symbian link 错误PRJ0002，请高手帮忙

Linking...
/OUT:"C:\Symbian\9.1\S60_3rd\\Epoc32\release\winscw\udeb\TestPic.exe" /NOLOGO /LIBPATH:"C:\Symbian\9.1\S60_3rd\\Epoc32\release\winscw\udeb" /NODEFAULTLIB /INCLUDE:"?_E32Bootstrap@@YGXXZ" /DEBUG /ASSEMBLYDEBUG /PDB:"C:\work\TestPic\Deb_S60_30_WINSCW/TestPic.pdb" /SUBSYSTEM:WINDOWS /ENTRY:"__E32Bootstrap"  /NDSProjectFile "C:\work\TestPic\TestPic\TestPic.vcproj" /NDSSDKShortName S60_30 euser.lib apparc.lib cone.lib eikcore.lib avkon.lib commonengine.lib efsrv.lib estor.lib eikcoctl.lib eexe.lib  kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib
.\Deb_S60_30_WINSCW\testpic.uid.obj
.\Deb_S60_30_WINSCW\MapViewer.obj
.\Deb_S60_30_WINSCW\TestPic.obj
.\Deb_S60_30_WINSCW\TestPicApplication.obj
.\Deb_S60_30_WINSCW\TestPicAppUi.obj
.\Deb_S60_30_WINSCW\TestPicContainer.obj
.\Deb_S60_30_WINSCW\TestPicDocument.obj
.\Deb_S60_30_WINSCW\TestPicView.obj
epocroot = \Symbian\9.1\S60_3rd\
* mwldsym2.exe -msgstyle gcc -stdlib "C:\Symbian\9.1\S60_3rd\\Epoc32\release\winscw\udeb\EEXE.LIB" -m "?_E32Bootstrap@@YGXXZ" -subsystem windows -g C:\Symbian\9.1\S60_3rd\Epoc32\release\winscw\udeb\euser.lib C:\Symbian\9.1\S60_3rd\Epoc32\release\winscw\udeb\apparc.lib C:\Symbian\9.1\S60_3rd\Epoc32\release\winscw\udeb\cone.lib C:\Symbian\9.1\S60_3rd\Epoc32\release\winscw\udeb\eikcore.lib C:\Symbian\9.1\S60_3rd\Epoc32\release\winscw\udeb\avkon.lib C:\Symbian\9.1\S60_3rd\Epoc32\release\winscw\udeb\commonengine.lib C:\Symbian\9.1\S60_3rd\Epoc32\release\winscw\udeb\efsrv.lib C:\Symbian\9.1\S60_3rd\Epoc32\release\winscw\udeb\estor.lib C:\Symbian\9.1\S60_3rd\Epoc32\release\winscw\udeb\eikcoctl.lib C:\Symbian\9.1\S60_3rd\Epoc32\release\winscw\udeb\eexe.lib -o "C:\Symbian\9.1\S60_3rd\\Epoc32\release\winscw\udeb\TestPic.exe" -noimplib -l .\Deb_S60_30_WINSCW -search testpic.uid.o MapViewer.o TestPic.o TestPicApplication.o TestPicAppUi.o TestPicContainer.o TestPicDocument.o TestPicView.o
mwldsym2.exe: Undefined symbol: 'class TSize RWindowBase::Size(void) const (?Size@RWindowBase@@QBE?AVTSize@@XZ)'
mwldsym2.exe: referenced from 'CMapViewer::CMapViewer(class RWsSession &, class CWsScreenDevice &, class RWindow &, int) (??0CMapViewer@@AAE@AAVRWsSession@@AAVCWsScreenDevice@@AAVRWindow@@H@Z)' in MapViewer.cpp:36
mwldsym2.exe: Undefined symbol: 'class CDirectScreenAccess * CDirectScreenAccess::NewL(class RWsSession &, class CWsScreenDevice &, class RWindowBase &, class MDirectScreenAccess &) (?NewL@CDirectScreenAccess@@SAPAV1@AAVRWsSession@@AAVCWsScreenDevice@@AAVRWindowBase@@AAVMDirectScreenAccess@@@Z)'
mwldsym2.exe: referenced from 'void CMapViewer::ConstructL(void) (?ConstructL@CMapViewer@@AAEXXZ)' in MapViewer.cpp:79
mwldsym2.exe: Undefined symbol: 'void CDirectScreenAccess::StartL(void) (?StartL@CDirectScreenAccess@@QAEXXZ)'
mwldsym2.exe: referenced from 'void CMapViewer::StartDrawingL(void) (?StartDrawingL@CMapViewer@@QAEXXZ)' in MapViewer.cpp:123
mwldsym2.exe: Undefined symbol: 'void CFbsBitGc::SetClippingRegion(class TRegion const *) (?SetClippingRegion@CFbsBitGc@@QAEXPBVTRegion@@@Z)'
mwldsym2.exe: referenced from 'void CMapViewer::StartDrawingL(void) (?StartDrawingL@CMapViewer@@QAEXXZ)' in MapViewer.cpp:134
mwldsym2.exe: Undefined symbol: 'void CFbsScreenDevice::Update(void) (?Update@CFbsScreenDevice@@QAEXXZ)'
mwldsym2.exe: referenced from 'void CMapViewer::RunL(void) (?RunL@CMapViewer@@EAEXXZ)' in MapViewer.cpp:188
Errors caused tool to abort.
TestPic : error PRJ0002 : error result returned from 'link.exe'.

Build log was saved at "file://c:\work\TestPic\TestPic\Deb_S60_30_WINSCW\BuildLog.htm"
TestPic - 1 error(s), 6 warning(s)


---------------------- Done ----------------------

    Rebuild All: 0 succeeded, 1 failed, 0 skipped
--------------------编程问答-------------------- 链接错误，检查一下是否加入了所需要的lib --------------------编程问答-------------------- 怎么检查缺少哪个 链接 呢，主要是没改变什么代码，重新编译就link错误，再请教

补充：移动开发 ,  Symbian