Reg - Conversion of Qt3 to Qt4

dear all,

Now i am trying to convert the Qt3.3.4 files into Qt4.1.4. After Executing Qt3to4 in cmd mode it gives the following some errors.

D:/Qt/4.1.4/include/QtCore\../../src/corelib/thread/qthread.h(31) : error C2146: syntax error : missing ';' before identifier 'QT_MODULE'
D:/Qt/4.1.4/include/QtCore\../../src/corelib/thread/qthread.h(31) : error C2501: 'QT_BEGIN_HEADER' : missing storage-class or type specifiers
D:/Qt/4.1.4/include/QtCore\../../src/corelib/thread/qthread.h(31) : fatal error C1004: unexpected end of file found
zonetrader.cpp
C:\Qt\3.3.4\include\qhostaddress.h(59) : error C2079: 'QHostAddress' uses undefined class 'Q_EXPORT'
C:\Qt\3.3.4\include\qhostaddress.h(59) : error C2239: unexpected token '{' following declaration of 'QHostAddress'
C:\Qt\3.3.4\include\qsocket.h(58) : error C2079: 'QSocket' uses undefined class 'Q_EXPORT'
C:\Qt\3.3.4\include\qsocket.h(58) : error C2239: unexpected token ':' following declaration of 'QSocket'
C:\Qt\3.3.4\include\qsocket.h(58) : error C2059: syntax error : 'public'
C:\Qt\3.3.4\include\qptrcollection.h(50) : error C2079: 'QPtrCollection' uses undefined class 'Q_EXPORT'
C:\Qt\3.3.4\include\qptrcollection.h(50) : error C2239: unexpected token '{' following declaration of 'QPtrCollection'
C:\Qt\3.3.4\include\qgdict.h(53) : error C2653: 'QPtrCollection' : is not a class or namespace name
C:\Qt\3.3.4\include\qgdict.h(53) : error C2146: syntax error : missing ';' before identifier 'getData'
C:\Qt\3.3.4\include\qgdict.h(53) : error C2501: 'Item' : missing storage-class or type specifiers
C:\Qt\3.3.4\include\qgdict.h(53) : warning C4183: 'getData': member function definition looks like a ctor, but name does not match enclosing class
C:\Qt\3.3.4\include\qgdict.h(54) : error C2653: 'QPtrCollection' : is not a class or namespace name
C:\Qt\3.3.4\include\qgdict.h(54) : error C2146: syntax error : missing ';' before identifier 'setData'
C:\Qt\3.3.4\include\qgdict.h(54) : error C2501: 'Item' : missing storage-class or type specifiers
C:\Qt\3.3.4\include\qgdict.h(54) : error C2653: 'QPtrCollection' : is not a class or namespace name


All errors shows in qt include files. give any solutions.

regards,
suresh.

Why does it include both Qt3 and Qt4 headers?

I set only Qt4 includes in environment variables.

Check your project --- maybe path to Qt3 is set somewhere. Make sure you use Qt4 tools and double check your enviroment variables (echo %PATH% and so on).

I crosschecked the environment variables and vc++ settings. i couldn't find the Qt3 include. Is there any possibility in somewhere because previously i was working with Qt3

Regards,
suresh.

Did you run "make clean"? Which file do you get those errors for?

After running "make clean" the following errors occured.

Microsoft (R) Program Maintenance Utility Version 7.10.3077
Copyright (C) Microsoft Corporation. All rights reserved.

nmake -f Makefile.Debug clean

Microsoft (R) Program Maintenance Utility Version 7.10.3077
Copyright (C) Microsoft Corporation. All rights reserved.

del moc\moc_zonetraderwidget.cpp
Could Not Find D:\projects\inprogress\Avadhi_orderSim\OrderSimula tion_Augest\Plu
gins\ZoneTrader\moc\moc_zonetraderwidget.cpp
del qmake_image_collection.cpp
Could Not Find D:\projects\inprogress\Avadhi_orderSim\OrderSimula tion_Augest\Plu
gins\ZoneTrader\qmake_image_collection.cpp
del obj\zonetraderwidget.obj
Could Not Find D:\projects\inprogress\Avadhi_orderSim\OrderSimula tion_Augest\Plu
gins\ZoneTrader\obj\zonetraderwidget.obj
del obj\plugin.obj
Could Not Find D:\projects\inprogress\Avadhi_orderSim\OrderSimula tion_Augest\Plu
gins\ZoneTrader\obj\plugin.obj
del obj\moc_zonetraderwidget.obj
Could Not Find D:\projects\inprogress\Avadhi_orderSim\OrderSimula tion_Augest\Plu
gins\ZoneTrader\obj\moc_zonetraderwidget.obj
del ..\..\bin\plugins\designer\ZoneTrader.exp


Regards,
suresh.

Quote:

---

Originally Posted by suresh

After running "make clean" the following errors occured.

---

I don't see any errors.

Quote:

---

Originally Posted by suresh

del qmake_image_collection.cpp

---

If your Makefile knows something about image collections, then it isn't a Qt4 Makefile --- generate a new one and try again.

Quote:

---

Originally Posted by jacek

If your Makefile knows something about image collections, then it isn't a Qt4 Makefile --- generate a new one and try again.

---

Not true. uic3 will create a qmake_image_collection.cpp from an IMAGES variable in the .pro file.

Like Qt3Support, this is a porting aid. You want to use resources instead of IMAGES in your finished project, but since you can't do everything at once, it's a helpful tool to get you there.

Atlast I found my error. In vc++ Directories Qt3 path set. I changed and now it works fine.

Thanks to Jacek and Brandybuck.

Regards,
suresh.

Quote:

---

Originally Posted by Brandybuck

uic3 will create a qmake_image_collection.cpp from an IMAGES variable in the .pro file.

---

Probably you are right, but I don't remember that IMAGES did work when I was porting my apps to Qt4. It was some time ago, so either I don't remember well, or something has changed.

Anyway there is no IMAGES variable in Qt4 docs (there's FORMS3 only).