Subclass Problem

[rleojoseph]

int main(int argc, char *argv[]){
    QApplication a(argc, argv);
    Text w;
    w.show();
    return a.exec();
}

int main(int argc, char *argv[]){
    QApplication a(argc, argv);
    Text w;
    w.show();
    return a.exec();
}

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This is where the error i am gettting from main.cpp.
I was creating a textEdit by code not in designer form ,like this

textEdit = new QTextEdit(this);

textEdit = new QTextEdit(this);

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I just want to know how to promote the custom MyTextEdit(which inherits QTextEdit) class to texEdit area....