waiting on a point

I'm writing a program with a graph. You have to select segments of the
graph, which requires 2 points.

is there a way to write this with a while loop, where

while(morepoints == "yes")
{
    while(waiting on point 1)
    {
        check if point 1 is a good point
        if point 1 is good
            break from while
    }
    while(waiting on point 2)
    {
        check if point 2 is a good point
        if point 2 is good
            break from while
    }
    ask user if they want more points
    if yes break from while
}

working with widgets is new to me and im used to working with while loops
and what not. I've been just checking to see if i have 0 or 1 points in
the on_point wxmpl code, and then if i have 1 and the next point is good
opening a dialog to ask and then resetting number of pionts to 0.

anyone have any better ideas of how to do this? the amount of
"global"/"self.points" variables is driving me nuts