设置菜单信息

BOOL WINAPI SetMenuInfo(
  _In_ HMENU       hmenu,
  _In_ LPCMENUINFO lpcmi
);


typedef struct tagMENUINFO {
  DWORD     cbSize; 
  DWORD     fMask;
  DWORD     dwStyle;
  UINT      cyMax;
  HBRUSH    hbrBack;
  DWORD     dwContextHelpID;
  ULONG_PTR dwMenuData;
} MENUINFO, *LPMENUINFO, const *LPCMENUINFO


设置背景色时,须得在AppendMenu那里设置自绘选项,否则不起作用,同样也得填充
cbSize,
要设置什么,就在fMask那里设置相应的选项.