C # switch between the left and right mouse keys without modifying them on the control panel

I always like to use the mouse with the left hand, But sometimes my colleagues will temporarily perform operations and have to make changes in the control panel. this is inconvenient. Why not write a console program and double-click it to switch between the left and right keys?
The code is simple: Copy codeThe Code is as follows: class Program
{
[DllImport ("user32.dll")]
Private extern static bool SwapMouseButton (bool fSwap );
// Blog address: http://blog.csdn.net/bluceyoung

[DllImport ("user32.dll")]
Private extern static int GetSystemMetrics (int index );

Static void Main (string [] args)
{
Int flag = GetSystemMetrics (23); // get the current mouse setting status
If (flag = 0) // right hand habits
{
SwapMouseButton (true); // set it to the left hand
}
Else // left hand habits
{
SwapMouseButton (false); // set it to the right hand
}
}
}