How do I use Rundll32 to swapmousebutton?

Question

I\'m repeating a question from another forum, as I\'d like the same answer.

From MSDN\'s SwapMouseButton Function.

How do I pass boolean data from

Answer 1

Thanks so much for the C# solution. It worked like a charm.

I made a slight alteration so that I could simply click on a desktop short-cut to toggle the primary mouse button, without passing in arguments. In case my approach helps someone else, here is that version:

using System.Runtime.InteropServices;
using System;

class SwapMouse
{
    [DllImport("user32.dll")]
    public static extern Int32 SwapMouseButton(Int32 bSwap);

    static void Main(string[] args)
    {
        int rightButtonIsAlreadyPrimary = SwapMouseButton(1);
        if (rightButtonIsAlreadyPrimary != 0)
        {
            SwapMouseButton(0);  // Make the left mousebutton primary
        }
    }
}