Adding new GUID to uuids.h and the new library won't link

[Vaclav_]

I have added (to the working library) GUID for CLSID_IMGSinkFilter to uuids.h header using this : // 1d4d3676-96ef-4cd7-a3d7-07fac0d0c585 OUR_GUID_ENTRY(CLSID_IMGSinkFilter, 0x1d4d3676, 0x96ef, 0x4cd7, 0xa3, 0xd7, 0x07, 0xfa, 0xc0, 0xd0, 0xc5, 0x85) This GUID will be used in static library. The library compiles and builds, by itself. The main application complies but it fails to link to the GUID with following error: VidCapLib.lib(_Graph.obj) : error LNK2001: unresolved external symbol _CLSID_IMGSinkFilter Debug/TCC_MDI.exe : fatal error LNK1120: 1 unresolved externals So the VidCapLib.lib is not complete. What did I missed? Any help as always will be appreciated. Cheers Vaclav

[_Superman_]

In the header file you write this code -

#include <guiddef.h>

DEFINE_GUID(CLSID_IMGSinkFilter, 0x1d4d3676, 0x96ef, 0x4cd7, 0xa3, 0xd7, 0x07, 0xfa, 0xc0, 0xd0, 0xc5, 0x85);

In the source file where you're using CLSID_IMGSinkFilter, include the initguid.h header file. This step is not needed for newer compilers.

«_Superman_»  _I love work. It gives me something to do between weekends.

_Microsoft MVP (Visual C++) (October 2009 - September 2013)

Polymorphism in C

[Vaclav_]

Thanks, works as advertized! Now I need to get rid of some DirectShow multiple defintions, no problem. BTW what class(es) did you take to have this much knowledge? Or are you just a old as I am, but much smarter? Thanks again and if you ever in Houston, I owe you a beer. Vaclav

[Vaclav_]

Spoke too soon. My attempt to stop multiple defintions run into a snag. I added a "standard" #ifndef / #define flag/ switch to uuids.h - the one I have modified. I make sure I use that one. The "problem" is with plain / non modified DirectShow BaseClasses WXDebug.cpp file. It compiler get wild in this macro : /* Stuff for printing out our GUID names */ GUID_STRING_ENTRY g_GuidNames[] = { #define OUR_GUID_ENTRY(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \ { #name, { l, w1, w2, { b1, b2, b3, b4, b5, b6, b7, b8 } } }, #include }; D:\00\0 SDK\DIrectShow 8.1 SDK\samples\Multimedia\DirectShow\BaseClasses\wxdebug.cpp(936) : error C2059: syntax error : '}' D:\00\0 SDK\DIrectShow 8.1 SDK\samples\Multimedia\DirectShow\BaseClasses\wxdebug.cpp(936) : error C2143: syntax error : missing ';' before '}' D:\00\0 SDK\DIrectShow 8.1 SDK\samples\Multimedia\DirectShow\BaseClasses\wxdebug.cpp(936) : error C2143: syntax error : missing ';' before '}' D:\00\0 SDK\DIrectShow 8.1 SDK\samples\Multimedia\DirectShow\BaseClasses\wxdebug.cpp(939) : error C2070: illegal sizeof operand Error executing cl.exe. Apparently the #include header is no longer OK in the GUID_STRING_ENTRY macro. I have no clue how to modify this macro and keep the DirectShow debug happy. Not realy sure if I need the debug, so I may just skip it from compiling if things don't fall apart more.

[_Superman_]

Didn't take too many classes in programming. Mostly self learnt, like most of the people here. It's probably 16 years of doing the same thing that's helping. I also retain all the test code that I ever wrote with proper book keeping. So that becomes the perfect reference material. Was in Dallas for a couple of days last month. Never been to Houston except during transit a couple of times. Will ping you the next time I'm around and get that beer. :) If you're coming to India any time, please get in touch. :thumbsup:

«_Superman_»  _I love work. It gives me something to do between weekends.

_Microsoft MVP (Visual C++) (October 2009 - September 2013)

Polymorphism in C