How to use structure in Method?

[Amar Sutar]

Hi All I am writing a component using ATL. One of the method from the component accept a pointer to a structure. This structure definition is in other header file. [id(3), helpstring("method get_StreamMediaType")] HRESULT get_StreamMediaType([in,out] AM_MEDIA_TYPE* pVal); AM_MEDIA_TYPE present in 'strmif.h' file. When I am trying to compile the project it gives me error in IDL file as .\DSMediaInfoServices.idl(24) : error MIDL2025 : syntax error : expecting a type specification near "AM_MEDIA_TYPE" .\DSMediaInfoServices.idl(24) : error MIDL2026 : cannot recover from earlier syntax errors; aborting compilation Thanks in Advance.:) Amar -- modified at 9:25 Thursday 11th May, 2006

[Laxman Auti]

I think you need to add header file in the component so that idl can understand what is AM_MEDIA_TYPE Knock out 'T' from CAN'T , You 'CAN' if you think you 'CAN' :cool: -- modified at 1:03 Friday 12th May, 2006

[heboy]

hello ,how can I ask question in here? I just can't find a place to post my question .Which button allows me to write? I have use WTL from a short time ago. I didn't know MFC very well. so , about the macro of message ,they are so hard for me ! I wonder all the message function protype(and how many they are). ok , MESSAGE_HANDLER ,COMMAND_HANDLER, and which like ON_BN_CLICK, MSG_WM_*, NOTIFY_HANDER, and so on ,is they are different? Give me a detail describe. Thank you! I like my job.

[toxcct]

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[ThatsAlok]

heboy wrote:

MESSAGE_HANDLER ,COMMAND_HANDLER, and which like ON_BN_CLICK, MSG_WM_*,

by Usage they are same, but technically they are different@

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers, Alok Gupta VC Forum Q&A :- I/ IV

[ThatsAlok]

Amar Sutar wrote:

[id(3), helpstring("method get_StreamMediaType")] HRESULT get_StreamMediaType([in,out] AM_MEDIA_TYPE* pVal); AM_MEDIA_TYPE present in 'strmif.h' file.

it better you copy that structure in your IDL file!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers, Alok Gupta VC Forum Q&A :- I/ IV

[Stone Free]

There is also a strmif.idl file, which includes axcore.idl which defines that structure AM_MEDIA_TYPE, so I would import "strmif.idl";to get hold of the definiton