How to Add column names to QTableWidget present in QDialog?

[Piyush]

Hi,

I am unable to add new column names to QTableWidget. I am using setHorizontalHeaderLabels function still unable to add names. Here is the snippet:

def Dialog(self):
     table = self.MyTable(Big21,3,1)
     table.show()
     # this prevents the garbage collector
                 # from deleting the new table
     self.table = table
         
def MyTable(self,data,*args):
     QTableWidget.__init__(self)
     self.data = data
     columns = ['A','B']
     tableWidget = QTableWidget()
     tableWidget.setHorizontalHeaderLabels(columns)
     tableWidget.setRowCount(len(data))
     tableWidget.setColumnCount(len(data.columns))
     for i in range (0,len(data)):
         for j in range (0,len(data.columns)):
             item1 = str(data.iloc[i,j])
             tableWidget.setItem(i, j,  QTableWidgetItem(item1))
     return tableWidget

[mrjj]

HI
you have to increase col count
tableWidget.setColumnCount
to allow for one more :)

https://wiki.qt.io/How_to_Use_QTableWidget

[Piyush]

@mrjj Hi,
Actually the code works if I move the line tableWidget.setHorizontalHeaderLabels(columns) after assigning columncount.

[mrjj]

@Piyush
Hi :)
Well setHorizontalHeaderLabels also uses the col count and it must be correct.

[qwasder85]

You can set header contents for existing columns via the "setHeaderData()" of your table's model, eg.:

p_table->model()->setHeaderData( column_index, Qt::Horizontal, "Hello", Qt::DisplayRole );