stackedwidget for different class which they have their own .cpp , .h, and .ui

marlenet15

I have created different classes(.cpp, .h, .ui) and I wish to combine all of their .ui's in a stackedwidget. I created an extra class specifically to add the widgets into the stackedwidget. For the stackedwidget cpp I have used

QStackedWidget *stackedWidget = new QStackedWidget;
stackedWidget->addWidget(page1)

page1 would be the widget I create for one cpp/ui file and on the stackedwidget cpp I made sure to include the .h file for page_1. On the page_1 .cpp (I made it into QDialog) and wrote the following:

QWidget *page1 = new QWidget;
.
.
QVBoxLayout *finalLayout = new QVBoxLayout(page1);

However, the stackedwidget cpp does not recognize the QWidget page1.

SGaist

Hi,

Can you show the complete code where you setup your QStackedWidget ? Where do you declare/instantiate page1 ?

marlenet15

Page_1.cpp has

QWidget *page1 = new QWidget;
ui->setupUi(this);
ui->page1Layout = new QVBoxLayout(page1);

Page_stackedWidget.cpp has the '#include Page_1.h'
ui->setupUi(this);

stackedWidget = new QStackedWidget;
stackedWidget->addWidget(page1);

QVBoxLayout *vLayout = new QVBoxLayout;
vLayout->addWidget(stackedWidget);

setLayout(vLayout);

SGaist

page1 is a local variable used in Page_1.cpp, you can't access it like that in Page_stackedWidget.cpp (and don't try or you are going to write pretty ugly code).

Shouldn't you be doing something like:

Page_1 *page_1 = new Page_1;
stackedWidget->addWidget(page_1);

?

marlenet15

The thing is there were going to be multiple pages and I wanted to stack the widgets in a different file. I was able to achieve that with Page_stackedWidget.ui. However, I would like it so when I press a button that is in page 1 it takes me to page 2. This is what I have for Page_stackedWidget.cpp

#include "dialog.h"
#include "ui_dialog.h"

Page_stackedWidget::Page_stackedWidget(QWidget *parent) :
QDialog(parent),
ui(new Ui::Dialog)
}
ui->setupUi(this);
connect(_signin->nextButton, SIGNAL(clicked()),this,SLOT(goToPage2())); 
}

void Dialog::goToPage2()
{
ui->stackedWidget->setCurrentIndex(1);
}

However, the "nextButton" I created on the .ui file for Page1. I have looked for forums and i have found some similar to my problem but the difference is that their button is created on this file. http://stackoverflow.com/questions/9694474/manipulating-qt-ui-with-different-source-files.

mrjj

Hi
If I understand you correctly,
you can maybe use the promote feature.

Say you have
UI A,B,C
B and C contains widgets like buttons etc.

on A you put a stacked widget
and on page 1 it has all of B, and on page 2, it has all of C
and they still live in their own UI files. ?

That you can do via promote. In short you place a QWidget in the stacked paged and it will be replaced
by all widget from an UI file. When you run the program.
Note: select QWidget as parent, not dialog when you create B,C.

Please see
https://forum.qt.io/topic/59373/solved-recommended-approach-for-inline-modal/13

If its not what you mean, then sorry :)

marlenet15

@mrjj I did put a widget on the stackedWidget. Even though it is a QDialog, I created a widget inside of it. I was able to call the files and add them into the stackwidget. My question now is how do I call a qpushbutton created from Page1?

mrjj

@marlenet15
well , say the place holder widget is called Wid2, (the one you promoted)
then you can access any widget using the normal

ui->Wid2->SomeButton

its being created in the ui_xx file for the UI that contains the promoted widgets.

SGaist

Each widget should be self-contained so what exactly do you want to do with that button from another widget in your stack ?

marlenet15

I want to press that button to go the next page that is in the stack

SGaist

In that case and from a design point of view, does it really belong to a widget inside the stack ?

marlenet15

Yes it does.

SGaist

Then add a signal to that widget that will forward the button clicked signal. Something like nextPageRequested. That will be cleaner and easier to understand when you read the code.

marlenet15

I know but how am I supposed to access that widget when it is in another class?

connect(Page1->nextButton, SIGNAL(clicked()),this,SLOT(goToPage2()));

Where Page1 is the widget that contains the button "nextButton" and when you press it will go to Page2

SGaist

That's what I wrote: you don't access the button, you only connect Page1.

Are you trying to re-implement QWizard ?

marlenet15

Yes but I do not want to use QWizard since I don't want it in that style. The only similarity is that I can go from one page to another.