error: invalid use of incomplete type 'class BaseDialog'

tcMenu Arduinio library » error: invalid use of incomplete type 'class BaseDialog'

Author: Lee_X
17/10/2022 14:41:07

Hi I'm trying to display a simple dialog but I get compile errors on ESP32-S2

I'm following this: https://www.thecoderscorner.com/products/arduino-libraries/tc-menu/rendering-with-tcmenu-lcd-tft-oled/

BaseDialog* dlg = renderer.getDialog();
dlg->setButtons(BTNTYPE_OK, BTNTYPE_CANCEL, 1);
dlg->show("hello", false, onDialogFinished);

gives:
error: invalid use of incomplete type 'class BaseDialog' dlg->setButtons(BTNTYPE_OK, BTNTYPE_CANCEL, 1);

Has something changed in the last version of tcMenu? What is the correct way to display (and hide!) an alert in version 2.4.0?

Thanks!

Author: Lee_X
17/10/2022 15:22:34

also tried this from the latest esp32 s2 example:

auto dlg = renderer.getDialog();
  if (!dlg->isInUse()) {
    dlg->setButtons(BTNTYPE_NONE, BTNTYPE_CLOSE);
    dlg->showRam("Saved", false);
    dlg->copyIntoBuffer("to flash");
  }

which gives

error: invalid use of incomplete type 'class BaseDialog' if(!dlg->isInUse()) { .... note: forward declaration of 'class BaseDialog' class BaseDialog;

so any idea on how to show a dialog would be great!

Author: davetcc
17/10/2022 15:47:06

After upgrading to library 2.4, did you also upgrade the UI and run the code generator to ensure the plugins were up-to-date?

If you didn't want to do that, you could copy the same display plugin files from one of the examples, it would have the same effect.

Author: davetcc
17/10/2022 15:50:43

Ah, also make sure you

#include <BaseDialog.h>

in the file in question.

Author: Lee_X
17/10/2022 16:25:53

thanks Dave, forgot about that! smilie

Author: davetcc
17/10/2022 16:49:14

I've updated the docs to make it more clear that it is needed.