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Problem with C# .NET Windows Shell Extension and DragQueryFile/IDataObject.GetData

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I'm trying to write a Windows shell extension in C# using COM Interop and I'm running into some issues retrieving the list of files which were selected. My understanding is that I'm supposed to use DragQueryFile based on the data I retrieve from calling IDataObject.GetData on the argument passed to Initialize. However, the call to GetData returns a value less than zero indicating an error and I always get 0 as the return value to DragQueryFile. My source code is available at http://www.andrew.cmu.edu/user/jsd1/code.zip. I greatly appreciate any help you can provide!

Thanks,
Jeff
- Moved by nobugz Wednesday, March 18, 2009 12:00 AM not a bcl q (Moved from .NET Base Class Library to Where is the Forum For…?)
Tuesday, March 17, 2009 10:52 PM

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Hello,

Thank you for your post! I would suggest creating a new thread for your question in the (MSDN > Forums Home > Windows Forms > Windows Forms General) forum located here: (http://social.msdn.microsoft.com/Forums/en-US/winforms/threads/).

Hope that would be helpful.

Have a great day!

Thanks & regards,
Ashawani Tier 2 Application Support Server and Tools Online Engineering Live Services Team
- Proposed as answer by ashawani_dubey Wednesday, March 18, 2009 5:10 AM
- Marked as answer by ashawani_dubey Thursday, April 2, 2009 5:49 AM
Wednesday, March 18, 2009 5:09 AM

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Hello,

Thank you for your post! I would suggest creating a new thread for your question in the (MSDN > Forums Home > Windows Forms > Windows Forms General) forum located here: (http://social.msdn.microsoft.com/Forums/en-US/winforms/threads/).

Hope that would be helpful.

Have a great day!

Thanks & regards,
Ashawani Tier 2 Application Support Server and Tools Online Engineering Live Services Team
- Proposed as answer by ashawani_dubey Wednesday, March 18, 2009 5:10 AM
- Marked as answer by ashawani_dubey Thursday, April 2, 2009 5:49 AM
Wednesday, March 18, 2009 5:09 AM
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I suggest you post you code and the error code returned by shell to the microsoft.public.platformsdk.shell newsgroup.
MSMVP VC++

Wednesday, March 18, 2009 4:21 PM