Help with NSAttributedString

Targets macOS
1

I want to change the font size (system font) of a NSAttributedString. How do I do that with MacOSLib?

2

What have you tried that hasn’t worked?

3

Not sure how XOJO handles it… but if it helps here is some SWIFT code that does it

  sa.addAttribute(NSFontAttributeName , value: UIFont(name: "Courier-Bold", size: 17)!, range: NSMakeRange(2,8))
4

I tried:

Dim AttributedTitle As New NSMutableAttributedString("Test")
Call AttributedTitle.AddAttribute("NSFontAttributeName", NSFont.SystemFontOfSize(9))

But that gives an Exception Message: -[NSConcreteAttributedString addAttribute:value:range:]: unrecognized selector sent to instance 0xa017bd0

5

This looks as if instead of a mutableAttributedString an unmutable type is instantiated. Have you checked the constructur if it returns the mutableAttributedString class ptr?

6

I’m really shooting in the dark here, trying to figure this stuff out. I came up with this and it seems to work now.

Dim AttributedTitle As NSAttributedString
AttributedTitle = New NSAttributedString("Test")
    
Dim MutableAttributedTitle As NSMutableAttributedString
MutableAttributedTitle = New NSMutableAttributedString(AttributedTitle.MutableCopy)
    
Call MutableAttributedTitle.AddAttribute("NSFontAttributeName", NSFont.SystemFontOfSize(11))