Scaling Picturebox does not change image at all

Question

I\'m using a picturebox to create a visual of an instance of my truss class. I\'m creating the visual by drawing directly onto the picture box in the paint event. The method loo

Answer 1

Call ScaleTransform before you do your drawing. You can calculate the desired scale factor like this:

// place this code after the calculation of maxWidth and maxHeight
// but before the drawing code
PictureBox p = (PictureBox)sender;
float scaleFactor = Math.Min(
    ((float)p.Width) / maxWidth,
    ((float)p.Height) / maxHeight
);

g.ScaleTransform(scaleFactor, scaleFactor);