How to access Qt GUI from an library using qt designer form

SGaist

Let me rephrase that: what toolkit does it use ?

Is it already using Qt ?

Are you building that app yourself or are you writing a plugin for it and have no access to its internals ?

Srujan

@SGaist
Its a tool for managing and validating a pkcs#11 module..
For more info please refer Cryptoki manager

VRonin

Can you post your code from which you call show_dialog1( ); ?

Srujan

@VRonin
simply I have called 'show_dialog1();' from one of exported functions in shared library..

VRonin

I suspect you are not creating the application. try Q_ASSERT(QCoreApplication::instance()); if it asserts (i.e. instance() returns NULL) then it means you simply forgot to crate the QApplication before creating any QWidget

SGaist

The question you are not answering is: are you working on that software code source directly ?

Srujan

@SGaist
yes

SGaist

Ok, then are you converting it to a full-blown Qt application ?

Srujan

@SGaist
If you are talking about- Cryptoki manager then i am not working on that application. I working on the library that is used to test with cryptokimanager(thrid party standard application).
As specified earlier, in my library there is a need of dialog part.

SGaist

So you are going to call the Cryptoki manager application from your code ?

Srujan

@SGaist
yes

SGaist

What's still not clear is whether you are writing a full-blown Qt application for that. Is it the case ?

Srujan

@SGaist yes now i have created separate qt application and invoking that application from library using pipe mechanism..
Now the issue is 'getting value from that application(what ever entered in qlineedit of dialog box)'

jsulm

@Srujan Your Qt application could write to stdout and your library would read stdout of that application and parse it. See the documentation for QProcess.

Srujan

@jsulm Thanks it worked..