QTableWidget problem

[wysota]

Resize won't work as layouts override it. Use what I suggested.

[MarkoSan]

well, if I knew what you thought I would not be asking now ... Will go now read docs, thanks for hints and tips, wysota...

[wysota]

I told you the names of fields in Designer. I think I can expect someone with at least two years of experience to locate them there.

[MarkoSan]

Yes, wysota, do not be mad, please, you are right, but I haven't slept whole weekend because of this application. And I do not use designer, since I want to master qt by handcoding and then switch to designer ....

[wysota]

Yes, wysota, do not be mad, please, you are right, but I haven't slept whole weekend because of this application.

So now you see this was not a good idea. A tired man (programmers included) has a very reduced efficiency. A very tired man has no efficiency at all. Go to sleep.

And I do not use designer,

Those same names are available in Qt Assistant.

since I want to master qt by handcoding and then switch to designer ....

Bad idea.

[MarkoSan]

Well, ok, now I've set up all things as they should be. I've subclassed QTableView and QAbstractTableModel. It works fine for now. Just question. I've followed wysota's advice and the method data() return QVariant, which is QString stuffed with the values of all components of my struct. Wysota, did I do it right way or not?

[wysota]

No, I told you to use different roles for different data pieces.

[MarkoSan]

Ok, then back to docs ... But I do not get this roles . I've looked them up in docs, the roles are used for editing, rendering data ... not for data type itself ...

[wysota]

The point is that every row consists of two lines, the upper one will hold merchandize name (solo column) and the lower one will consists of following fields in order:

* price/merchandize unit (eur formatted, including euro sign
* number of merchandize unit (formatted with leading 0)
* price/unit*number of merchandize units (eur formatted, including euro sign)
* at the end there will be total field

I see different pieces of data here, don't you?

[MarkoSan]

I see different pieces of data here, don't you?

So, quote fomr the docs:

Each item in the model has a set of data elements associated with it, each with its own role. The roles are used by the view to indicate to the model which type of data it needs.

So, for this each data from struct I need a whole familiy of this roles (numbers)?!

[wysota]

For each data piece you need one role.

[MarkoSan]

Ok, I am slowly getting somewhere, but in the statement:

m_pShoppingCartView->model()->setData(index, QVariant((m_pShoppingCartView->order()->orders().size()), 1));

m_pShoppingCartView->model()->setData(index, QVariant((m_pShoppingCartView->order()->orders().size()), 1));

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I get following error:

mingw32-make 
mingw32-make -f Makefile.Debug
mingw32-make[1]: Entering directory `C:/Documents and Settings/markofr/workspace/Client'
g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_DLL -DQT_SQL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAIN -I"..\..\..\..\Qt\4.3.4\include\QtCore" -I"..\..\..\..\Qt\4.3.4\include\QtCore" -I"..\..\..\..\Qt\4.3.4\include\QtGui" -I"..\..\..\..\Qt\4.3.4\include\QtGui" -I"..\..\..\..\Qt\4.3.4\include\QtSql" -I"..\..\..\..\Qt\4.3.4\include\QtSql" -I"..\..\..\..\Qt\4.3.4\include" -I"c:\Qt\4.3.4\include\ActiveQt" -I"debug" -I"." -I"..\..\..\..\Qt\4.3.4\mkspecs\win32-g++" -o debug\CMainWindow.o CMainWindow.cpp
g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_DLL -DQT_SQL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAIN -I"..\..\..\..\Qt\4.3.4\include\QtCore" -I"..\..\..\..\Qt\4.3.4\include\QtCore" -I"..\..\..\..\Qt\4.3.4\include\QtGui" -I"..\..\..\..\Qt\4.3.4\include\QtGui" -I"..\..\..\..\Qt\4.3.4\include\QtSql" -I"..\..\..\..\Qt\4.3.4\include\QtSql" -I"..\..\..\..\Qt\4.3.4\include" -I"c:\Qt\4.3.4\include\ActiveQt" -I"debug" -I"." -I"..\..\..\..\Qt\4.3.4\mkspecs\win32-g++" -o debug\COperationWIndow.o COperationWIndow.cpp
../../../../Qt/4.3.4/include/QtCore/../../src/corelib/kernel/qvariant.h: In member function `void COperationWIndow::chooseMerchandize()':
../../../../Qt/4.3.4/include/QtCore/../../src/corelib/kernel/qvariant.h:415: error: `QVariant::QVariant(bool, int)' is private
COperationWIndow.cpp:284: error: within this context
mingw32-make[1]: *** [debug/COperationWIndow.o] Error 1
mingw32-make[1]: Leaving directory `C:/Documents and Settings/markofr/workspace/Client'
mingw32-make: *** [debug] Error 2

mingw32-make 
mingw32-make -f Makefile.Debug
mingw32-make[1]: Entering directory `C:/Documents and Settings/markofr/workspace/Client'
g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_DLL -DQT_SQL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAIN -I"..\..\..\..\Qt\4.3.4\include\QtCore" -I"..\..\..\..\Qt\4.3.4\include\QtCore" -I"..\..\..\..\Qt\4.3.4\include\QtGui" -I"..\..\..\..\Qt\4.3.4\include\QtGui" -I"..\..\..\..\Qt\4.3.4\include\QtSql" -I"..\..\..\..\Qt\4.3.4\include\QtSql" -I"..\..\..\..\Qt\4.3.4\include" -I"c:\Qt\4.3.4\include\ActiveQt" -I"debug" -I"." -I"..\..\..\..\Qt\4.3.4\mkspecs\win32-g++" -o debug\CMainWindow.o CMainWindow.cpp
g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_DLL -DQT_SQL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAIN -I"..\..\..\..\Qt\4.3.4\include\QtCore" -I"..\..\..\..\Qt\4.3.4\include\QtCore" -I"..\..\..\..\Qt\4.3.4\include\QtGui" -I"..\..\..\..\Qt\4.3.4\include\QtGui" -I"..\..\..\..\Qt\4.3.4\include\QtSql" -I"..\..\..\..\Qt\4.3.4\include\QtSql" -I"..\..\..\..\Qt\4.3.4\include" -I"c:\Qt\4.3.4\include\ActiveQt" -I"debug" -I"." -I"..\..\..\..\Qt\4.3.4\mkspecs\win32-g++" -o debug\COperationWIndow.o COperationWIndow.cpp
../../../../Qt/4.3.4/include/QtCore/../../src/corelib/kernel/qvariant.h: In member function `void COperationWIndow::chooseMerchandize()':
../../../../Qt/4.3.4/include/QtCore/../../src/corelib/kernel/qvariant.h:415: error: `QVariant::QVariant(bool, int)' is private
COperationWIndow.cpp:284: error: within this context
mingw32-make[1]: *** [debug/COperationWIndow.o] Error 1
mingw32-make[1]: Leaving directory `C:/Documents and Settings/markofr/workspace/Client'
mingw32-make: *** [debug] Error 2

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The very similiar line of code from example works fine. Why?!

[MarkoSan]

Ok, I am slowly getting somewhere, but in the statement:

m_pShoppingCartView->model()->setData(index, QVariant((m_pShoppingCartView->order()->orders().size()), 1));

m_pShoppingCartView->model()->setData(index, QVariant((m_pShoppingCartView->order()->orders().size()), 1));

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I get following error:

mingw32-make 
mingw32-make -f Makefile.Debug
mingw32-make[1]: Entering directory `C:/Documents and Settings/markofr/workspace/Client'
g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_DLL -DQT_SQL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAIN -I"..\..\..\..\Qt\4.3.4\include\QtCore" -I"..\..\..\..\Qt\4.3.4\include\QtCore" -I"..\..\..\..\Qt\4.3.4\include\QtGui" -I"..\..\..\..\Qt\4.3.4\include\QtGui" -I"..\..\..\..\Qt\4.3.4\include\QtSql" -I"..\..\..\..\Qt\4.3.4\include\QtSql" -I"..\..\..\..\Qt\4.3.4\include" -I"c:\Qt\4.3.4\include\ActiveQt" -I"debug" -I"." -I"..\..\..\..\Qt\4.3.4\mkspecs\win32-g++" -o debug\CMainWindow.o CMainWindow.cpp
g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_DLL -DQT_SQL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAIN -I"..\..\..\..\Qt\4.3.4\include\QtCore" -I"..\..\..\..\Qt\4.3.4\include\QtCore" -I"..\..\..\..\Qt\4.3.4\include\QtGui" -I"..\..\..\..\Qt\4.3.4\include\QtGui" -I"..\..\..\..\Qt\4.3.4\include\QtSql" -I"..\..\..\..\Qt\4.3.4\include\QtSql" -I"..\..\..\..\Qt\4.3.4\include" -I"c:\Qt\4.3.4\include\ActiveQt" -I"debug" -I"." -I"..\..\..\..\Qt\4.3.4\mkspecs\win32-g++" -o debug\COperationWIndow.o COperationWIndow.cpp
../../../../Qt/4.3.4/include/QtCore/../../src/corelib/kernel/qvariant.h: In member function `void COperationWIndow::chooseMerchandize()':
../../../../Qt/4.3.4/include/QtCore/../../src/corelib/kernel/qvariant.h:415: error: `QVariant::QVariant(bool, int)' is private
COperationWIndow.cpp:284: error: within this context
mingw32-make[1]: *** [debug/COperationWIndow.o] Error 1
mingw32-make[1]: Leaving directory `C:/Documents and Settings/markofr/workspace/Client'
mingw32-make: *** [debug] Error 2

mingw32-make 
mingw32-make -f Makefile.Debug
mingw32-make[1]: Entering directory `C:/Documents and Settings/markofr/workspace/Client'
g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_DLL -DQT_SQL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAIN -I"..\..\..\..\Qt\4.3.4\include\QtCore" -I"..\..\..\..\Qt\4.3.4\include\QtCore" -I"..\..\..\..\Qt\4.3.4\include\QtGui" -I"..\..\..\..\Qt\4.3.4\include\QtGui" -I"..\..\..\..\Qt\4.3.4\include\QtSql" -I"..\..\..\..\Qt\4.3.4\include\QtSql" -I"..\..\..\..\Qt\4.3.4\include" -I"c:\Qt\4.3.4\include\ActiveQt" -I"debug" -I"." -I"..\..\..\..\Qt\4.3.4\mkspecs\win32-g++" -o debug\CMainWindow.o CMainWindow.cpp
g++ -c -g -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_DLL -DQT_SQL_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAIN -I"..\..\..\..\Qt\4.3.4\include\QtCore" -I"..\..\..\..\Qt\4.3.4\include\QtCore" -I"..\..\..\..\Qt\4.3.4\include\QtGui" -I"..\..\..\..\Qt\4.3.4\include\QtGui" -I"..\..\..\..\Qt\4.3.4\include\QtSql" -I"..\..\..\..\Qt\4.3.4\include\QtSql" -I"..\..\..\..\Qt\4.3.4\include" -I"c:\Qt\4.3.4\include\ActiveQt" -I"debug" -I"." -I"..\..\..\..\Qt\4.3.4\mkspecs\win32-g++" -o debug\COperationWIndow.o COperationWIndow.cpp
../../../../Qt/4.3.4/include/QtCore/../../src/corelib/kernel/qvariant.h: In member function `void COperationWIndow::chooseMerchandize()':
../../../../Qt/4.3.4/include/QtCore/../../src/corelib/kernel/qvariant.h:415: error: `QVariant::QVariant(bool, int)' is private
COperationWIndow.cpp:284: error: within this context
mingw32-make[1]: *** [debug/COperationWIndow.o] Error 1
mingw32-make[1]: Leaving directory `C:/Documents and Settings/markofr/workspace/Client'
mingw32-make: *** [debug] Error 2

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The very similiar line of code from example works fine. Why?!

Well, my mistake again, I did not take a look at this line of code carefully, sorry for this spamming post ...

[MarkoSan]

Ok, we are getting somewhere with this widget, but now I encountered a problem. So, I this main window class declaration I have:

CShoppingCartView* m_pShoppingCartView;

CShoppingCartView* m_pShoppingCartView;

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In class CShoppingCart I have a pointer to internal order class:

CMerchandizeOrder* m_pOrder;

CMerchandizeOrder* m_pOrder;

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and corresponding inline function:

inline CMerchandizeOrder* order()
        { return m_pOrder; };

inline CMerchandizeOrder* order()
        { return m_pOrder; };

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Now, when I call:

m_pShoppingCartView->order()->orders().append(tmpOrder);    // adds order to internal qlist
int iOrderSize=m_pShoppingCartView->order()->orders().size();    // calcs size
Q_ASSERT_X(iOrderSize>0, "COperationWindow.cpp", "m_pShoppingCartView->order()->orders().size()<0");    // checks size

m_pShoppingCartView->order()->orders().append(tmpOrder);    // adds order to internal qlist
int iOrderSize=m_pShoppingCartView->order()->orders().size();    // calcs size
Q_ASSERT_X(iOrderSize>0, "COperationWindow.cpp", "m_pShoppingCartView->order()->orders().size()<0");    // checks size

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I get assert failure, so struct is not added to list. I do not know why, please help!!! I've doublechecked if I create qlist of orders and I do it in constructor, so that part is ok. Please help!