QTableWidget - Using top left corner cell

[norobro]

"QTableWidget NW corner header item?" at the bottom of this page under Similar Threads has some downloadable code in post #4.

HTH

[SteveH]

Hi,

Many thanks to all that replied and helped with this problem, just knowing that it is solvable helps a lot - Since the program I am translating from BB6 uses over a dozen instances of QTableWidget I guess it would be best to lash up new class by subbing QTableWidget and making it act like a BB6 StringGrid - I'll post a copy here later for other guys leaving the dark ages of BB6.

SteveH

[SteveH]

Hi All,

After much playing around I think I've got my solution. I'm using QTableWidget without the headers and using a QLabel in row/col zeros to simulate my own header. The following subroutine allows me to set a text string in any cell and insets a QTableWidgetItem if none has already set. It still needs a few frills adding for extra options but shows how to access the widget to set it's color and text.

void MainWindow::setTableWidgetString(QTableWidget *tW, int row, int col, QString str)
{
QTableWidgetItem *dispItem ;
 
if((dispItem = tW->item(row, col)) == 0) {            // if no item set then insert new one
 if((row == 0) || (col == 0)) {
  QLabel *L = new QLabel() ;                                      // new header
  L->setAlignment(Qt::AlignVCenter | Qt::AlignHCenter);
  L->setText(str) ;
  L->setFrameShape(QFrame::StyledPanel);
  L->setAutoFillBackground(true);
  L->setBackgroundRole(QPalette::Window);
  QPalette P ;
  P.setBrush(QPalette::Active, QPalette::Window, QBrush(Qt::lightGray));
  L->setPalette(P) ;
 
  tW->setCellWidget(row, col, L) ;
  }
 else {
  QTableWidgetItem *newItem = new QTableWidgetItem(str) ;         // new cell
  tW->setItem(row, col, newItem) ;
  newItem->setTextAlignment(Qt::AlignHCenter | Qt::AlignVCenter) ;
  }
 }
 
else {                                                // existing cell, update contents
 if((row == 0) || (col == 0)) {
  QLabel *L = qobject_cast<QLabel *> (tW->cellWidget(row, col)) ; // header
  L->setText(str);
  }
 else
  dispItem->setText(str) ;                                        // cell
 }
 
}

void MainWindow::setTableWidgetString(QTableWidget *tW, int row, int col, QString str)
{
QTableWidgetItem *dispItem ;

if((dispItem = tW->item(row, col)) == 0) {            // if no item set then insert new one
 if((row == 0) || (col == 0)) {
  QLabel *L = new QLabel() ;                                      // new header
  L->setAlignment(Qt::AlignVCenter | Qt::AlignHCenter);
  L->setText(str) ;
  L->setFrameShape(QFrame::StyledPanel);
  L->setAutoFillBackground(true);
  L->setBackgroundRole(QPalette::Window);
  QPalette P ;
  P.setBrush(QPalette::Active, QPalette::Window, QBrush(Qt::lightGray));
  L->setPalette(P) ;

  tW->setCellWidget(row, col, L) ;
  }
 else {
  QTableWidgetItem *newItem = new QTableWidgetItem(str) ;         // new cell
  tW->setItem(row, col, newItem) ;
  newItem->setTextAlignment(Qt::AlignHCenter | Qt::AlignVCenter) ;
  }
 }

else {                                                // existing cell, update contents
 if((row == 0) || (col == 0)) {
  QLabel *L = qobject_cast<QLabel *> (tW->cellWidget(row, col)) ; // header
  L->setText(str);
  }
 else
  dispItem->setText(str) ;                                        // cell
 }

}

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