windows - What's the difference between TYPE_E_BUFFERTOOSMALL and DISP_E_BUFFERTOOSMALL HRESULT values? -


reviewing winerror.h noticed there're 2 hresult values:

#define disp_e_buffertoosmall _hresult_typedef_(0x80020013l) #define type_e_buffertoosmall _hresult_typedef_(0x80028016l)

both claimed resolve "buffer small" text , both have same "facility" part , differ in "code" part.

what's difference between these 2 values?

disp_e_buffertoosmall intended general use in idispatch interfaces.

i believe type_e_* errors intended type conversion error. type_e_buffertoosmall appears problems converting variants or propvariants. looked around , found used in context of "property bags" (which serializable collection); example, see this.

in context of other question, disp_e_buffertoosmall better fit.


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