Is a given point visible?

[skiflyer]

My application opens a child window.

I always want this application to open just to the right of my main window, unless that puts it off screen, in which case I'll go left unless that puts it off screen in which case I'll change the whole thing to default position.

So I have the start

_childForm = new childForm();

Point childstart = new Point(this.Location.X + this.Width + 2, this.Location.Y);

Point rightTop = new Point(childstart.X + _childForm.Width, childstart.Y);

_childForm.Location = childstart;
_childForm.Show();

But how do I go about verifying that rightTop is visible, or childstart is visible, or neither are visible so I can apply the proper logic?

Thanks.

 

[skiflyer]

Well, after digging a little I'm sure there are a dozen approaches... what I decided to do is a bit convoluted and may well get refactored... but here it is for the curious

Define the topright point as above
use Screen.GetScreen on that point
Compare screen.WorkingArea.Right to the topright
If passed done, if not define a new childstart
useScreen.GetScreen on the new start point
Compare screen.WorkingArea.X to the new start point
If passed done, if not change childForm.StartPosition to default

Hope that might help someone else someday