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scottSD
scottSD
Senior III
May 14, 2020
Solved

Is there a way to pass more than one value through an action to a custom container?

  • May 14, 2020
  • 4 replies
  • 1959 views

I must say that the recently updated TouchGFX documentation is excellent. Great job!

I apologize if I am missing the obvious, but is there a way to pass more than one value by way of an "action" to a Custom Container?

I am referencing the following tutorial:

https://support.touchgfx.com/docs/tutorials/tutorial-05/

I am working on a Custom Container with a Scrollwheel in it and I would like to add a custom action to be able to change the text of a specified element (a second parameter) programmatically. I tried the "custom" and when trying to add the action, I was not able to get it to accept a multiple parameter virtual function or when selecting "Execute C++ code".

Any help would be appreciated.

This topic has been closed for replies.
Best answer by Martin Stig STISSING

@scottSD​ Your input is really appreciated. We would like to make this more obvious.

What you can do for now:

Instead of having an action/method with two parameters, you could create an action/method that expects one struct parameter.

In Designer an example definition would be:

0693W000001cKfEQAU.png

And an example usage would be:

0693W000001cKfYQAU.png

Hope this helps.

4 replies

scottSD
scottSDAuthor
Senior III
May 14, 2020

I found out that when adding the "type", you can enter what types you want, separated by a comma. I had previously attempted to copy/paste a type with a variable from some code I was using:

Unicode::UnicodeChar* uCharText, uint8_t index

All that is necessary are the types:

Unicode::UnicodeChar* , uint8_t

Which creates a virtual function prototype in the base of the Custom Container:

virtual void SetElementText(Unicode::UnicodeChar* , uint8_t value);

And things work fine when calling this function.

Like I said, I was probably missing the obvious....

Anyway, my initial compliment of the new documentation stands. It is done very well.

    Martin KJELDSEN
    Martin KJELDSEN
    Principal III
    May 15, 2020

    Thanks, Scott! We put a lot of effort into it - Feel free to give us some input if you feel something is not clear enough =)

    Re: your question, good job on finding out on your own. My response would have been that there's no obvious way to do what you wanted =) There'll be better support from the designer on this particular "issue" in the future.

    /Martin

    Martin Stig STISSING
    Martin Stig STISSINGBest answer
    ST Employee
    May 15, 2020

    @scottSD​ Your input is really appreciated. We would like to make this more obvious.

    What you can do for now:

    Instead of having an action/method with two parameters, you could create an action/method that expects one struct parameter.

    In Designer an example definition would be:

    0693W000001cKfEQAU.png

    And an example usage would be:

    0693W000001cKfYQAU.png

    Hope this helps.

    scottSD
    scottSDAuthor
    Senior III
    May 18, 2020

    That is helpful! I will get the hang of it one of these days ;) .

    Overall, I think the new documentation is awesome.

    I do appreciate that one can use the Designer to create virtual functions that can be used in user code.

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