Compilation error in MFC Visual Studio 2008 project.

Question

Hi Peoples,

I'm writing a threaded MFC application where child threads post back messages to the main parent thread.

But when I attempt to the define custom messages in the main dialog's header file, eg.

8: #define WM_ADD_PROCESS_TO_LV (WM_USER+0x101)
9 :#define WM_REMOVE_PROCESS_FROM_LV (WM_USER+0x102)

I gett the following compilation errors:

Error    1    error C2010: '+' : unexpected in macro formal parameter list    c:\documents and settings\daniel\desktop\pazuzu\pazuzu\pazuzudlg.h    8    Pazuzu
Error    2    error C2010: '0' : unexpected in macro formal parameter list    c:\documents and settings\daniel\desktop\pazuzu\pazuzu\pazuzudlg.h    8    Pazuzu
Error    3    error C2010: 'x' : unexpected in macro formal parameter list    c:\documents and settings\daniel\desktop\pazuzu\pazuzu\pazuzudlg.h    8    Pazuzu
Error    4    error C2010: '+' : unexpected in macro formal parameter list    c:\documents and settings\daniel\desktop\pazuzu\pazuzu\pazuzudlg.h    9    Pazuzu
Error    5    error C2010: '0' : unexpected in macro formal parameter list    c:\documents and settings\daniel\desktop\pazuzu\pazuzu\pazuzudlg.h    9    Pazuzu
Error    6    error C2010: 'x' : unexpected in macro formal parameter list    c:\documents and settings\daniel\desktop\pazuzu\pazuzu\pazuzudlg.h    9    Pazuzu
Error    7    error C2010: '+' : unexpected in macro formal parameter list    c:\documents and settings\daniel\desktop\pazuzu\pazuzu\pazuzudlg.h    8    Pazuzu
Error    8    error C2010: '0' : unexpected in macro formal parameter list    c:\documents and settings\daniel\desktop\pazuzu\pazuzu\pazuzudlg.h    8    Pazuzu
Error    9    error C2010: 'x' : unexpected in macro formal parameter list    c:\documents and settings\daniel\desktop\pazuzu\pazuzu\pazuzudlg.h    8    Pazuzu
Error    10    error C2010: '+' : unexpected in macro formal parameter list    c:\documents and settings\daniel\desktop\pazuzu\pazuzu\pazuzudlg.h    9    Pazuzu
Error    11    error C2010: '0' : unexpected in macro formal parameter list    c:\documents and settings\daniel\desktop\pazuzu\pazuzu\pazuzudlg.h    9    Pazuzu
Error    12    error C2010: 'x' : unexpected in macro formal parameter list    c:\documents and settings\daniel\desktop\pazuzu\pazuzu\pazuzudlg.h    9    Pazuzu

I've basically copied the code from the MSDN resources, so it may simply be a configuration issue. (Using unicode if that helps) - other than that I'm confused (and tired)

If any one can provide assistance, I'll buy you a beer or 3.

Cheers

---

Daniel Hodder

Answer 1

Such errors appear if there is no space before ‘(‘ in those macro definitions.