When compiling some DirectShow examples on the internet, you will always encounter various problems. The following is a collection:

Appear to still be having problems with linking errors, I 've managed to narrow it down to a few lines of code which cause the problem

Following the pushsource filter sample within the Platform SDK:

// DirectShow uplodes

# Include

<Streams. h>

# Include

<Initguid. h>

# Include

<Qedit. h> // For isamplegrabber

# Include

<Dvdmedia. h>

{8b578d13-87b2-488f-a4c1-ac8d065590d3}
Define_guid (clsid_mypushsource, 0x8b578d13, 0x87b2, 0x488f, 0xa4, 0xc1, 0xac, 0x8d, 0x6, 0x55, 0x90, 0xd3 );

Class mypushsource: Public csource
{
Public:
Mypushsource (iunknown * punk, hresult * phr );
};

Mypushsource: mypushsource (iunknown * punk, hresult * phr)
: Csource (name ("mypushsource"), punk, clsid_mypushsource)
{
// Do nothing yet
}

This code causes the following linking errors:

1> dracloud. OBJ: Error lnk2001: unresolved external symbol "public: Virtual long _ stdcall csource: findpin (unsigned short const *, struct ipin **)"(? Findpin @ csource @ uagjpbgpapauipin @ Z)
1> dracloud. OBJ: Error lnk2001: unresolved external symbol "public: Virtual long _ stdcall cbasefilter: joinfiltergraph (struct ifiltergraph *, unsigned short const *)"(? Joinfiltergraph @ cbasefilter @ uagjpauifiltergraph @ PBG @ Z)
1> dracloud. OBJ: Error lnk2001: unresolved external symbol "public: Virtual long _ stdcall cbasefilter: queryvendorinfo (unsigned short **)"(? Queryvendorinfo @ cbasefilter @ uagjpapag @ Z)

The libraries which are supported in my solution are:

Strmbase. Lib strmiids. Lib quartz. Lib winmm. Lib vfw32.lib odbc32.lib odbccp32.lib atls. Lib comsupp. Lib

I feel I must have missed something, or have the newest DirectX SDK, and platform SDK not got anything about the csource any more, its really confusing me.

======================== Solution =

Look out for "treat wchar_t as built in type" option on the C/C ++ language tab. if you 've been using an older version of strmbas * built from the base classes, you can have said "no" to this option. change it back to "yes ".

Some Link errors can be corrected as follows:
Open C/C ++> language> treat wchar_t as built-in type to yes.
Runtime Library ----> multi-threaded debug (/MTD)