[help]how to dealing with checkbox in Xcode

hello everyone,

i search in deferent book about how to dealing with the checkbox but i don`t understood it

so can anyone help me.. and tell me how to dealing with it..?
how to know if it true or false..?

and please if you have a good website tutorial send the link to me or write it here..

Well, the checkbox in Interface Builder is really just a type of NSButton, and in Xcode's documentation, it tells us a button can have either two or three states, On (true), Off (false) and sometimes Mixed.

Now, how do we find out what state the button is in? First, create an connection between your code and your NIB with this.

Then, in your code, you can use a simple if statement to fine out what state the button is in, like so.


You can see a very simple example in the attached project. Open the Console and when you press Update, you'll see if the button is on or not.

View attachment CheckTest.zip