System tray icon disappears after a QInputDialog::getText

AmirHammoutene

Hi,
I'm building an app for recognising music played by speakers and suggesting links.

No MainWindow, it's a background app with a System tray icon.

I'm using QtCreator.

I have a problem with QInputDialog::getText , once I click on OK, the system tray icon disappears and I have to force to quit the app via QtCreator. Note that the background process still works after the icon disappears from the system tray, and that, in the code I wrote, the value saved in "apikey.txt" is correctly changed.

Here is the piece of code, and you will also find a part of the source code:

@void Window::changeTexte16()
{
bool dialogResult;
QString key;
QFile keyFile("apikey.txt");

if(!keyFile.exists()){
    keyFile.open(QIODevice::WriteOnly);
    QTextStream keyStream1(&keyFile);
    keyStream1 << "XXXXXXXXXXXXXXXXX";
    keyFile.close();
}

// Open apikey.txt and copy content in key (string)
keyFile.open(QIODevice::ReadOnly);
QTextStream keyStream2(&keyFile);
key = keyStream2.readLine();
keyFile.close();

QString result = QInputDialog::getText(this, "Echonest API Key", "Enter your API key:", QLineEdit::Normal,
                                       key, &dialogResult);

if(dialogResult) {
    keyFile.open(QIODevice::WriteOnly);
    QTextStream keyStream3(&keyFile);
    keyStream3 << result;
    keyFile.close();
}

}@

"the source code":http://www.qtfr.org/img/members/146981/main.zip

thanks in advance for the help

SGaist

Hi and welcome to devnet,

You need to add which Qt/OS combo you are currently using

AmirHammoutene

thank you,

5.2.1 and Windows 8, but I want it to work also on Win 7 (+ Vista and Xp if possible)

AmirHammoutene

32 bits

SGaist

Can you first update to 5.3.1 ?

AmirHammoutene

is there a way to update or shall I install the entire 5.3.1, because when I select C:/Qt for instalation, it says to change folder because an instalation already exist (the 5.2.1)

AmirHammoutene

-> this instalation : Qt Online Installer for Windows (14 MB)

AmirHammoutene

ok i'm installing the 5.3.1

AmirHammoutene

same problem

AmirHammoutene

the icon disapear after the QInputDialog::getText action

SGaist

Ok, can you reproduce this with a minimal example ?

AmirHammoutene

good idea, i'll try it

AmirHammoutene

it also does not work with a minimal exemple :

"icon_hidden":http://www.qtfr.org/img/members/146981/icon_hidden.zip

AmirHammoutene

in main :
if i replace w.hide(); by w.show(); the problem is fixed BUT a window is showed, even with a resize(0,0); and I don't want any window, just a system tray icon, so i must have w.hide(); in my code
how shall I do?

SGaist

You are missing

@a.setQuitOnLastWindowClosed(false);@

AmirHammoutene

great !!!
thank u for your help.

SGaist

You welcome !

Now that you have your application working, please update the thread title prepending [solved] so that other forum users may know a solution has been found :)