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Old 12-05-2009, 00:36
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Default Executing and accessing CorelDraw12 through C# application

Hey guys, I've finally found my way back here after a long break (and oddly I've had to reregister) - took me a while to remember the web address, but I'm glad I did.

I'm attempting to write a program that, among other things, opens CorelDraw12, opens some files then resaves/exports them in a different format.
My issue is, how do I launch CorelDraw12 AND gain access to it through my C# code?

So far I've added reference to the 'Corel - CorelDRAW 12.0 Library' COM component and have attempted the following code:

CorelDRAW.ApplicationClass Draw = new CorelDRAW.ApplicationClass();

CorelDRAW.Application Draw = new CorelDRAW.Application();

CorelDRAW.Application Draw = new CorelDRAW.ApplicationClass();
All of these lines execute and CorelDraw launches, but whenever I attempt to do anything with Draw (eg: MessageBox.Show(Draw.Name.ToString()) I receive the following error:

Unable to cast COM object of type 'CorelDRAW.ApplicationClass' to interface type 'CorelDRAW.IDrawApplication'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{398C0002-8D24-11D2-89E7-0000861EBBD6}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).

Can anyone offer me any assistance?
Thanks a lot for your time!
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Old 13-05-2009, 17:22
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I have also attempted
CorelDRAW.Application Draw = new CorelDRAW.ApplicationClass();
as suggested in this thread, and receive the same error.
I'm guessing this could be a more general problem, but I haven't had any luck with google - if anyone can give me a tip what to search for that would also be helpful.
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Old 14-05-2009, 18:14
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Hey again guys, I posted over at the CorelDraw forums and managed to get a solution that I thought I would share.

The test code I used was:
            CorelDRAW.Application Draw = new CorelDRAW.Application();
            Draw.Visible = true;
            Draw.ActiveLayer.CreateEllipse(0, 0, 10, 10, 90, 90, false);
In order to make it run correctly, I had to use REGTLIB (C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\regtlibv12.exe in XP) to register the CorelDraw type library (C:\Program Files\Corel\Corel Graphics 12\Programs\CorelDraw.tlb).
After this, the code ran successfuly.

Hopefully this solution helps others in the future.
I'm no good with wikis, but if someone could post this in the dev wiki I think it would be a useful addition.
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