I'm having a play around with Qt mainly looking to rewrite an old java app for symbian and I have got my self a bit confused.
I should first of all explain that C++ is not my kung-fu, and that may be the cause of the problem.
What I am trying to do is add a simple QPushButton to a Vertical Layout in a main window which has been built in qt designer at run time.
My example code is something like this…
QPushButton button = new QPushButton();
QString text("Testing Buttons");
button.setText(text);
//How do we add children to this widget??
ui->myLayout->addWidget(button);
The errors I am getting are as follows…
/home/graham/myFirstApp/mainwindow.cpp:22:
error: conversion from ‘QPushButton*’
to non-scalar type ‘QPushButton’
requested/home/graham/myFirstApp/mainwindow.cpp:27:
error: no matching function for call
to
‘QVBoxLayout::addWidget(QPushButton&)’/home/graham/myFirstApp/../qtsdk-2010.05/qt/include/QtGui/qboxlayout.h:85: candidates are: void
QBoxLayout::addWidget(QWidget*, int,
Qt::Alignment)
Now I know the first error has something to do with pointers but I don't know what, if anyone is able to clear up my confusion and provide example code that would be great.
Regards
Graham.
Best Answer
This is a merely C++ problem, you need to use asterisk to declare the button as pointer when you use new-operator.