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.NET Forum / .NET Framework / New Users / August 2005

rectangle contains

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Rob T - 29 Aug 2005 21:05 GMT
Hi.

I have a program that creates an image and displays it to the
screen....pretty simple.  I put it into a matrix so that I can rotate it.  I
would also like to be able to know when I click on it so I am doing a
rectangle.contains.  This works fine if the image isn't rotated.  But if it
is, how can I get the rectangle.contains to rotate also?  Thanks.

     Dim im As Bitmap
     im = bar.BuildMyImage
     Dim mx As New Matrix
     mx.Translate(StartPos.X, StartPos.Y)
     mx.Rotate(Rotation)
     G.Transform = mx
     G.DrawImage(im, 0, 0, im.Width ,im.Height)
     G.ResetTransform()

In my mouse onclick event:

     Return New Rectangle(New Point(X1, Y1), New Size(im.width,
im.height)).Contains(p)
Bob Powell [MVP] - 29 Aug 2005 22:21 GMT
Check out my article on backtracking the mouse in Windows Forms Tips and
Tricks.

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Bob Powell [MVP]
Visual C#, System.Drawing

Ramuseco Limited .NET consulting
http://www.ramuseco.com

Find great Windows Forms articles in Windows Forms Tips and Tricks
http://www.bobpowell.net/tipstricks.htm

Answer those GDI+ questions with the GDI+ FAQ
http://www.bobpowell.net/faqmain.htm

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> Hi.
>
[quoted text clipped - 17 lines]
>      Return New Rectangle(New Point(X1, Y1), New Size(im.width,
> im.height)).Contains(p)

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