How do we know if our hand is on the button at TouchGFX?

[Freedom_Neo]

How do we know if our hand is on the button? e.g; If our hand is on a button, the led is always on, if we raise our hand over that button, the led turns off.

[MasterT]

Proximity sensors. Capacitive, thermal, IR reflective, make your choice.

[Andrew Neil]

What kind of "button" may have an influence...

[Freedom_Neo]

You misunderstood the question as the title is incorrect. I meant the prepare button with TFT GUI. You can read the post below.

https://community.st.com/s/question/0D53W00001YdFteSAF/long-press-button-increment-fast-value

[Andrew Neil]

"You misunderstood the question as the title is incorrect"

:face_with_tears_of_joy: :grinning_face_with_sweat: :>

So what does the TouchGFX documentation tell you?

Presumably, you get an event to tell you when it's "touched", and another to tell when that touch has gone away ... ?

"You can read the post below"

So why start a new thread if it's still the same question?

Did the solution provided there by @Yoann KLEIN​  not work?

[Freedom_Neo]

It's okay to detect that you're touching the button. I can't detect that you're pulling your hand away from the button

Did the solution provided there by @Yoann KLEIN (ST Employee)​ not work?

No, dont work

[Andrew Neil]

"No, dont work"

Then feed-back in the other thread so that he can help you further...

[Andrew Neil]

"I can't detect that you're pulling your hand away from the button"

But that is exactly what the example that @Yoann KLEIN​ linked you to does:

https://community.st.com/s/question/0D50X0000CBl0asSQB/long-touch-detect-on-stm32l4r9aieval

[Freedom_Neo]

I write below like this. But dont call handleClickEvent so dont get buttonPressedFlag = 1

void Ana_MenuView::handleClickEvent(ClickEvent& evt)
{
  if(evt.getType() == ClickEvent::PRESSED)
  {
	  buttonPressedFlag = 1;
  }
  else if(evt.getType() == ClickEvent::RELEASED)
  {
	  buttonPressedFlag = 0;
  }  
}
 
void Ana_MenuView::handleTickEvent()
{
	if (buttonPressedFlag)
	{
		temp_counter++;
		Unicode::snprintf(textArea2Buffer, TEXTAREA2_SIZE, "%d", temp_counter);
		textArea2.invalidate();
	}
}

[Andrew Neil]

Did you read & follow the rest of the linked thread?

Particularly, "Look at how a Button and AbstractButton is implemented" ...