Rotate and Resize a Rectangle

[C# Programming]

Guys,

I need your help here. Appreciate any advice as I am not familiar with matrix. Everyone is asking me to use matrix.

I have a rectangle that are draw using the on_paint function.

The users can rotate or resize the rectangle.

Currently I am using the m_graphics.RotateTransform(node.Angle);

If the user DOES NOT rotate and just resize, everything is good. Just like MS Office.

But once it is resize, everything when haywire. I am not able to use the mouse coordinate to track the height and width of the rectangle.

Anyone can help?

Thanks
Daniel