QStackwidget Multiple pages Issue[SOLVED]

[mrjj]

@marlenet15
OK?
Pretty strange.

just delete it and make a new .pro file and put this in it
just a default one.

#-------------------------------------------------
#
# Project created by QtCreator 2015-10-18T21:53:24
#
#-------------------------------------------------

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = sevenstacked
TEMPLATE = app


SOURCES += main.cpp\
        mainwindow.cpp

HEADERS  += mainwindow.h

FORMS    += mainwindow.ui

[marlenet15]

@mrjj haha it gave me like 27 errors

[mrjj]

@marlenet15
Ehh. ok.
Not sure what is going on.

Make new default project and then copy mainwindow.cpp/h and mainwindow.ui
to it ?

Anyway, was just a stacked widget with 10 pages and 2 buttons to go forth and back between the pages.

void MainWindow::on_pushButton_11_released() {

  int cur = ui->stackedWidget->currentIndex() + 1;
  ui->stackedWidget->setCurrentIndex(cur);
  ui->label->setText( QString::number(cur) );

}

void MainWindow::on_pushButton_12_released() {
  int cur = ui->stackedWidget->currentIndex() - 1;
  ui->stackedWidget->setCurrentIndex(cur);
  ui->label->setText( QString::number(cur) );

}

[marlenet15]

@mrjj Ok so yes it does work that way. Do you have any idea why wouldn't work through the code I wrote?

[mrjj]

@marlenet15
:) super
Well, I cant see how you create _page1 - _page7
you must have XX * _page1 = new XX; somewhere.
and it might crash if you use setCurrentWidget for deallocated
object or something like that.

Also using setCurrentWidget, that widget must already be inserted into stacked.

Most of the time I just insert pages in UI as it is far easier.
You can even add dynamic also, if needed.

[marlenet15]

@mrjj wouldn't it be page7 that could be deallocated? I have been looking at my code like 50 times and I still can't find the error. I set the pages on the UI and page7 still doesn't work :(

[marlenet15]

@marlenet15 Ok So I commented out 90% of the code and page7 works! So now I have to uncomment section by section to figure out what is making page 7 crash.

[mrjj]

@marlenet15

well its hard to guess when I cant see all code.

Do you do

QWidget *page7 = new QWidget()

when you create them ?
or now you insert them into the stacked in the UI ?

[marlenet15]

@mrjj I inserted it now on the UI. I figured it out! I had another class where I had an array of QStrings which contains the titles for each page. I had an array of size 6 because I had only focused on the 6 pages I created. However, when I created the 7th page it would crash because the index 6 didn't exist since the array goes from 0-5. Thank you so much for your help!!!

[mrjj]

@marlenet15
oh good found :)
Nasty one.