QObject::connect: No such slot QWidget::makeyourbox() in occQt.cpp:324

Question

I am new to here.

The ui run well ,but when I click 'okbtn' ...

QObject::connect: No such slot QWidget::makeyourbox() in occQt.cpp:324

And when I click 'cancelbtn', it runs.

Thanks for any responses, Eason

code:

void occQt::about2()  //UI
{
    QWidget* pWidget = new QWidget;
    QLabel* longlabel = new QLabel(tr("long"));
    QLabel* widthlabel = new QLabel(tr("width"));
    QLabel* highlabel = new QLabel(tr("high"));
    longlineedit = new QLineEdit;
    widthlineedit = new QLineEdit;
    highlineedit = new QLineEdit;
    QPushButton* okbtn = new QPushButton(tr("ok"));
    QPushButton* cancelbtn = new QPushButton(tr("cancel"));
    QGridLayout* gridlayout = new QGridLayout;
    QVBoxLayout* dlglayout = new QVBoxLayout;
    QHBoxLayout* btnlayout = new QHBoxLayout;
    gridlayout->addWidget(longlabel, 0, 0, 1, 1);
    gridlayout->addWidget(widthlabel, 1, 0, 1, 1);
    gridlayout->addWidget(highlabel, 2, 0, 1, 1);
    gridlayout->addWidget(longlineedit, 0, 1, 1, 3);
    gridlayout->addWidget(widthlineedit, 1, 1, 1, 3);
    gridlayout->addWidget(highlineedit, 2, 1, 1, 3);
    longlineedit->setText("5");
    widthlineedit->setText("5");
    highlineedit->setText("5");
    btnlayout->setSpacing(60);
    btnlayout->addWidget(okbtn);
    btnlayout->addWidget(cancelbtn);
    //pWidget->setLayout(gridlayout);
    dlglayout->setMargin(50);
    dlglayout->addLayout(gridlayout);
    dlglayout->addStretch(40);
    dlglayout->addLayout(btnlayout);
    pWidget->setLayout(dlglayout);
    pWidget->setWindowTitle(tr("Make a Box by custom."));
    pWidget->show();
    connect(okbtn, SIGNAL(clicked()), pWidget, SLOT(makeyourbox()));
    //QObject::connect(okbtn, SIGNAL(clicked()), pWidget, SLOT(close()));
    connect(cancelbtn, SIGNAL(clicked()), pWidget, SLOT(close()));
}

void occQt::makeyourbox()
{
    QString string_a = longlineedit->text();
    eason_a = string_a.toInt();
    QString string_b = widthlineedit->text();
    eason_b = string_b.toInt();
    QString string_c = highlineedit->text();
    eason_c = string_c.toInt();
    TopoDS_Shape aTopoBox = BRepPrimAPI_MakeBox(eason_a, eason_b, eason_c).Shape();
    Handle_AIS_Shape anAisBox = new AIS_Shape(aTopoBox);
    anAisBox->SetColor(Quantity_NOC_AZURE);
    mContext->Display(anAisBox);
}

When I run the pWidget, click cancelbtn, ui close. Click okbtn,do nothing..

http://stackoverflow.com/questions/37385409/how-to-add-a-slot-to-a-qwidget/37385551?noredirect=1#comment62281646_37385551 — eason, May 26 '16 at 05:23

score 1 · Accepted Answer · answered May 18 '16 at 10:08

1

pWidget is a generic QWidget. It does not contain method/slot makeyourbox(). Your code is faulty.

answered May 18 '16 at 10:08

dudeking

764
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Oh... Thank you . I think I get the way. – eason May 20 '16 at 07:49

score 0 · Answer 2 · answered May 17 '16 at 08:34

0

you should add makeyourbox() method to the subclass of QWidget, and mark it as slot

answered May 17 '16 at 08:34

Tiko

485
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Thanks for your responses, but I don't think it should add... When adding it , I get the same result.. – eason May 17 '16 at 08:51
My English is poor so I need more time to respond to you,sorry. – eason May 17 '16 at 08:55
if occQt is subclass of QWidget, you should create an instance of it. This is not working beacause QWidget has no slot with name makeyourbox(). – Tiko May 17 '16 at 10:33

score 0 · Answer 3 · answered May 17 '16 at 08:51

0

Double check makeyourbox is defined to be a slot within that class.

answered May 17 '16 at 08:51

4pie0

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QObject::connect: No such slot QWidget::makeyourbox() in occQt.cpp:324

3 Answers3