PureBasic Forums - English

Posted: **Fri Aug 30, 2019 5:28 am**

I just came across this crazy code:

Global.i kCFBooleanTrue
Global.i kCFBooleanFalse
!mov rax, qword [kCFBooleanTruePtr]
!mov rdx, qword [kCFBooleanFalsePtr]
!mov rax, [rax]
!mov rdx, [rdx]
!mov [v_kCFBooleanTrue], rax
!mov [v_kCFBooleanFalse], rdx
DataSection
   !extern _kCFBooleanTrue
   !extern _kCFBooleanFalse
   !kCFBooleanTruePtr: dq _kCFBooleanTrue
   !kCFBooleanFalsePtr: dq _kCFBooleanFalse
EndDataSection

Isn't it time for PB to include a predefined kCFBooleanTrue and kCFBooleanFalse on macOS if it's such a 'difficult' value?

Posted: **Fri Aug 30, 2019 5:39 am**

Well, there is a huge discrepancy between build-in Windows constants and macOS ones...

Posted: **Fri Aug 30, 2019 5:56 am**

The problem is that something like kCFBooleanTrue is not a simple value but an object.

This will return the same by the way.

Code: Select all

Global.i kCFBooleanTrue = PeekI(dlsym_(#RTLD_DEFAULT, "kCFBooleanTrue"))
Global.i kCFBooleanFalse = PeekI(dlsym_(#RTLD_DEFAULT, "kCFBooleanFalse"))

Debug kCFBooleanTrue
Debug kCFBooleanFalse

And NSNumber can also be used.

Code: Select all

Debug CocoaMessage(0, 0, "NSNumber numberWithBool:", #YES)
Debug CocoaMessage(0, 0, "NSNumber numberWithBool:", #NO)

Posted: **Fri Aug 30, 2019 6:41 am**

Ah that looks much better. Makes this topic useful because I only found ASM code in the forum.
Thanks

PureBasic Forums - English

kCFBooleanTrue

kCFBooleanTrue

Re: kCFBooleanTrue

Re: kCFBooleanTrue

Re: kCFBooleanTrue