How to get QTableWidget + QComboBox together and how to access perticular row if value is changed from QComboBox of same row

OmkarD

I am stucked at the combination of QTableWidget + QComboBox.

As showing in the screenshot, what I want is that, whenever I want insert new item inside table after hitting ADD button, new row should be inserted into the table and at the end I want Drop Down box with text of Allow and Block.

webFilterCat = new QTableWidget(0);
webFilterCat -> verticalHeader()->setDefaultSectionSize(15);
webFilterCat -> setMaximumWidth(310);
webFilterCat -> setMinimumWidth(310);
webFilterCat -> setMaximumHeight(170);
webFilterCat -> setMinimumHeight(170);
/* Set Row and Coloumn Count*/
//webFilterCat->setRowCount(10);
webFilterCat->setColumnCount(3);

/* Table Header */
tableHeader<<"Category"<<"Status"<<"Action";
webFilterCat -> setHorizontalHeaderLabels(tableHeader);
webFilterCat -> horizontalHeader()->setDefaultSectionSize(100);

// ------ Insert Data -------
webFilterCat->insertRow ( webFilterCat->rowCount() );
webFilterCat->setItem(( webFilterCat->rowCount() -1 ), 0, new QTableWidgetItem(extName));
webFilterCat -> setItem(( webFilterCat->rowCount() -1 ), 1, new QTableWidgetItem("Block"));
webFilterCat -> setCellWidget ( ( webFilterCat->rowCount() -1 ), 2, new QComboBox( webFilterCat ) );

I am getting QComboBox at every row after adding item into table but I cant set label (i.e. Allow or Block) to QComboBox and How to access that perticular row after value is changed in QComboBox.

I am using qt 4.2 and compiling code using linux terminal.

In short not using qt creator , using command line qt.

VRonin

setCellWidget should burn in hell. See https://wiki.qt.io/Combo_Boxes_in_Item_Views for the correct way to do this. You can then connect do the dataChanged signal of the model to detect changes in the combobox

OmkarD

I found solution for my problem .

webFilterCat = new QTableWidget(0);
webFilterCat -> verticalHeader()->setDefaultSectionSize(15);
webFilterCat -> setMaximumWidth(310);
webFilterCat -> setMinimumWidth(310);
webFilterCat -> setMaximumHeight(170);
webFilterCat -> setMinimumHeight(170);
/* Set Row and Coloumn Count*/
//webFilterCat->setRowCount(10);
webFilterCat->setColumnCount(3);

/* Table Header */
tableHeader<<"Category"<<"Status"<<"Action";
webFilterCat -> setHorizontalHeaderLabels(tableHeader);
webFilterCat -> horizontalHeader()->setDefaultSectionSize(100);

for(int i=0; i<row_count; i++){
	// ------ Insert Data -------
	webFilterCat->insertRow ( webFilterCat->rowCount() );
	webFilterCat->setItem(( webFilterCat->rowCount() -1 ), 0, new QTableWidgetItem(extName));
	webFilterCat -> setItem(( webFilterCat->rowCount() -1 ), 1, new QTableWidgetItem("Block"));
	/*webFilterCat -> setCellWidget ( ( webFilterCat->rowCount() -1 ), 2, new QComboBox( webFilterCat ) );*/

	cmbCatAllowOrBlock = new QComboBox ( 0 );

	cmbCatAllowOrBlock -> setFixedSize ( 80, 20 ); // 75, 20
	cmbCatAllowOrBlock -> addItem ( "Allow" );
	cmbCatAllowOrBlock -> addItem ( "Block" );
	cmbCatAllowOrBlock -> setCurrentIndex( 0 );

	webFilterCat -> setCellWidget ( ( webFilterCat->rowCount() -1 ), 2, cmbCatAllowOrBlock );
}

I got the solution what I need as shown below.

and got solution for this problem as well

How to access that perticular row after value is changed in QComboBox ?

What I did, at the time of read perticular QComboBox of perticular row. I will not try to read perticular QComboBox of perticular row. I only need the changed state of the QComboBox, so I will read whole table and compare with previous one and able to find the change.

So, how to read QComboBox row by row is

for(int i=0;i<(webFilterCat->rowCount() -1);i++){
       QComboBox* combo=(QComboBox*) webFilterCat -> cellWidget(i, 2);
       qDebug() <<  combo -> currentText();
}

VRonin

I can't disagree more with the above solution