MOJO Type Mismatch - Charles Yeoman's code

General
1

I was checking out the UUID code from Charles Yeomans MOJO code and it noticed it wouldn’t compile. I don’t write much introspection code so the error isn’t obvious to me.

Relevant Code

Evidently it’s a type mismatch but from what I can tell they’re both “typeinfo.”

Error

2

I cannot open the two links pointing to imager.com, but my assumption would be that you have a Using Xojo.Introspection clause somewhere in code or in the navigator, while Mojo is not based on the new framework.

3 
FUNCTION UUID() as String
  Dim result As String
  #If TargetCocoa
    Soft Declare Function NSClassFromString Lib "Cocoa" ( clsName As cfstringref ) As ptr
    Soft Declare Function UUID Lib "Cocoa" selector "UUID" ( clsRef As ptr ) As ptr
    Soft Declare Function UUIDString Lib "Cocoa" selector "UUIDString" ( obj_id As ptr ) As cfstringref
    Dim classPtr As Ptr = NSClassFromString( "NSUUID" )
    Dim NSUUID As ptr = UUID( classPtr )
    result = UUIDString( NSUUID )
  #ElseIf TargetWin32
    Const kLibName = "win32.Rpcrt4"
    Soft Declare Function UUIDCreate Lib kLibName alias "UuidCreate" ( ByRef uuid As WindowsUUID ) As Integer
    Soft Declare Function UUIDToString Lib kLibName alias "UuidToStringA" ( ByRef inUUID As WindowsUUID, ByRef outString As CString ) As Integer
    Dim uuid As WindowsUUID // Structure [x(15) as UInt8]
    Dim out As CString
    result = out
    result = result.DefineEncoding( Encodings.UTF8 )
    result = result.Uppercase
  #EndIf
  
  Return result
END FUNCTION
4

That’s strange. They open up fine for me. Are you on mobile?

5

Thanks for the code Dave. However, I was looking for something that would work across all the platforms including the Web (linux) and mobile.

6

At least iOS won’t give you access to the UUID anymore for security reasons.

You may have to settle for the MAC address.

7

[quote=300146:@Michel Bujardet]At least iOS won’t give you access to the UUID anymore for security reasons.

You may have to settle for the MAC address.[/quote]
MIchel … would you care to expand upon that statement?
there is nothing stopping you from generating a UUID with iOS, just need the correct band-aid (I mean declare) for Xojo

In Swift and ObjC it is REALLY difficult to to

    let uuid = UUID().uuidString // THIS IS NOT XOJO CODE... DO NOT PASTE INTO YOU XOJO PROJECT!!!!!!
8

I think he’s talking about the device UUID.

9

ah… good point… my brain (and the code I posted) was to CREATE a UUID

10

I was talking indeed about the device UUID. Besides, getting that information from a Web app is AFAIK completely impossible anyway.

11

Change that one line into

dim TestableClasses() as Introspection.TypeInfo
TestableClasses.Append GetTypeInfo(mojo.UUID)

12

Norman FTW.

13

<https://xojo.com/issue/46009>