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.NET Forum / Languages / Managed C++ / September 2006Outlook application object
I want to create an Outlook-appointment using .NET VC. My Visual Basic example starts with: Dim oApp As Microsoft.Office.Interop.Outlook.Application = New Microsoft.Office.Interop.Outlook.Application But my C++ translation: Microsoft::Office::Interop::Outlook::Application *oApp = new Microsoft::Office::Interop::Outlook::Application; does not compile. ('You cannot create an instance of an interface' or something like that). Does anybody know, what's wrong here? Markus Hi Markus, >I want to create an Outlook-appointment using .NET VC. > My Visual Basic example starts with: [quoted text clipped - 9 lines] > does not compile. ('You cannot create an instance of an interface' or > something like that). Does anybody know, what's wrong here? Why not copy the exact error message? Do you use VC2003 or VC2005? In VC2003 I would expect that something like ApplicationClass or _ApplicationClass would be available which represents the so called COM coclass. A coclass is an object you can instantiate and use by an interface it implements, which would be Application in thiscase. In VC2005 you would want to use the new C++/CLI which uses ^ instead of * for managed pointers and gcnew instead of new. -- SvenC > Markus > Hi Markus, > [quoted text clipped - 13 lines] > > Why not copy the exact error message? Because it is produced by German version of Visual Studio .NET 2003 and thus, the error message is in German: error C3153: 'Microsoft::Office::Interop::Outlook::Application': Sie können keine Instanz einer Schnittstelle erstellen > Do you use VC2003 or VC2005? VC2003 > In VC2003 I would expect that something like ApplicationClass or > _ApplicationClass would be available which represents the so called COM > coclass. A coclass is an object you can instantiate and use by an interface > it implements, which would be Application in thiscase. Have you got an example? > In VC2005 you would want to use the new C++/CLI which uses ^ instead of * > for managed pointers and gcnew instead of new. [quoted text clipped - 3 lines] > >> Markus >I want to create an Outlook-appointment using .NET VC. > My Visual Basic example starts with: [quoted text clipped - 9 lines] > does not compile. ('You cannot create an instance of an interface' or > something like that). Does anybody know, what's wrong here? You have to use CoCreateInstance to create an instance of a COM class. You can't do it with new. -cd >> I want to create an Outlook-appointment using .NET VC. >> My Visual Basic example starts with: [quoted text clipped - 14 lines] > > -cd I would be happy, if you could give an example for 'CoCreateInstance' in this context. Markus | >I want to create an Outlook-appointment using .NET VC. | > My Visual Basic example starts with: [quoted text clipped - 14 lines] | | -cd Hmmm... this is a managed client, and the interop assembly is a managed wrapper, so there is no problem to new an instance of the ApplicationClass. Willy. |I want to create an Outlook-appointment using .NET VC. | My Visual Basic example starts with: [quoted text clipped - 11 lines] | | Markus Application refers to an interface which obviously cannot be instantiated, you need to create an instance of ApplicationClass like : Microsoft::Office::Interop::Outlook::ApplicationClass *oApp = new Microsoft::Office::Interop::Outlook::ApplicationClass(); Willy. > |I want to create an Outlook-appointment using .NET VC. > | My Visual Basic example starts with: [quoted text clipped - 19 lines] > > Willy. Okay, that's it. Thank you. Markus Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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