Documents("my.doc").Activate

wordApplication = new QAxObject("Word.Application");
doc = wordApplication->querySubObject("Documents()","my.doc");
doc->dynamicCall("Activate()");

QAxObject* wordApplication;
 QAxObject* doc;
 wordApplication = new QAxObject(this);
 wordApplication->setControl(("{000209FF-0000-0000-C000-000000000046}&"));
 doc = wordApplication->querySubObject("Documents()","my.doc");