error include "commctrl.h"

Hi!!!
i am getting a error while including commctrl.h and prsht.h. i am new to vc++.. plz help...


1>c:\program files\microsoft sdks\windows\v6.0a\include\commctrl.h(19) : error C2059: syntax error : 'return'
1>Note: including file: C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\prsht.h
1>Note: including file: C:\Program Files\Microsoft SDKs\Windows\v6.0A\include\pshpack4.h
1>c:\program files\microsoft sdks\windows\v6.0a\include\prsht.h(97) : error C2065: 'CALLBACK' : undeclared identifier
1>c:\program files\microsoft sdks\windows\v6.0a\include\prsht.h(97) : error C2065: 'LPFNPSPCALLBACKA' : undeclared identifier
1>c:\program files\microsoft sdks\windows\v6.0a\include\prsht.h(97) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int


these are d errors.