QT 插件调用

#ifndef DMREGISTER

#define DMREGISTER

#include <Windows.h>

#include <QLibrary>

#include "atlbase.h"

//#include "dm.tlh"

struct Idmsoft;

Idmsoft* DmReg(const char* file);

#endif // DMREGISTER

#include "DmReg.h"

#include "dm.tlh"

//#include "atlcom.h"

//#import "D:\\3.1233\\dm.dll" no_namespace

typedef   HRESULT (__stdcall *Func) (REFCLSID,REFIID,LPVOID*);

Idmsoft *DmReg(const char* file)

{

//CoInitialize(0);

HRESULT  hr;

Func GetClass=nullptr;

GetClass=(Func)QLibrary::resolve(file,"DllGetClassObject");

if(!GetClass)return nullptr;

IClassFactory* pFactory=nullptr;

hr=GetClass(__uuidof(dmsoft),IID_IClassFactory,(LPVOID*)&pFactory);

if(FAILED(hr))return nullptr;

Idmsoft* idmsoft=nullptr;

hr=pFactory->CreateInstance(NULL,__uuidof(Idmsoft),(LPVOID*)&idmsoft);

pFactory->Release();

if(!idmsoft)return nullptr;

return idmsoft;

}