Q3Table event filter problem

[batileon]

I m porting qt3 codes to qt4.
Here I have a class TableGrid which inherits Q3Table (inherit QTable originally)



class TableGrid : public Q3Table {
public:
MyTableGrid( int numRows, int numCols, QWidget* parent, const char* name);
void paintCell(QPainter *p, int row, int col, const QRect& cr, bool selected, const QColorGroup& cg);
};


and I used this TableGrid in another class MyTable:


class MyTable : public QWidget
{
Q_OBJECT

public:
...
...
TableGrid* tbl; // Table
...
...
...
}


And I called

tbl->installEventFilter( this );
to set the event filter.

The objective is to filter the mouse button pressed event signal.



bool MyTable::eventFilter ( QObject * obj, QEvent * e ){
bool retval = false;
if( QString(obj->name())==QString("tbl") )
{
if( e->type()==QEvent::Resize )
{
configTable();
retval = true;
}
else if( e->type()==QEvent::MouseButtonPress )
{
tbl_mousePress();
retval = true;
}
}
return retval;
}


This work in the past (QT3)
however I found that in QT4, the MouseButtonPress QEvent can no longer received when I click on the TableGrid.

Can anyone tell me what's going wrong??
Thanks a lot

[yxmaomao]

Could you try:

tbl->viewport()->installEventFilter( this );

[batileon]

Thanks!
It works~

But what's the difference of that viewport?
And is that in QT4 the mouse related event will not be filtered?