QTableWidget right click menu

Hi.
Im starting to use Qt, and after installation/building/starting_project probelm i have a problem for which i can't find solution searching the forums..

I need to add a (right mouse button click) menu to QTableWidget, but i can't get it working.

Code:

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frmSettings::frmSettings(QWidget *parent)
    : QDialog(parent)
{
	ui.setupUi(this);
 
	context= new QMenu(this);
	context->addAction("Add");
	context->addAction("Delete");
 
	connect(ui.tableOptimizationVariables, SIGNAL(customContextMenuRequested(QPoint* position)), SLOT(frmSettings::ProvideContexMenu(position))); 
}
void frmSettings::ProvideContexMenu(const QPoint* position)
{
	context->exec(*position);
}

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tableOptimizationVariables is QTableWidget

Thanx

You cannot put variable names but just types inside SIGNAL() and SLOT() macros and there is no such signal as QWidget::customContextMenuRequested(QPoint*). It's a reference, not a pointer.

So it should be:

Code:

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connect(ui.tableOptimizationVariables, SIGNAL(customContextMenuRequested(const QPoint&)), SLOT(ProvideContexMenu(const QPoint&)));

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Also, did you switch the context menu policy to Qt::CustomContextMenu?

thank you, but its not working.
Yes ContextMenuPolicy was set to CustomContextMenu in .ui file. I treid to do this in constructor but without success:

Code:

---

frmSettings::frmSettings(QWidget *parent)
    : QDialog(parent)
{
	ui.setupUi(this);
 
	context= new QMenu(this);
	context->addAction("Add");
	context->addAction("Delete");
	ui.tableOptimizationVariables->setContextMenuPolicy(Qt::CustomContextMenu);
//	connect(ui.tableOptimizationVariables, SIGNAL(customContextMenuRequested(QPoint* position)),frmSettings, SLOT(ProvideContexMenu(position))); 
	connect(ui.tableOptimizationVariables, SIGNAL(customContextMenuRequested(const QPoint&)), SLOT(ProvideContexMenu(const QPoint&)));
}
void frmSettings::ProvideContexMenu(const QPoint* position)
{
	context->exec(*position);
}

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Can somebody give me complete code (it shoud be couple of lines) for calling context menu? Is it diferent for different controls? Maybe some QTableWidget-specific stuff must be done?

//LATER ADDED TEXT

I tried to link contect menu to QLineEdit control (to see if default copy/cut/paste menu is invoked):

Code:

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ui.tableOptimizationVariables->setContextMenuPolicy(Qt::CustomContextMenu);
	ui.txtName->setContextMenuPolicy(Qt::CustomContextMenu); 
	connect(ui.tableOptimizationVariables, SIGNAL(customContextMenuRequested(const QPoint&)), SLOT(ProvideContexMenu(const QPoint&)));
	connect(ui.txtName, SIGNAL(customContextMenuRequested(const QPoint&)), SLOT(ProvideContexMenu(const QPoint&)));

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So i lost "Copy/Cut/Paste/|/Select All" menu, which mean that context menu is set to custom? But when i debugged I noticed that slot void frmSettings::ProvideContexMenu(const QPoint* position) is never entered. What am I doing wrong?

You forgot to adjust frmSettings::ProvideContexMenu(). It still takes a pointer.

The easiest way to construct a context menu is to use Qt::ActionsContextMenu. All it takes is to add actions via QWidget::addAction() and the menu is constructed automatically for you:

Code:

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setContextMenuPolicy(Qt::ActionsContextMenu);
QAction* fooAction = new new QAction("foo");
QAction* barAction = new new QAction("bar");
connect(fooAction, SIGNAL(triggered()), this, SLOT(doSomethingFoo()));
connect(barAction, SIGNAL(triggered()), this, SLOT(doSomethingBar()));
addAction(fooAction);
addAction(barAction);

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Quote:

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Originally Posted by jpn

You forgot to adjust frmSettings::ProvideContexMenu(). It still takes a pointer.

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YES! ;) thank you. I'm used to .NET warnings for every litle thing.. so im kinda strugling with QT.. :)
Replies on my post where fast and exact :) nice forum guys!

Quote:

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Originally Posted by stefan

YES! ;) thank you. I'm used to .NET warnings for every litle thing.. so im kinda strugling with QT.. :)

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Signal slot connections are established at run time, that's why there is no error/warning at compilation time. Notice that QObject::connect() outputs a detailed warning in the debug output in case establishing the connection fails.

Quote:

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Replies on my post where fast and exact :) nice forum guys!

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Thanks, you're welcome. :)