com组件调用代码示例

网上com原理课程地址：/article/9810264.html

/article/5069213.html

杨老师课程源码下载地址：http://download.csdn.net/detail/fangyc/3006254#comment

2.在工程中导入组件或类型库

#import "组件所在目录myCom.dll" no_namespace

或

#import "类型库所在目录myCom.tlb"

using namespace MYCOM;

--Method 1-------------------------------------------------------

CoInitialize(NULL);

CLSID clsid;

CLSIDFromProgID(OLESTR("myCom.GetRes"),&clsid);

CComPtr<IGetRes> pGetRes;//智能指针

pGetRes.CoCreateInstance(clsid);

pGetRes->Hello();

pGetRes.Release();//小心哦!!请看最后的“注意”

CoUninitialize();

--Method 2---------------------------------------------------------

CoInitialize(NULL);

CLSID clsid;

HRESULT hr=CLSIDFromProgID(OLESTR("myCom.GetRes"),&clsid);

IGetRes *ptr;

hr=CoCreateInstance(clsid,NULL,CLSCTX_INPROC_SERVER,

__uuidof(IGetRes),(LPVOID*)&ptr);

ptr->Hello();

CoUninitialize();