getting to the buttons inside a QGridLayout

[mr_kazoodle]

Hi,

Currently, I'm making a little calculator program to train my coding skills. I use the QGridLayout because it helps me creating the layout fast.
My problem is: I don't know how to connect the buttons in the grid because I don't know how to 'access' them.

I started of with the code from this tutorial, look for QGridLayout.

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Added after 4 minutes:

EDIT:
(The solution I am trying now is to first make an array of buttons and then use those buttons in the grid)
This code compiles but doesn't run. If I can find the mistake in this piece of code I think I don't have any problems anymore.

char *knopLabels[20] = { "7", "8", "9", "/", "sqrt",
                             "4", "5", "6", "*", "x^y",
                             "1", "2", "3", "-", "n!",
                             "0", ",", "+/-", "+", "="};
    int labelIndex = 0;
    QPushButton *knop [20];
    for (int i=0; i<4; i++) {
        for (int j=0; j<5; j++){
        knop[5*i+j]->setText(knopLabels[labelIndex]);
        knop[5*i+j]->setMaximumWidth(50);
        myGrid->addWidget(knop[5*i+j], i, j);
        labelIndex++;
        };

char *knopLabels[20] = { "7", "8", "9", "/", "sqrt",
                             "4", "5", "6", "*", "x^y",
                             "1", "2", "3", "-", "n!",
                             "0", ",", "+/-", "+", "="};
    int labelIndex = 0;
    QPushButton *knop [20];
    for (int i=0; i<4; i++) {
        for (int j=0; j<5; j++){
        knop[5*i+j]->setText(knopLabels[labelIndex]);
        knop[5*i+j]->setMaximumWidth(50);
        myGrid->addWidget(knop[5*i+j], i, j);
        labelIndex++;
        };

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---

Added after 4 minutes:

fixed it:

char *knopLabels[20] = { "7", "8", "9", "/", "sqrt",
                             "4", "5", "6", "*", "x^y",
                             "1", "2", "3", "-", "n!",
                             "0", ",", "+/-", "+", "="};
    int labelIndex = 0;
    QPushButton *knop[20];
    for (int i=0; i<4; i++) {
        for (int j=0; j<5; j++){
        knop[5*i+j] = new QPushButton(knopLabels[labelIndex]);
        knop[5*i+j]->setMaximumWidth(50);
        myGrid->addWidget(knop[5*i+j], i, j);
        labelIndex++;
        };

char *knopLabels[20] = { "7", "8", "9", "/", "sqrt",
                             "4", "5", "6", "*", "x^y",
                             "1", "2", "3", "-", "n!",
                             "0", ",", "+/-", "+", "="};
    int labelIndex = 0;
    QPushButton *knop[20];
    for (int i=0; i<4; i++) {
        for (int j=0; j<5; j++){
        knop[5*i+j] = new QPushButton(knopLabels[labelIndex]);
        knop[5*i+j]->setMaximumWidth(50);
        myGrid->addWidget(knop[5*i+j], i, j);
        labelIndex++;
        };

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[Lesiok]

Read about QObject::findChild method.

[aamer4yu]

Obviosuly you werent creating the button objects itself !!