[Interest] Import C++ types to Javascript

[jhihn at gmx.com]

This is new territory for me.  Could you tell me what i need to do for both?  In this case I can make a singleton,  but in the future maybe I can't.  

Many thanks. 

-----Original message-----
Sent: Saturday, 28 November 2015 at 02:21:06
From: "Jérôme Godbout" <jerome at bodycad.com>
To: "Jason H" <jhihn at gmx.com>
Subject: Re: [Interest] Import C++ types to Javascript
If your object is not a singleton you will need to create an instance to call the function on that object. I suggestion you keep your staticfunction  call into a singleton. So you don't need an instance.

> On Nov 27, 2015, at 8:11 PM, Jason H <jhihn at gmx.com> wrote:
> 
> I just checked, it is a slot. I just feel like I'm missing something. Do I need to make a instance?
> var instance = new MyLib.Hash() ?
> var hash = instance.sha1("data")
> 
> 
>> Sent: Friday, November 27, 2015 at 7:50 PM
>> From: "Jérôme Godbout" <jerome at bodycad.com>
>> To: "Jason H" <jhihn at gmx.com>
>> Cc: interest <interest at qt-project.org>
>> Subject: Re: [Interest] Import C++ types to Javascript
>> 
>> Make sure your function is Q_INVOKABLE or is a slot. also take care .pragme library is not possible with javascript and object from c++ access
>> 
>>> On Nov 27, 2015, at 7:43 PM, Jason H <jhihn at gmx.com> wrote:
>>> 
>>> Per http://doc.qt.io/qt-5/qtqml-javascript-imports.html
>>> 
>>> I am trying to in a JS file, import a class I made and exposed to QML via
>>> 
>>> hash.h:
>>> class Hash :public QObject {
>>> Q_OBJECT
>>> ...
>>> QString sha1(QString str);
>>> }
>>> 
>>> main(): 
>>> qmlRegisterType<Hash>("MyLib", 1, 0, "Hash");
>>> 
>>> myfile.js:
>>> .import MyLib 1.0 as MyLib
>>> 
>>> function myFunc(obj) {
>>>   return MyLib.Hash.sha1(JSON.stringify(obj));
>>> }
>>> 
>>> but what I get when I call it is:
>>> qml: Parse Error: TypeError: Property 'sha1' of object [object Object] is not a function
>>> 
>>> What am I doing wrong?
>>> JSON.Stringify-ing the MyLib or MyLib.Hash returns {}
>>> 
>>> 
>>> 
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>>