So i am basically almost done with my C++ App Logic Wise tho the only thing i struggle with and wanna figure it is how to include a seperate class into my main class constructors >.>

Mostly due to the fact that currently in my Code my main Code has 2 Objects tho ErrorWin Object is right now the only one that exist twice as seperate Objects which itd like to fix >.>

So this is my first Object in my Main Function which just calls my DisplayWindow Function while my ErrorWin Object calls the Display Error Window Function :P

int main() {
  ErrorWindow ErrorWin;
  MainWindow MainWin;

  if (ProgramPath.empty()) {
    ErrorWin.DisplayErrorWindow();
    return Fl::run();
  }

  MainWin.DisplayMainWindow();
  return Fl::run();
}

Now the Main Issue is that only my First Text basically gets displayed in the Error Window even tho my switch Statement is set to display a different error text basically according to my callback but that obviously does not work due to theyre being seperate ErrorWin Objects :(

void MainWindow::CallbackSaveFile(Fl_Widget* Widget, void* Data) {
  MainWindow* MainWindowData = static_cast<MainWindow*>(Data);
  ErrorWindow ErrorWin;

  if (!MainWindowData->InputFile.empty()) {
    ...
  } else {
    ErrorWin.DisplayErrorWindow();
  }
}