUTTON1;
i.MouseInput.Flags = MOUSEEVENTF_XUP;
}
else if (selected == MouseButton.X2)
{
i.MouseInput.MouseData = XBUTTON2;
i.MouseInput.Flags = MOUSEEVENTF_XUP;
}
Input[] ia = new Input[1];
ia[0] = i;
// send it off
uint result = SendInput(1, ia, Marshal.SizeOf(i));
if (result == 0)
throw new Win32Exception(Marshal.GetLastWin32Error());
}
