Selecting QComboBox in QTableWidget

Question

One cell in each row of a QTableWidget contains a combobox

for (each row in table ... ) {
   QComboBox* combo = new QComboBox();      
   table->setCellWidget         


        

Answer 1

No need for the signal mapper... When the combobox is created you can simply add two custom properties to it:

combo->setProperty("row", (int) nRow);
combo->setProperty("col", (int) nCol);

In the handler function you can get a pointer back to the sender of the signal (your combobox).

Now by asking for the properties you can have your row/col back:

int nRow = sender()->property("row").toInt();
int nCol = sender()->property("col").toInt();