I\'m remaking windows Minesweeper (from XP) and something they had included was that if you click a number with as many flags as it\'s number with the left and right mouse b
Another option is to use the static MouseButtons on the System.Windows.Forms.Control class
This will tell you which mouse buttons are currently pressed so that you can do something like the following:
((Control.MouseButtons & MouseButtons.Right) == MouseButtons.Right) &&
((Control.MouseButtons & MouseButtons.Left) == MouseButtons.Left)
You can also check out the MSDN example