看一下MSDN中这个函数的最后一段说明： Note that the constant OEMRESOURCE must be defined before including WINDOWS.H in order to use any of the OBM_ constants.
还没解决啊~ Res Bitmap names that begin with OBM_OLD represent bitmaps used by Windows versions prior to 3.0.The constant OEMRESOURCE must be defined before including Windows.h in order to use any of the OBM_ constants.Although Windows CE does not support OEM bitmaps, MFC for Windows CE supports the CBitmap::LoadOEMBitmap method for compatibility with existing code. In Windows CE, this method just calls CBitmap::LoadBitmap.Requirements Windows CE versions: 1.0 and later Header file: Declared in Afxwin.h Platform: H/PC Pro, Palm-size PC, Pocket PC
Note that the constant OEMRESOURCE must be defined before including WINDOWS.H in order to use any of the OBM_ constants.
Res
Bitmap names that begin with OBM_OLD represent bitmaps used by Windows versions prior to 3.0.The constant OEMRESOURCE must be defined before including Windows.h in order to use any of the OBM_ constants.Although Windows CE does not support OEM bitmaps, MFC for Windows CE supports the CBitmap::LoadOEMBitmap method for compatibility with existing code. In Windows CE, this method just calls CBitmap::LoadBitmap.Requirements
Windows CE versions: 1.0 and later
Header file: Declared in Afxwin.h
Platform: H/PC Pro, Palm-size PC, Pocket PC
估计这段宏是这么定义的：
#ifdef OEMRESOURCE
const OBM_COMBO ******
.......
#endif
就是说，必须先有OEMRESOURCE这个宏（或者常量）定义，编译器才会将OBM_COMBO这些常量编译进来，否则是忽略这段常量定义的。