How to read registry entries

[jpn]

So are you 100% sure that the registry path is correct? Does this assert?

QSettings settings("HKEY_CURRENT_USER", QSettings::NativeFormat);
Q_ASSERT_X(settings.childGroups().contains("Software"), "Software", "Software doesn't exist");
settings.beginGroup("Software");
 
Q_ASSERT_X(settings.childGroups().contains("Burn"), "Burn", "Burn doesn't exist");
settings.beginGroup("Burn");
 
Q_ASSERT_X(!settings.allKeys().isEmpty(), "Keys", "Software/Burn is empty");
qDebug() << settings.allKeys();

QSettings settings("HKEY_CURRENT_USER", QSettings::NativeFormat);
Q_ASSERT_X(settings.childGroups().contains("Software"), "Software", "Software doesn't exist");
settings.beginGroup("Software");

Q_ASSERT_X(settings.childGroups().contains("Burn"), "Burn", "Burn doesn't exist");
settings.beginGroup("Burn");

Q_ASSERT_X(!settings.allKeys().isEmpty(), "Keys", "Software/Burn is empty");
qDebug() << settings.allKeys();

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[Abc]

If I include this snippet, I don't get any output.
Infact, qDebug does not work for me I guess.

Just don't know how to get this working...

[jpn]

You could have said that earlier when I asked for the output of childKeys() and childGroups(). In case you're using an IDE of some kind, check its output console. In case you're not, enable console by adding

CONFIG += debug console

CONFIG += debug console

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to the .pro file, re-run qmake, make clean and recompile the application. Now you should see some output in the console window.

[Abc]

If I include this in the .pro file, the application does not build.

I am writing Qt code in notepad++ and using Qt 4.4.0 Command Prompt to build my application.

I did this... added the given line to .pro file, did a make clean and then qmake followed by a make.
The error message reads like...
C:\MinGW\bin\..\lib\gcc\ming32\3.4.5\..\..\..\..\m ingw32\bin\ld.exe: cannot find -lQtGuid4
collect2: ld returned 1 exit status
mingw32-make[1]: *** [debug\myApplication.exe] Error 1
mingw32-make[1]: Leaving directory '<path to the directory>'
mingw32-make: *** [debug] Error 2

[jacek]

You don't have Qt libraries built in debug mode. There should be a "Build Qt in debug mode" or similar link in start menu.