How to use a DirectShow sample filter ?

[manio]

Hello, folks, I got trouble using one of the DirectShow sample filters, i.e, Ball filter. I got a link error. If I compiled and linked the code sample, the filter would generate something like ball.ax. Could anyone tell me how to use this ball.ax ? I have included required *.h and ball.lib but I still got a linking error ? The linking error is as follows: BallAppDlg.obj : error LNK2001: unresolved external symbol "public: __thiscall CBouncingBall::CBouncingBall(struct IUnknown *,long *)" (??0CBouncingBall@@QAE@PAUIUnknown@@PAJ@Z) ../Release/BallApp.exe : fatal error LNK1120: 1 unresolved externals Anybody help me ? Any response would be greatly appreciated ! Thanks !

[Stephane Rodriguez]

Before you get to compile and link a DirectX sample, you need to go to MSDEV Tools \ Options \ Directories tab, and move the DirectX include/source/lib directories to the top.

[manio]

>>DirectX include/source/lib directories to the top. ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Hello, thanks for you reply first. On my system I have installed Platform SDK and DirectX 8.0 SDK. It seems the DirectX 8.0 SDK has been integrated with Platform SDK. So, I can NOT find the DirectX include/source/lib directory as you menthioned. Could you explain a little more detail ? Or what should I install on my system ? Thanks for your help again.

[Stephane Rodriguez]

manio wrote: On my system I have installed Platform SDK and DirectX 8.0 SDK. It seems the DirectX 8.0 SDK has been integrated with Platform SDK Depends if you have a recent platform SDK. I would suggest to add the <directXsdk\lib> directory in MSDEV \ Tools \ Options \ Directories \ Library. May be the problem is somewhere else. Lookup the public MS DirectShow newsgroup (or google, of course). I remember I have seen this kind of question again and again in the past, and from what I remember it was just a matter of directories. I would suggest