Change HIDDEN flag in flow...?

[rghince]

I have a switch widget to control the visibility of a container. I have created a flow event handler on the RELEASED event which examines the checked status of the switch using IsTrue. If true, this sets the visibility of the container using LVGL flow object Obj Set Flag Hidden to OFF. If false I use another Obj Set Flag Hidden to set it to ON.

This arrangement indeed clears the hidden flag of the container and makes it visible as desired; however the opposite is not the case. The Obj Set Flag Hidden to ON does not change the visibility status of the container, it remains visible on the screen both in the simulator and also when uploaded to the device.

I have tried various other arrangements (eg using flow Compare, changing the event trigger etc etc,) but the behaviour remains the same regardless.

Any ideas on what's wrong here? My error?

[mvladic]

Expression LV_STATE.CHECKED is wrong here - it is always true, so IsTrue will always go through Yes output.

There are CHECKED and UNCHECKED events, use those:

Or you can store switch checked state in variable (altitude_visible in the attached project):

and use that variable for the altitude display widget hidden state (!altitude_visible):

Both ways are implemented in the following project:

lvgl_switch_and_hidden_flag.zip

[rghince]

Thanks - of course, it's working fine now, I am still learning how to use EEZ Studio - it's a fantastic tool and easily as good as Squareline Studio... if not better in some respects.