i write a macro:

_m fix {
m_ fix }

macro myStruc name
{
struc name
_m
virtual at 0
}

macro endm
{
end virtual
m_
}

and use it:

myStruc Test
.aa db ?
.bb dw 1
.Size =$ - .aa
endm

mm test

............

but ,it have error

error message:unexpected end of file.

After you opened structure definition with { character in the myStruc macro, everything is processed as the contents of the macroinstruction, so no macroinstructions are processed. You can use some "fix"-defined constant instead (like "endm fix }"), but nothing else will work.

thank for your replay!