[solved] New to Qt my test wont run

HopkDe

I have loaded an example from a book
C== GUI Programming with QT4 second edition

put it in qt-5.3\Examples as spreadsheet

click on spreadsheet.pro to run it and build run.

it says a file cell.h is not found but it is there in that directory

What am I doing wrong

dasun

First of all you don't have to put your project file in to Examples directory.
Can you please give us a like to your example project?

HopkDe

pro file is
@
TEMPLATE = app
HEADERS = cell.h
finddialog.h
gotocelldialog.h
mainwindow.h
sortdialog.h
spreadsheet.h
SOURCES = cell.cpp
finddialog.cpp
gotocelldialog.cpp
main.cpp
mainwindow.cpp
sortdialog.cpp
spreadsheet.cpp
FORMS = gotocelldialog.ui
sortdialog.ui
RESOURCES = spreadsheet.qrc
@
cell.h file is
@
#ifndef CELL_H
#define CELL_H

#include <QTableWidgetItem>

class Cell : public QTableWidgetItem
{
public:
Cell();

QTableWidgetItem *clone() const;
void setData(int role, const QVariant &value);
QVariant data(int role) const;
void setFormula(const QString &formula);
QString formula() const;
void setDirty();

private:
QVariant value() const;
QVariant eval[removed]const QString &str, int &pos) const;
QVariant evalTerm(const QString &str, int &pos) const;
QVariant evalFactor(const QString &str, int &pos) const;

mutable QVariant cachedValue;
mutable bool cacheIsDirty;

};

#endif
@

line in error is

@
#include <QTableWidgetItem>
@
I think

[edit: Added missing coding tags @ SGaist]

SGaist

Hi and welcome to devnet,

Since you are using a Qt 4 example with Qt 5 you are missing QT += widgets in your pro file.

HopkDe

is there an easy way to convert Qt4 code to Qt5

as your answer allowed me to pass the previous error and now have pages of problems

or is ther a list of things that changed ?

I would have thought Qt5 would have added features but not rendered Qt4 code inoperable.

SGaist

Search in the documentation for "C++ API changes"

The biggest "visible" change in Qt 5 is the widgets module. The port from Qt 4 to Qt 5 is generally simple.

What errors are you getting ?

HopkDe

21:17:08: Running steps for project spreadsheet...
21:17:08: Configuration unchanged, skipping qmake step.
21:17:08: Starting: "C:\Qt\Tools\mingw482_32\bin\mingw32-make.exe"
C:/Qt/Tools/mingw482_32/bin/mingw32-make -f Makefile.Debug
mingw32-make[1]: Entering directory 'D:/QAHN/OPERA/Qt-4/qt-book-examples/qt-book/chap04/build-spreadsheet-Desktop_Qt_5_3_MinGW_32bit-Debug'
g++ -c -pipe -fno-keep-inline-dllexport -g -frtti -Wall -Wextra -fexceptions -mthreads -DUNICODE -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_NEEDS_QMAIN -I..\spreadsheet -I"C:\Qt\5.3\mingw482_32\include" -I"C:\Qt\5.3\mingw482_32\include\QtWidgets" -I"C:\Qt\5.3\mingw482_32\include\QtGui" -I"C:\Qt\5.3\mingw482_32\include\QtCore" -I"debug" -I"." -I"." -I"C:\Qt\5.3\mingw482_32\mkspecs\win32-g++" -o debug\finddialog.o ..\spreadsheet\finddialog.cpp
..\spreadsheet\finddialog.cpp: In constructor 'FindDialog::FindDialog(QWidget*)':
..\spreadsheet\finddialog.cpp:8:41: error: invalid use of incomplete type 'class QLabel'
label = new QLabel(tr("Find &what:"));
^
In file included from ..\spreadsheet\finddialog.cpp:3:0:
..\spreadsheet\finddialog.h:7:7: error: forward declaration of 'class QLabel'
class QLabel;
^
..\spreadsheet\finddialog.cpp:9:20: error: invalid use of incomplete type 'class QLineEdit'
lineEdit = new QLineEdit;
^
In file included from ..\spreadsheet\finddialog.cpp:3:0:
..\spreadsheet\finddialog.h:8:7: error: forward declaration of 'class QLineEdit'
class QLineEdit;
^
..\spreadsheet\finddialog.cpp:10:10: error: invalid use of incomplete type 'class QLabel'
label->setBuddy(lineEdit);
^
In file included from ..\spreadsheet\finddialog.cpp:3:0:
..\spreadsheet\finddialog.h:7:7: error: forward declaration of 'class QLabel'
class QLabel;
^
..\spreadsheet\finddialog.cpp:12:51: error: invalid use of incomplete type 'class QCheckBox'
caseCheckBox = new QCheckBox(tr("Match &case"));
^
In file included from ..\spreadsheet\finddialog.cpp:3:0:
..\spreadsheet\finddialog.h:6:7: error: forward declaration of 'class QCheckBox'
class QCheckBox;
^
..\spreadsheet\finddialog.cpp:13:60: error: invalid use of incomplete type 'class QCheckBox'
backwardCheckBox = new QCheckBox(tr("Search &backward"));
^
In file included from ..\spreadsheet\finddialog.cpp:3:0:
..\spreadsheet\finddialog.h:6:7: error: forward declaration of 'class QCheckBox'
class QCheckBox;
^
..\spreadsheet\finddialog.cpp:15:45: error: invalid use of incomplete type 'class QPushButton'
findButton = new QPushButton(tr("&Find"));
^
In file included from C:\Qt\5.3\mingw482_32\include\QtWidgets/QDialog:1:0,
from ..\spreadsheet\finddialog.h:4,
from ..\spreadsheet\finddialog.cpp:3:
C:\Qt\5.3\mingw482_32\include\QtWidgets/qdialog.h:50:7: error: forward declaration of 'class QPushButton'
class QPushButton;
^
..\spreadsheet\finddialog.cpp:16:15: error: invalid use of incomplete type 'class QPushButton'
findButton->setDefault(true);
^
In file included from C:\Qt\5.3\mingw482_32\include\QtWidgets/QDialog:1:0,
from ..\spreadsheet\finddialog.h:4,
from ..\spreadsheet\finddialog.cpp:3:
C:\Qt\5.3\mingw482_32\include\QtWidgets/qdialog.h:50:7: error: forward declaration of 'class QPushButton'
class QPushButton;
^
..\spreadsheet\finddialog.cpp:17:15: error: invalid use of incomplete type 'class QPushButton'
findButton->setEnabled(false);
^
In file included from C:\Qt\5.3\mingw482_32\include\QtWidgets/QDialog:1:0,
from ..\spreadsheet\finddialog.h:4,
from ..\spreadsheet\finddialog.cpp:3:
C:\Qt\5.3\mingw482_32\include\QtWidgets/qdialog.h:50:7: error: forward declaration of 'class QPushButton'
class QPushButton;
^
..\spreadsheet\finddialog.cpp:19:46: error: invalid use of incomplete type 'class QPushButton'
closeButton = new QPushButton(tr("Close"));
^
In file included from C:\Qt\5.3\mingw482_32\include\QtWidgets/QDialog:1:0,
from ..\spreadsheet\finddialog.h:4,
from ..\spreadsheet\finddialog.cpp:3:
C:\Qt\5.3\mingw482_32\include\QtWidgets/qdialog.h:50:7: error: forward declaration of 'class QPushButton'
class QPushButton;
^
..\spreadsheet\finddialog.cpp:22:58: error: no matching function for call to 'FindDialog::connect(QLineEdit*&, const char*, FindDialog* const, const char*)'
this, SLOT(enableFindButton(const QString &)));
^
..\spreadsheet\finddialog.cpp:22:58: note: candidates are:
In file included from C:\Qt\5.3\mingw482_32\include/QtCore/qabstractanimation.h:45:0,
from C:\Qt\5.3\mingw482_32\include/QtCore/QtCore:4,
from C:\Qt\5.3\mingw482_32\include/QtGui/QtGuiDepends:2,
from C:\Qt\5.3\mingw482_32\include\QtGui/QtGui:3,
from ..\spreadsheet\finddialog.cpp:1:

SGaist

Do you have somewhere a

@#include <QtGui>@

If so add

@#include <QtWidgets>@

These are module includes and should only be used for rapid prototyping or simple examples.

Otherwise always only include classes that you are currently using.

HopkDe

That seems to have fixed it it now runs.

One more question how do I make anexecutable .exe file so as to just run the application ( on thsi or another computer)

Thanks for your help so far

SGaist

Follow this fine "wiki entry":http://qt-project.org/wiki/Deploy_an_Application_on_Windows for deployment.

Or if you really only want an exe then you will have to compile Qt statically first (there's some licensing concerns with that)

HopkDe

lets not run before I can walk.

Yes all I want is an exe to run my Qt program directly without using Qt-creator

something that goes direct to a run of the program. (on my computer) or perhaps also on my laptop.

my test program is now running and started to modify it, so all is going well

SGaist

So your current problem is solved :)

Then please update the thread title prepending [solved] so other forum users may know a solution has been found :)

HopkDe

OK but how do you do that I only see a place to post a reply

HopkDe

OK done solved added