Simulate mouse whell

[aspmaker]

Hello, can we simulate the mouse whell scroll? Thank you.

in java.awt.Robot
mouseWheel

public void mouseWheel(int wheelAmt)
Rotates the scroll wheel on wheel-equipped mice.

Parameters:
wheelAmt - number of "notches" to move the mouse wheel Negative values indicate movement up/away from the user, positive values indicate movement down/towards the user.
Since:
1.4

[ovpoddar]

I think for windows we can use SendInput method from user32.dll.
here is the nursery code

[DllImport("user32.dll", SetLastError = true)]
private static extern uint SendInput(uint inputCount, Input[] input, int size);

public void MouseScrollUpDown(int moveTo)
{
        var input = new Input
        {
	        Type = InputType.Mouse,
	        MouseInputWithUnion = new MouseInput(moveTo, MouseState.MouseWheelUpDown)
        };
        if (SendInput(1, new Input[] { input }, Marshal.SizeOf(input)) == 0)
	        throw new Exception();
}

public void MouseScrollLeftRight(int moveTo)
{
        var input = new Input
        {
	        Type = InputType.Mouse,
	        MouseInputWithUnion = new MouseInput(moveTo, MouseState.MouseWheelLeftRight)
        };
        if (SendInput(1, new Input[] { input }, Marshal.SizeOf(input)) == 0)
	        throw new Exception();
}

we can also make mouse scroll. in linux we can use button 4 and button 5
4 for scroll up
5 for scroll down
but i don't know about mac.