Need Help: "Dialog does not name a type" Error

hadifyassin

Re: [SOLVED]Need Help: Error " 'CLASS' does not name a type"
First of all, I understand that this question has already been asked and I did understand the answer by @sierdzio but IDK how to fix it. What other way to open windows when button is pressed? And the site told me to create a new post.
I also know this looks long but that's only because I've made it as readable as I can.
I have a program in which a push button in a window opens a second window. The second window has a 'back' button which opens the first window.
But in the second window I'm getting the error.
NOTE: I'm only pasting part of the code so as to make it readable.
Dialog.h(first window)

#include <QDialog>
#include "calculator.h"
#include "imp.h"
#include "perc.h"

//standard codes that is automatically added on creating new dialog window in Qt

private slots:
void on_pushButton_clicked();

void on_pushButton_9_clicked();

void on_pushButton_8_clicked();

void on_pushButton_2_clicked();

void on_pushButton_3_clicked();

private:
Ui::Dialog *ui;
//all the windows that will open from this window
calculator *calc;
Imp *pa;
Perc *per;

imp.h(second window)

#include <QDialog>
#include "dialog.h"

//standard codes that is automatically added on creating new dialog window in Qt

private slots:
void on_pushButton_clicked();

void on_pushButton_2_clicked();

private:
Ui::Imp *ui;
Dialog *secdialog;

dialog.cpp(first window)
#include "dialog.h"
#include "ui_dialog.h"
#include "mainwindow.h"

//all the usual error-free(I think) code

void Dialog::on_pushButton_2_clicked()
{
hide();
pa=new Imp(this);
pa->show();
}

imp.cpp(second window)

#include "imp.h"
#include "ui_imp.h"
#include<QTextStream>
#include<QFile>
#include<QFileDialog>

//all the usual error-free(I think) code

void Imp::on_pushButton_2_clicked()
{
hide();
secdialog=new Dialog(this);
secdialog->show();
}

The error is in imp.h(2nd window) this line: Dialog *secdialog;
The error says "Dialog does not name a type".
Also note that dialog is not the main window but a window that opens many other windows when push button is pressed.

PLEASE HELP ME WITH THIS AND THANKS IN ADVANCE.

mrjj

Hi and welcome

The error says "Dialog does not name a type".

Which means its missing its .h file.
so in imp.ccp you must also have
#include "dialog.h"
So it know the custom type Dialog.

like this test project
https://www.dropbox.com/sh/cnvtmg831zvuex5/AADWKcdHF7K1qJKUE1a7atAMa?dl=0

hadifyassin

@mrjj THANKS A MILLION!!! REAL LIFESAVER!
BTW (small doubt): The error was in imp.h but I did include "dialog" in imp.h. The program worked when I removed those lines from the header and placed them in imp.cpp but I am confused as to why the previous configuration doesn't give the same result. Pls Clarify this as well.
Thanks again!

mrjj

Hi
:)

The program worked when I removed those lines from the header and placed them in imp.cpp

That is a bid odd as it should have complained again.
Did you Clean All - Rebuild all to really check?

hadifyassin

Yes, I did. And it works! IDK what's supposed to happen but this really works.