Qt5 Get response from child dialog

Question

In my Qt5.7 program I have a password security. At some situations I want to ask user for password. I want to do it by separate QDialog. This dialog checks if password are good. And here is a problem. How Can I check from parent Dialog if authorisation was positive?

My dialog:

And code to show dialog:

PasswordGet pass;
pass.setWindowFlags(Qt::MSWindowsFixedSizeDialogHint);
pass.setModal(true);
pass.exec();

To sum up, I want to know if user clicks Cancel (dialog just close), or clicks Authorize (password was good, and dialog close)

How can I do this? I don't want to make new global bool and check from parent dialog if bool == 1, it's not secure.

Possible duplicate of [QDialog exec() and getting result value](http://stackoverflow.com/questions/12470806/qdialog-exec-and-getting-result-value) — demonplus, Jun 28 '16 at 12:12
@demonplus thank you for linking this thread, it helps me with solving my problem. Now my thread could be duplicate :/ — km2442, Jun 29 '16 at 20:36

score 1 · Answer 1 · answered Jun 28 '16 at 12:34

1

Don't reinvent the wheel, use the password dialog that Qt already provides. If you need examples of how to use Qt dialogs see their excellent example here: http://doc.qt.io/qt-5/qtwidgets-dialogs-standarddialogs-example.html

You would want to use QDialogEdit::getText with a QLineEdit::EchoMode of QLineEdit::Password. If you're expecting the user to enter: QString password Then your code will look something like this:

bool ok;
QString text = QDialogEdit::getText(this, tr("Authorization"), tr("Password:"), QLineEdit::Password, QString(), &ok);

if(ok && text == password) // Success, do you're action here

answered Jun 28 '16 at 12:34

Jonathan Mee

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Thank you for idea, but I have solved my issu another way. – km2442 Jun 29 '16 at 20:37
1

@KamilKlecha If possible you should post your solution here and accept it to benefit anyone coming after you who may also be struggling with the same issue! – Jonathan Mee Jun 29 '16 at 20:38

Qt5 Get response from child dialog

1 Answers1