如何让一个COM接口返回DOUBLE型指针

[liu_jc]

如何让一个COM接口返回DOUBLE型指针

[akiko]

接口函数中定义一个double**类型的out参数

[liu_jc]

能够返回指针吗？？？

[LeeZi]

HRESULT Proc7(
[out] long * pSize,
[out, size_is( , *pSize)] double ** ppMyType);

[LeeZi]

HRESULT Proc1(
[in] short m;
[in, size_is(m)] short a[]); // If m = 10, a[10]
HRESULT Proc2(
[in] short m;
[in, size_is(m)] short b[][20]); // If m = 10, b[10][20]
HRESULT Proc3(
[in] short m;
[size_is(m)] short * pshort); /* Specifies a pointer
to an m-sized block of shorts */
HRESULT Proc4(
[in] short m;
[size_is( , m)] short ** ppshort); /* Specifies a pointer
to a pointer to an m-sized
block of shorts */
HRESULT Proc5(
[in] short m;
[size_is(m ,)] short ** ppshort); /* Specifies an
m-sized block of pointers
to shorts */
HRESULT Proc6(
[in] short m;
[in] short n;
[size_is(m,n)] short ** ppshort); /* Specifies a pointer to an
m-sized block of pointers, each
of which points to an n-sized
block of shorts.*/
HRESULT Proc7(
[out] long * pSize,
[out, size_is( , *pSize)] my_type ** ppMyType); /* Specifies a pointer
to a sized pointer,
which points to a block
of my_types, whose size is
unknown when the stub
calls the server. */

[akiko]

double* p;是你要返回的指针，接口函数调用中YourInterface->SomeMethod(...,&p);就可以了

[ShareWinJu]

好像不可以，因为调用是内存拷贝的值的

[yxmaomao88]

使用Variant类型吧

[haohaoxuexi]

请问 variant类型怎么用