Qt 4.1.3 - XP - TrayIcon

I have a successfull prototype for the TrayIcon code that I try to integrate to my main application. I get the following strange compile errors :

Code:

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C:\root\dev\Qt\sms data\sms\moc_mainwindow.o(.text+0x100) In function `ZNK17ApplicationWindow10metaObjectEv': 
46 C:\root\dev\Qt\sms data\sms\moc_mainwindow.cpp multiple definition of `ApplicationWindow::metaObject() const' 
59 C:\root\dev\Qt\sms data\sms\moc_menu.o(.text+0x100):C:\root\dev\Qt\sms data\sms\moc_menu.cpp first defined here 
 C:\root\dev\Qt\sms data\sms\moc_mainwindow.o(.text+0x10a) In function `ZN17ApplicationWindow11qt_metacastEPKc': 
51 C:\root\dev\Qt\sms data\sms\moc_mainwindow.cpp multiple definition of `ApplicationWindow::qt_metacast(char const*)' 
64 C:\root\dev\Qt\sms data\sms\moc_menu.o(.text+0x10a):C:\root\dev\Qt\sms data\sms\moc_menu.cpp first defined here 
 C:\root\dev\Qt\sms data\sms\moc_mainwindow.o(.text+0x158) In function `ZN17ApplicationWindow11qt_metacallEN11QMetaObject4CallEiPPv': 
59 C:\root\dev\Qt\sms data\sms\moc_mainwindow.cpp multiple definition of `ApplicationWindow::qt_metacall(QMetaObject::Call, int, void**)' 
72 C:\root\dev\Qt\sms data\sms\moc_menu.o(.text+0x158):C:\root\dev\Qt\sms data\sms\moc_menu.cpp first defined here 
 C:\root\dev\Qt\sms data\sms\moc_mainwindow.o(.text$_ZN17ApplicationWindowD0Ev[ApplicationWindow::~ApplicationWindow()]+0x0) In function `ZThn8_N17ApplicationWindowD1Ev': 
72 C:\root\dev\Qt\sms data\sms\moc_mainwindow.o(.text$_ZN17ApplicationWindowD0Ev[ApplicationWindow::~ApplicationWindow()]+0x0) multiple definition of `ApplicationWindow::~ApplicationWindow()' 
136 C:\root\dev\Qt\sms data\sms\menu.o(.text+0x44e4):C:\root\dev\Qt\sms data\sms\menu.cpp first defined here 
 C:\root\dev\Qt\sms data\sms\moc_mainwindow.o(.text$_ZN17ApplicationWindowD1Ev[ApplicationWindow::~ApplicationWindow()]+0x0) In function `ZThn8_N17ApplicationWindowD1Ev': 
136 C:\root\dev\Qt\sms data\sms\moc_mainwindow.o(.text$_ZN17ApplicationWindowD1Ev[ApplicationWindow::~ApplicationWindow()]+0x0) multiple definition of `ApplicationWindow::~ApplicationWindow()' 
136 C:\root\dev\Qt\sms data\sms\menu.o(.text+0x3eb8):C:\root\dev\Qt\sms data\sms\menu.cpp first defined here 
 C:\root\dev\Qt\sms data\sms\moc_mainwindow.o(.data+0x0) In function `ZThn8_N17ApplicationWindowD1Ev': 
136 C:\root\dev\Qt\sms data\sms\moc_mainwindow.o(.data+0x0) multiple definition of `ApplicationWindow::staticMetaObject' 
2493 C:\root\dev\Qt\sms data\sms\moc_menu.o(.data+0x0):C:\Dev-Cpp\include\c++\3.4.2\bits\locale_facets.tcc first defined here 
2493 C:\root\dev\Qt\sms data\sms\moc_menu.o(.data+0x0):C:\Dev-Cpp\include\c++\3.4.2\bits\locale_facets.tcc ld returned 1 exit status 
 C:\root\dev\Qt\sms data\sms\Makefile [Build Error]  [sms.exe] Error 1

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I don't where to start looking for the problem.
Do you ?
Do you want me to sow some of my code ?

Check whether HEADERS and SOURCES variables in your .pro file don't contain duplicate entries.

They do, but I did not find right away. Thanks

Strange behaviour

If I code :

Code:

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connect(pbClose, SIGNAL(clicked()), SLOT(showMinimized()));

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The application is minimized as any other application, but if I double-click on the icon it is restored. It is displayed both as minimized application and iconfied.

If I code

Code:

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connect(pbClose, SIGNAL(clicked()), SLOT(toggleVisibility()));

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The application is correctly iconfied only but when I double-click on the icon it is reminimized without me doing anything. It won't stay restored.

I am lost.

Hello

Here is the connect code for the trayicon :

Code:

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connect(mTray, SIGNAL(clicked(const QPoint &, int)), SLOT(toggleVisibility()));
    connect(pbClose, SIGNAL(clicked()), SLOT(showMinimized()));    
    connect(mTray, SIGNAL(closed()), SLOT(slotTrayClosed()));
    connect(aQuitAction, SIGNAL(triggered()), SLOT(close()));

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All works well but there are two problems :
- the application is both minimized in the task bar and iconfied
- then when I click on the icon to close, it closes the application but the icon remains until you hover about it, then it goes.