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Pic-Error?

 Hello,
can someone explain to me what is wrong here?
The graphics memory is not deleted.

Here I begin:

image

then I go here

image

actually there should be a sun, but it will be green
SD card. But this is not called at any time

then I go here

image

there is a sun

then I go back here

image

here is the same sun to see, but will not be here at any time
called.

Where could the error lie?

Greeting and thanks
Andreas


perhaps upload hmi to find error in code

Definitely, a green SD card does not show if not called.

Nextion uses simplex statement.

To use complex statements,

   the full evaluation will happen on each val after operator - in full.




Change of page will indeed change graphics

All is dumped to loaded from HMI as per design


Only a no-background page will keep old

 - with such page selectively overwriting existing


Also
https://nextion.itead.cc/forums/topic/basic-understandings-for-designing-a-nextion-hmi/


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Hello Patrik,

the Nextion does not do what I think. It makes exactly that-
what I tell him.

The-

"Change of page will indeed change graphics
All is dumped to loaded from HMI as per design
Only a no-background page will keep old
- with such page selectively overwriting existing"

has helped me a lot. All good.
Many thanks for your effort.
Greeting and fun
Andreas

 

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