Connecting to COM object: requested control could not be instantiated

koronabora

Hello!

Please, help me with connecting QT programm to COM object.

COM object:

I have registered .dll - Sh4Ole.dll using

regsrv32 Sh4Ole.dll

Info from registry:

GUID = {AF5496E4-4D18-4932-A422-4C778BF11053}
typelib = {95456CCB-659C-438A-8B48-C1637422941F}
Name = Sh4Ole.SH4App

My code:


#include <QtCore/QCoreApplication>
#include <ActiveQt\QAxBase.h>
#include <ActiveQt\QAxObject.h>
#include <ActiveQt\QAxBase.h>
#include <QDebug>

#include "SH.h"
//#import "D:\\Sh4Ole.dll"

using namespace Sh4Ole;

int main(int argc, char *argv[])
{
	QCoreApplication a(argc, argv);

	ISH4Ole* ole = new ISH4Ole();
	qDebug() << ole->setControl("{AF5496E4-4D18-4932-A422-4C778BF11053}");
	qDebug() << ole->SetServerName("SDBSERV:pTa3t1000");
	qDebug() << ole->DBLoginEx("Admin", "");
	qDebug() << ole->DBConnected();
	qDebug() << ole->GetDBVersion();
	system("pause");
	ole->DBLogout();
	if (ole != Q_NULLPTR)
		ole->deleteLater();
	return a.exec();
}

"SH.h" and "SH.cpp" was generated by "dumpcpp.exe"

Console output:

QAxBase::setControl: requested control {AF5496E4-4D18-4932-A422-4C778BF11053} co
uld not be instantiated
false
QAxBase::qt_metacall: Object is not initialized, or initialization failed
6317352
QAxBase::qt_metacall: Object is not initialized, or initialization failed
6317352
QAxBase::qt_metacall: Object is not initialized, or initialization failed
6317352
QAxBase::qt_metacall: Object is not initialized, or initialization failed
""
Для продолжения нажмите любую клавишу . . .
QAxBase::qt_metacall: Object is not initialized, or initialization failed

Test utility from developers of SH4 works well, but it used Borland Delphi laguage.

==================================================================

hskoglund

Hi, QCoreApplication does not start OLE for you, either use QApplication or try adding something like this first:

CoInitializeEx(NULL, COINIT_MULTITHREADED);

koronabora

All works well now.

Thank you!