problem on page 465

chiefarchon · September 25th, 2009, 03:17 AM

Hi

On page 465 and on other pages I keep seeing the ~ (tild) sign and never an explanation for why it is used!

on page 465 there is the following

Code:

newFont = new Font(oldFont, oldFont.Style & ~FontStyle.Bold);

This is repeated a number of times with absolutely no explanation as to why its there.

Is there somebody who could explain please.

Thanks in advance for any help that you can give to me.

msherburne84 · January 17th, 2010, 08:46 PM

The ~(tild) is what is used to define a Destructor. Destructors are handled by the .NET garbage collector and are normally left alone. What I gather from this is if you look at the if,else statement on this particular page, it is checking if the FontStyle is set to Bold and if it is set to Bold it will remove that property else add the bold property. If anyone else has a better explanation I would like to know, because that is what I'm getting from this particular piece of code.