修改系统鼠标左右按键快速切换

[DllImport("user32.dll")]
private extern static bool SwapMouseButton(bool fSwap);

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

[DllImport("user32.dll")]
private static extern IntPtr LoadCursorFromFile(string fileName);

[DllImport("user32.dll")]
public static extern int SetSystemCursor(int hcur, int id);

public const int OCR_NORMAL = 32512; //表示正常状态下的鼠标

//切换鼠标左右手
private void button1_Click(object sender, RoutedEventArgs e)
{
int flag = GetSystemMetrics(23);//获取当前鼠标设置状态
if (flag == 0)//右手习惯
{
SwapMouseButton(true);//设置成左手
IntPtr MyCur = LoadCursorFromFile("C:\\Windows\\Cursors\\lefty_pointer1.cur");
SetSystemCursor((int)MyCur, OCR_NORMAL);
}
else//左手习惯
{
SwapMouseButton(false);//设置成右手
IntPtr MyCur = LoadCursorFromFile("C:\\Windows\\Cursors\\aero_arrow.cur");
SetSystemCursor((int)MyCur, OCR_NORMAL);
}
}