custom signals

[talk2amulya]

do we have to declare smth extra to use custom signals(our own defined signals)?

[spirit]

what do you mean?:confused: all what you need it add Q_OBJECT and emit for emitting a signal.

[jogeshwarakundi]

and if you wish to use your own data type as parameter, register it with the metatype system

[talk2amulya]

i declared the following signal in a class

signals:
void buttonClicked(int index);

and used the signal in a different class, to connect to a slot

bool isConnect = connect(_visualBrowsingWidget->_buttonContainer, SIGNAL(buttonClicked(int index)), this, SLOT(showCorrectWidget(int index)));

but signal doesnt connect, saying:

Object::connect: No such signal ViewButtonContainer::buttonClicked(int index)

i m sure i have used own signals before, so i m wondering why this is happening. do i have to declare the signal somewhere else also?

[spirit]

show us declaration of ViewButtonContainer.

[jogeshwarakundi]

inside the connect statement, you should not specify the parameter name....

connect(...SIGNAL(sometingHappened(int))....);

[talk2amulya]

here, the signal is declared:

class ViewButtonContainer : public QWidget
{
Q_OBJECT

public:
ViewButtonContainer(QWidget *parent);
~ViewButtonContainer();

enum ButtonIndex
{
VISUAL_BROWSING_VIEW,
JOB_SETTINGS_VIEW,
LIST_VIEW
};

private:
QPushButton *_visualBrowsingViewButton;
QPushButton *_jobSettingsViewButton;
QPushButton *_listViewButton;

private Q_SLOTS:
void handleClicked(bool);

signals:
void buttonClicked(int index);
};

here, the signal containing class is used

class VisualBrowsingView : public QWidget
{
Q_OBJECT

public:
VisualBrowsingView(QWidget* parent = 0);
~VisualBrowsingView();

ViewButtonContainer *_buttonContainer;

above class's object is used here to get the signal and call the slot

class StackedWidget : public PScreen, public IJobMgrView
{
Q_OBJECT

public:
StackedWidget(IMS1Shell *parent, IJobMgrControl *control );
~StackedWidget();

VisualBrowsingView *_visualBrowsingWidget;
ListView *_listWidget;

private Q_SLOTS:
void showCorrectWidget(int index);

[spirit]

jogeshwarakundi already pointed on a problem :)

[talk2amulya]

stupid mistake, sorry for wasting ur time guys, this should have been caught by me..copy/paste sux!!

[jogeshwarakundi]

jogeshwarakundi already pointed on a problem :)

interestingly, there is a "thanks" button but then no "you are welcome" button :D