Solved how can i use mouse event on Qtablewidget

[srikanth]

Am using a table widget with mouse event , everything is works fine , but coming to edit table am able to modify by using keyboard only ,not by mouse , i want both keyboard and mouse to be work on table widget , but table is transparent for mouse to not make modifies the table .

am using this logic apart from this is there any else to operate on both

table->setAttribute(Qt::WA_TransparentForMouseEvents);

(sorry for my english), any help is appreciated.

[Chris Kawa]

I'm not sure I understand.
Do you wan't the edit to be triggered by mouse or not?

table->setAttribute(Qt::WA_TransparentForMouseEvents);

This will disable all mouse events for the widget. The events will go to whatever is under it. Is that what you want?

QTableWidget inherits QAbstractItemView , which has a setEditTriggers() method to control how editing is started - via mouse, keyboard or selection change.
I don't see what do you need a mouse event for.

[srikanth]

@Chris-Kawa how can i edit that tablewidget by using mouse and keyboard. am using table->setAttribute(Qt::WA_TransparentForMouseEvents); this logic to use mouse click events on window , by this i can't able to edit the table widget , please help me.

my cpp file

#include "notepad.h"
#include <QMessageBox>
#include <QTableView>
#include <QMouseEvent>

Notepad::Notepad() 
{
	table = new QTableWidget();
	 test() ;
		
	add_action = new QAction(tr("Add cell"), this);
	add_action->setIcon(QIcon("add.jpg"));
    Delete_action = new QAction(tr("Delete cell"), this);
	Delete_action->setIcon(QIcon("delete.jpg"));
    
	connect(Delete_action, SIGNAL(triggered()), this, SLOT(Delete()));
	connect(add_action, SIGNAL(triggered()), this, SLOT(add()));
  	
	//tableItem->setFlags(tableItem->flags() ^ Qt::ItemIsEditable);
	
	centralWidget()->setAttribute(Qt::WA_TransparentForMouseEvents);
	centralWidget()->setAttribute(Qt::WA_MouseTracking,true);
	
	setMouseTracking(true);
	
}
void Notepad::test() 
{	    
	
	QTableWidgetItem* tableItem = new QTableWidgetItem();
	
	table->setRowCount(1);
	table->setColumnCount(3);
	table->setItem(0,0,new QTableWidgetItem());
	table->setItem(0,1,new QTableWidgetItem());
	table->setItem(0,2,new QTableWidgetItem());

	table->setMouseTracking(true);
    table->viewport()->setMouseTracking(true);
    table->installEventFilter(this);
    table->viewport()->installEventFilter(this);

	table->setSelectionBehavior(QAbstractItemView::SelectRows);
    table->setSelectionMode(QAbstractItemView::SingleSelection);
	//table->setSelectionMode( QAbstractItemView::ExtendedSelection );
	//table->setAttribute(Qt::WA_TransparentForMouseEvents);

	

	table->setHorizontalHeaderItem(0, new QTableWidgetItem("combobox"));
	table->setHorizontalHeaderItem(1, new QTableWidgetItem("spinbox"));
	table->setHorizontalHeaderItem(2, new QTableWidgetItem("lineEdit"));
	tableItem->setFlags(tableItem->flags() ^ Qt::ItemIsEditable);
	table->setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding);
	setCentralWidget(table);
	
}

void Notepad::mouseReleaseEvent (QMouseEvent * event )
{	
	QMessageBox* msgBox;
	if(event->button() == Qt::RightButton)
	  {
QMouseEvent *mouseEvent = static_cast<QMouseEvent*> (event);
       QMenu *menu = new QMenu(this);
       menu->addAction(add_action);
       menu->addAction(Delete_action);
       menu->exec(mouseEvent->globalPos());
	   //msgBox->setInformativeText("u pressed right button");   	  	  
	} 
}
void Notepad::add() 
{
					
	table->insertRow( 1);
	
	setCentralWidget(table);
	centralWidget()->setAttribute(Qt::WA_TransparentForMouseEvents);
	setMouseTracking(true);
}
void Notepad::Delete() 
{
	
	table->removeRow(1);

	setCentralWidget(table);
	centralWidget()->setAttribute(Qt::WA_TransparentForMouseEvents);
    setMouseTracking(true);

}

[Jan-Willem]

What happens if you don't set the setAttribute(Qt::WA_TransparentForMouseEvents)?
What problems do you get then?

[srikanth]

@Jan-Willem if i didn't set the table->setAttribute(Qt::WA_TransparentForMouseEvents); this , am able to edit the tablewidget in a requried cell where i select that cell from table by using mouse but i cant able to do mouse click events .
but if i set this table->setAttribute(Qt::WA_TransparentForMouseEvents); logic am able to perform clicking event but not able to edit or select a particular cell in table widget. please help me to get out from this.

[Jan-Willem]

Since you want to add or delete a cell in your table, it seems to me you should do this through a context menu of the QTableWidget and not through the mainwindow. Then you also don't have to meddle with setAttribute(Qt::WA_TransparentForMouseEvents).

[srikanth]

@Jan-Willem Great! It's work fine! Thank you very much. Can't believe that there is people who spend their time for such noob as me. Thank you again

[Jan-Willem]

Glad it works. So this part is solved then.