Login window

andre

Actually, the window will be accessible via the QApplication object. You are right in principle, but things are not as bad as they seem :-)

Jeroentjehome

Ah, oke, learned something new there. Nice, but still it is bad pratice to create a new object and don't keep the pointer at hand ;-)

issam

Hi all,
I tried to resolve the problem by writing a code example: (Connecting to a PostgreSQL data base)

create a login window

create a data base connection

show the login window

enter the username and the passwd (repeat until the login is accepted or the operation is canceled)

login succeeded ==> create and show the main window

@
int main(int argc, char *argv[])
{
QApplication app(argc, argv);

LoginWindow Lwindow;

/* accepted = 1; rejected = 0; */
int result;
bool pass = false;
int response;

QSqlDatabase Dbase;
Dbase = QSqlDatabase::addDatabase("QPSQL");
Dbase.setHostName("localhost");
Dbase.setDatabaseName("database_name");

while(!pass)
{
Lwindow.exec();
result = Lwindow.result();
if(result == 0)
{
pass = true;
Lwindow.done(0);
return 0;
}
else
{
QString user = Lwindow.getUser();
QString password = Lwindow.getPassword();
Dbase.setUserName(user);
Dbase.setPassword(password);
pass = Dbase.open();

/* if(m_dbase.lastError().isValid()) */
if(!pass)
{
response = QMessageBox::critical(NULL, "Data Base Access Problem",Dbase.lastError().text(),QMessageBox::Cancel|QMessageBox::Retry);
if(response == QMessageBox::Cancel)
{
pass = true;
return 0;
}
}
}
}

MainWindow Mwindow(Dbase);
Mwindow.setGeometry(100,100,500,600);
Mwindow.show();
return app.exec();
}

@

andre

[quote author="issam" date="1348049464"]Hi all,
I tried to resolve the problem by writing a code example like this :
[/quote]

Nice. And what was the result of that attempt? Did it work? If it did: congrats. If it did not: what failed exactly? What did you expect?

Jeroentjehome

If you ask me it should work just fine. Maybe a bit of comments to add, but looks fine to me. Did it work??

issam

It works well ! ;)

"download...":http://www.iissam.com/dbases/index.html

andre

In that case, please go and edit your first post in this topic to add a [Solved] tag to the title.

Macro

[quote author="issam" date="1348128467"]
It works well ! ;)

"download...":http://www.iissam.com/dbases/index.html
[/quote]

Thank you....

? Offline

Dear issam,

Where is the Lwindow definition? Do you separate into lwindow.cpp and lwindow.h?

Thanks in advance.

issam

Yes in loginwindow.h and LoginWindow.cpp :)

sinant

Can you reupload the source code :) ?