closing a dialog

[chrisb123]

Either create m_webapp inside m_setapp or have m_setapp emit a signal and connect that to the show-slot of m_webapp.

I'll have to read up on that

I want the widget to not create the web app utill its called for e.g.

void mum::web() {
  if ( ! m_webapp ) {
    m_webapp = new webapp(NULL);
  }
  m_webapp->show();
}

void mum::web() {
  if ( ! m_webapp ) {
    m_webapp = new webapp(NULL);
  }
  m_webapp->show();
}

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How do I destroy m_webapp after closing it?

[axeljaeger]

Just delete it in the destructor. (once in the lifetime of your application).

[chrisb123]

delete it like this?

webapp::~webapp(){
  delete this;
}

webapp::~webapp(){
  delete this;
}

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doesnt seem to delete m_webapp

also emitting the signal and connecting to it
what am I doing wrong?

m_setapp = new SetApp(NULL);
    connect(m_setapp, SIGNAL(showeb()), this SLOT(web()));
}
void mum::web() {
  m_webapp->show();
}
..................
  connect( pushButton_node, SIGNAL( clicked() ), this, SLOT( node() ) ); 
}
void SetApp::node() {
  emit showeb(); //this pushbutton code work

m_setapp = new SetApp(NULL);
    connect(m_setapp, SIGNAL(showeb()), this SLOT(web()));
}
void mum::web() {
  m_webapp->show();
}
..................
  connect( pushButton_node, SIGNAL( clicked() ), this, SLOT( node() ) ); 
}
void SetApp::node() {
  emit showeb(); //this pushbutton code work

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or can I do I connect to a slot in a different class?

[axeljaeger]

delete this in a destructor is an infinite recursion.

delete calls the destructor. It is basically calling a method within itself. This will not work.


Regarding your signal & slots connection: What does not work? Do you get any warnings in the console? Do all connect-statements return true?

[chrisb123]

delete this in a destructor is an infinite recursion.

delete calls the destructor. It is basically calling a method within itself. This will not work.

closing it does not destroy it, it just hides it

Regarding your signal & slots connection: What does not work? Do you get any warnings in the console? Do all connect-statements return true?

syntax error, i missed the , after this
it works as expected

[axeljaeger]

closing it does not destroy it, it just hides it

What do you want to tell me?

[chrisb123]

Think I've worked it out
I want the plasmoid to display a seperate dialog and QWebView when requested.
I dont want the QWebView to be always loaded but hidden

So currently it does the following, From my understadning

1. when the plasmoid starts it creates the constructor which just creates the dialog
2. when i select the item to show the dialog I use showEvent to create a QWebView and display the page.
3. When I close the dialog I use closeEvent to delete the QWebView

What can I use as profiling software?

[axeljaeger]

Why on earth do you want to create the webView in the showEvent and destroy it when it gets closed? Just do it like anyone else: Create it in the constructor let it Qt destroy when necessary. Dont try to be too clever, keep it simple stupid, trust Qt.

You can use either valgrind or oprofile for profiling. But if there is already need for profiling, then your computer has a problem.