[solved] problems with qstringlist

spode

@
QList<Nota> Gestore::getAllNotes()
{
QDir dir("C:/CreateANote");
QList<Nota> listaNote;
if(dir.exists())
{
QFile file("C:/CreateANote/listnotes.txt");
if(file.open(QIODevice::Text | QIODevice::ReadOnly))
{
bool done_withItitles = false;
QTextStream streami(&file);
int i = -1;
while(!streami.atEnd())//finchè nn sei a fine documento
{
i++;
done_withItitles = false;
QString parola;
while(!parola.contains("ENDNOTE\n")) //finchè la nota non è finita
{
listaNote.append(Nota());
parola = streami.read(40);
if(parola.contains("TI-"))
{
continue;
}
else if(parola.contains("TE-"))
{
done_withItitles = true;
continue;
}

                if(done_withItitles)
                {
                    listaNote[i].setContenuto(parola);
                }
                else
                {
                    listaNote[i].setTitolo(parola);
                }
            }
        }
    }
}
return listaNote;

}

/*

formato:
TI- [titolo] TE- [testo] ENDNOTE\n

*/

QStringList Gestore::getAllNotes_title() //penso che questo sia inutile perchè potrei fare getTitolo
{
QDir dir("C:/CreateANote");
QStringList listaTitles;
if(dir.exists())
{
QList<Nota> listNote = this->getAllNotes();
for(int i = 0; i <= listNote.count(); i++) //finchè la lista non è finita
{
listaTitles.append(listNote.at(i).getTitolo());
}
}
return listaTitles;
}
@

errors are:
@
debug\moc_gestore.cpp: In member function 'virtual int Gestore::qt_metacall(QMetaObject::Call, int, void**)':
debug\moc_gestore.cpp:75: error: variable 'QStringList _r' has initializer but incomplete type
debug\moc_gestore.cpp:75: error: invalid use of incomplete type 'struct QStringList'
c:\QtSDK\Desktop\Qt\4.7.3\mingw\include/QtCore/qstring.h:94: error: forward declaration of 'struct QStringList'
mingw32-make[1]: *** [debug/moc_gestore.o] Error 1
mingw32-make: *** [debug] Error 2
The process "C:\QtSDK\mingw\bin\mingw32-make.exe" exited with code 2.
@

with that functions i would to pass a qstringlist to qml listview in this way:
@
ListView {
id: list_view1
x: 14
y: 144
width: 332
height: 369
z: 1
spacing: 5
clip: true
smooth: true
delegate: Item {
x: 5
height: 40
Row {
id: row1
spacing: 10
Rectangle {
width: 40
height: 40

                Text {
                    text: titolo
                    anchors.verticalCenter: parent.verticalCenter
                    font.bold: true
                }

                MouseArea {
                    anchors.fill: parent;
                    onClicked: gestore.visualizzaNotaAt(index)
                }
            }

            Rectangle { id: line; width: 300; x: 10; height: 1; smooth: true }
        }
    }
    model: gestore.getAllNotes_title();
}

@

p.s.: that functions are declared as q_invokable. i have already added q_obect macro.

lgeyer

Did you include QtCore/QStringList?

dmcr

I imagine you have already qmlRegisterType<Gestore>.....
Did you try the setContextProperty which is quite useful is many case?

vsorokin

@include <QStringList>@

koahnig

[quote author="spode" date="1315473545"]@
for(int i = 0; i <= listNote.count(); i++) //finchè la lista non è finita
{
listaTitles.append(listNote.at(i).getTitolo());
}
@ [/quote]

Not an answer to your original post, but this part will crash in run time. You need change to"i < listNote.count()"
@
for(int i = 0; i < listNote.count(); i++) //finchè la lista non è finita
{
listaTitles.append(listNote.at(i).getTitolo());
}
@

spode

so i changed the code as koahing said and included QStringList. the error is still there... =(

Fomand

You have somewhere "class QStringList;". It usually reside in "...h" file, but could reside anywhere.

It is "forward declaration". "#include <QStringList>" provides complete declaration.

"class QStringList;" makes your compilation pass, but it results in incomplete class declaration without "#include <QStringList>".

Option 1. Find "class QStringList;" and replace it with "#include <QStringList>".
Option 2. Find "class QStringList;" in ...h file and put "#include <QStringList>" in corresponding ...cpp file.

Before the row with the error there is another row with "in file..." which tells you in which ...cpp file you should add "#include <QStringList>".

spode

this is the complete compile output of the app. i did not understand....
@
Running build steps for project createANote...
Configuration unchanged, skipping qmake step.
Starting: "C:\QtSDK\mingw\bin\mingw32-make.exe"
C:/QtSDK/mingw/bin/mingw32-make -f Makefile.Debug
mingw32-make[1]: Entering directory C:/Users/7-Spode/Documents/Progetti/QT/mobile/createANote-build-desktop-Qt_4_7_3_for_Desktop_-_MinGW_4_4__Qt_SDK__Debug' g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_DLL -DQT_DECLARATIVE_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_HAVE_MMX -DQT_HAVE_3DNOW -DQT_HAVE_SSE -DQT_HAVE_MMXEXT -DQT_HAVE_SSE2 -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAIN -I"c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtCore" -I"c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtGui" -I"c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\QtDeclarative" -I"c:\QtSDK\Desktop\Qt\4.7.3\mingw\include" -I"..\createANote\qmlapplicationviewer" -I"c:\QtSDK\Desktop\Qt\4.7.3\mingw\include\ActiveQt" -I"debug" -I"..\createANote" -I"." -I"c:\QtSDK\Desktop\Qt\4.7.3\mingw\mkspecs\win32-g++" -o debug\moc_gestore.o debug\moc_gestore.cpp debug\moc_gestore.cpp: In member function 'virtual int Gestore::qt_metacall(QMetaObject::Call, int, void**)': debug\moc_gestore.cpp:75: error: variable 'QStringList _r' has initializer but incomplete type debug\moc_gestore.cpp:75: error: invalid use of incomplete type 'struct QStringList' c:\QtSDK\Desktop\Qt\4.7.3\mingw\include/QtCore/qstring.h:94: error: forward declaration of 'struct QStringList' mingw32-make[1]: Leaving directory C:/Users/7-Spode/Documents/Progetti/QT/mobile/createANote-build-desktop-Qt_4_7_3_for_Desktop_-_MinGW_4_4__Qt_SDK__Debug'
mingw32-make[1]: *** [debug/moc_gestore.o] Error 1
mingw32-make: *** [debug] Error 2
The process "C:\QtSDK\mingw\bin\mingw32-make.exe" exited with code 2.
Error while building project createANote (target: Desktop)
When executing build step 'Make'
@

koahnig

Formand assumes that you have "tricked" the compiler somewhere in your code.
You can simply declare class <classname> when you do not want to include the complete header file for some reason. E.g. this is handy when class A is is used in a parameter list of class B and the opposite.
For example you can do:
@
class A;

class B
{
public:
.
.
.
void foo ( A & a );
.
.
.

};

class A
{
public:
.
.
.
void foo2 ( B & b );
.
.
.

};
@

You cannot declare completely class A before class B and vice versa. The single statement:
@
class A;
@
tells the compiler that "A" is a class, but you have to define it lateron. If you include this header file into the appropriate cpp-file and line out the appropriate methods in there, it should not give a compilation error.

Formand assumes now that this has happened somewhere by accident in your own code for QStringList .
The only way for you would be to check all source and header files involved to check for such an occurance of "class QStringList;" and substitute it with "#include<QStringList>".

goetz

Try to clean and completely rebuild your project. This often helps to "solve" such problems. If the error remains, please provide us with a short, complete, compilable example.