COM

Private Sub Form_Load()
    With COMAddIns("MyPlugIn.Connect")
        ' Make sure the COM add-in is loaded.
        .Connect = True   ' <---- Fails here

        ' Hook up the desired objects.
        .Object.HookupControls cmdUploadImage
    End With
End Sub

// file: vcr.h

#include "video.h"

class CVcr : public IVideo{
	
public:
	CVcr(void);
	long _stdcall GetSignalValue();
	void _stdcall Delete();
	
private:
	long m_lCurValue;
	int m_nCurCount;
};

// file: vcr.cpp

#include "vcr.h"

CVcr::CVcr(){
	m_lCurValue = 5;
	m_nCurCount = 0;
}

long CVcr::GetSignalValue(){
	
	m_nCurCount++;
	if(5 == m_nCurCount){
		m_lCurValue = 5;
		m_nCurCount = 1;
	}
	
	long lReturnValue = m_lCurValue;
	m_lCurValue += 10;
	return lReturnValue;

}

IVideo * _stdcall CreateVcr(void){
	
	return new CVcr;
}

void CVcr::Delete(){
	
	delete this;
}

// file: video.h - Definition of interface IVideo


class IVideo{
	
public:

	virtual long _stdcall GetSignalValue() = 0;
	virtual void _stdcall Delete() = 0;
	
};

extern "C" IVideo * _stdcall CreateVcr();

// file: tv.cpp

#include "video.h"
#include <iostream> 
#include <windows.h>
using namespace std;

IVideo * CreateInstance(char * pszDll){
	
	// Define a pointer to prototype of CreateVcr function
	typedef IVideo * (_stdcall * CREATEVCRPROC)(void);
	
	// Load the specified library
	HINSTANCE h = LoadLibrary(pszDll);
	
	// Obtain the procedure entry point for CreateVcr
	CREATEVCRPROC proc = reinterpret_cast<CREATEVCRPROC>(GetProcAddress(h, "CreateVcr"));
	
	printf("proc = %d", proc);
	
	// Execute "CreateVcr" indirectly
	return (*proc)();
		
}


int main(int argc, char* argv[]) 
{
	int i; 
	IVideo * pVideo = CreateInstance("vcr.dll");

	for(i=0; i<10; i++) {
		long val = pVideo->GetSignalValue(); 
		cout << "Round: " << i << " - Value: " << val << endl; 
	} 
	
	pVideo->Delete();
	
	return 0; 
} 

<OBJECT id=SWFUpload_0 class=swfupload data="/resource/uploadify/uploadify.swf?r=0.9973842346623738&preventswfcaching=1404983334542" width=160 type=application/x-shockwave-flash height=30 SelectFile="null" SelectFiles="null" StartUpload="null" ReturnUploadStart="null" StopUpload="null" CancelUpload="null" RequeueUpload="null" GetStats="null" SetStats="null" GetFile="null" GetFileByIndex="null" AddFileParam="null" RemoveFileParam="null" SetUploadURL="null" SetPostParams="null" SetFileTypes="null" SetFileSizeLimit="null" SetFileUploadLimit="null" SetFileQueueLimit="null" SetFilePostName="null" SetUseQueryString="null" SetRequeueOnError="null" SetHTTPSuccess="null" SetAssumeSuccessTimeout="null" SetDebugEnabled="null" SetButtonImageURL="null" SetButtonDimensions="null" SetButtonText="null" SetButtonTextPadding="null" SetButtonTextStyle="null" SetButtonAction="null" SetButtonDisabled="null" SetButtonCursor="null" TestExternalInterface="null"></OBJECT>

i'm using the reference Microsoft.Office.Interop.Visio to create a visio drawing document. When trying to obtain a visio application in my c# program as follow : "Application application =new Application()", i got the error below:

La récupération de la fabrique de classes COM pour le composant avec le CLSID {00021A20-0000-0000-C000-000000000046} a échoué en raison de l'erreur suivante : 80040154 Classe non enregistrée (Exception de HRESULT : 0x80040154 (REGDB_E_CLASSNOTREG)).

When using the same type of reference such as "Microsoft.Office.Interop.Word" or "Microsoft.Office.Interop.Excel" everything works properly. Any suggestion on how to address this issue will be really appreciated. Thanks!!