Detect both left and right mouse click at the same time?

Question

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

Answer 1

Kind of an old question, but I came across this (coincidentally also while doing a Minesweeper clone) and felt it was missing something. If you want to have the two-button click but still catch regular single-button clicks as well, you can do the following:

private bool left_down;
private bool right_down;
private bool both_click;

private void Form1_MouseDown(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Left)
    {
        left_down = true;
        if (right_down)
            both_click = true;
    }
    if (e.Button == MouseButtons.Right)
    {
        right_down = true;
        if (left_down)
            both_click = true;
    }
}
private void Form1_MouseUp(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Left)
    {
        if (!right_down)
        {
            if (both_click)
                //Do both-click stuff here
            else
                //Do left-click stuff here
            both_click = false;
        }
        left_down = false;
    }
    if (e.Button == MouseButtons.Right)
    {
        if (!left_down)
        {
            if (both_click)
                //Do both-click stuff here
            else
                //Do right-click stuff here
            both_click = false;
        }
        right_down = false;
    }
}

It moves the detection to the mouse-up rather than the mouse-down. It doesn't do anything until you release both buttons. This works almost exactly like the Windows 7 version of Minesweeper, except that the right button alone in the original operates on mouse-down. (I honestly prefer my version). There's a bit of redundancy in that the both-click case is called in two places depending on whether you release the left or right button first, but this should probably be a single-line function-call anyhow. Bonus: You can check the both_click flag from elsewhere in order to draw the hint-square around your cursor showing which squares will be revealed when you release the buttons.