Showing a message box in one line (🟢 Beginner)

How to display a message box on a line in xtd unlike other frameworks.

wxWidgets code

#include <wx/app.h>
#include <wx/msgdlg.h>

class Application : public wxApp {
  bool OnInit() override {
    wxMessageDialog {nullptr, "Hello, world!", "my_app"}.ShowModal();
    return false;
  }
};

wxIMPLEMENT_APP(Application);

• Requires an Application class inheritate from wxApplication
• Override OnInit method
• Creates wxMessageDialog and shows it with ShowModal method

Qt code

#include <QApplication>
#include <QMessageBox>

auto main(int argc, char* argv[]) -> int {
  auto application = QApplication {argc, argv};
  QMessageBox {QMessageBox::Icon::NoIcon, "my_app", "Hello, World!"}.exec();
}

• Requires an instance of QApplication
• Creates QMessageBox and shows it with exec method

xtd code

#include <xtd/xtd>

auto main() -> int {
  // Just call message_box::show in one line!
  message_box::show("Hello, World!", "my_app");
}

• Displays a message box with a single call to message_box::show

Conclusion

• In xtd, showing a message box is exactly what it should be: one clear line of code. No ceremony. Just results.
• No boilerplate or unnecessary instantiation.
• You just have to focus on your own code.
• See xtd::forms::message_box for more information.

Did you know?

You don’t even need to create a main window or application in xtd to show a dialog. It's fully standalone.

See also

• Tips & Tricks
• Documentation