USEUNIT (C++ Builder) Equivalent...

James Sprinks

Hi All.

I am trying to appropriate some code written in C++ builder.

within the main.cpp code it has a USEUNIT command, followed by a class, i.e.

USEUNIT("dsnotifydlg.cpp");

//____________________________________________________

WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int)
{
    try
    {
        Application->Initialize();
        Application->CreateForm(__classid(TForm1), &Form1);
        Application->Run();
    }
    catch (exception &exception)
    {
        Application->ShowException(&exception);
    }
    return 0;

Could anyone tell me the equivalent to USEINIT in QT?

Thanks

J

James Sprinks

I should add this code is from 15 years ago. I have seen comments suggesting it has been replaced with #include so I will try that and report back!

mrjj

Hi
You dont need it in Qt.
Also there is no concept of auto created forms so a plain main looks like

#include "mainwindow.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w; // same as CreateForm (ish)
    w.show();

    return a.exec(); // same as  Application->Run();
}

mrjj

@James-Sprinks

Yes, you can say useunit is now just plain .h includes.

Also notice that Widgets/controls can be local variables so this is perfectly valid.
(unlike builder where you MUST new them)

void showdialog() {
MyDialog dia;
dia.exec(); // blocking so safe to use non pointers
}

James Sprinks

Yep I thought as much! Thanks for the help!