[Interest] Send Data to JavaScript

Giuseppe D'Angelo giuseppe.dangelo at kdab.com
Mon Apr 12 15:35:38 CEST 2021

On 12/04/2021 15:17, John Schneiderman wrote:
> What I'm expecting is that mappings would be transformed on the
> JavaScript side as:
> mappings {
>       "key" : ["abc", "def"]...
> }
> However, when I try to view the data in the emitted signal it's always
> null. Any suggestions where I should look for more answers or perhaps
> I'm going in an incorrect direction?

Are you sure about the transformation? Only certain data types are 
supported for the C++ <-> QML data exchange, and I don't believe the one 
you're using is:


In other words, you may need to change the datatype / transform it 
somehow before giving it to QML. (Also do you want to just _read_ it 
from QML or also write into it? The above QML syntax looks a bit sketchy...)

Giuseppe D'Angelo | giuseppe.dangelo at kdab.com | Senior Software Engineer
KDAB (France) S.A.S., a KDAB Group company
Tel. France +33 (0)4 90 84 08 53, http://www.kdab.com
KDAB - The Qt, C++ and OpenGL Experts

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