Display contents of vector in dialog widget when dialog is executed

Steven

I think this is something obvious but i can't find the right search query on google.

I got a std::vector which gets passed to a dialog and should be displayed in a glwidget when the dialog is shown.

//this calls the dialog and copies my vector into the dialog

void PasstukDialog::on_InsertFlat_pushButton_clicked()
{
 FlatInserterDialog FlatInserterDialogInstance;
FlatInserterDialogInstance.resize(QApplication::desktop()->width(),QApplication::desktop()->height()/1.5);
    FlatInserterDialogInstance.CopyMvar(Psstk_MultiVariabel);
    FlatInserterDialogInstance .exec();
}

Now when I make a pushbutton in the dialog and make it call the display()

void FlatInserterDialog::Display()
{//copies content to the glwidget which paints it on the screen
    ui->FI3DGlWidget->StdClass_CopyPointers(FlatInserter_MultiVariabel);
}

function it displays the contents of the vector in the glwidget(which is in the dialog)

but i would like to load it when the dialog is shown without the user having to push a button first

What seems to happen though is the constructor of the dialog is executed first.
Then the vector is copied.
Then the dialog gets displayed.

So when i try something like

FlatInserterDialogInstance.Display();

The dialog isnt shown yet .

I would need a signal when the dialog is loaded to display the content of the vector automatically. but there is only a close signal.

mrjj

Hi and welcome
Even I read you post a few times, im not 100% sure what the real problem
is as you could setup all u need before calling exec().
So I must be missing something.

But you seem to want to know when dialog is shown and
that you can know with
http://doc.qt.io/qt-5.5/QWidget.html#showEvent
hope it helps.

Steven

thanks a bunch

added in the .h

    void showEvent(QShowEvent * event);

added in the .cpp

void FlatInserterDialog::showEvent(QShowEvent * event){
Display();
}

It works

mrjj

super :)