Building / compiling DirectShow "empty DLL".

[Vaclav_]

Building / compiling DirectShow DLL I am still not sure how this “empty DLL” is being compiled. Here is an example of DirctShow sample (Synth ) direct from SDK 8.1. I am using #pragma message to see the flow of compilation. I compiles / links just fine , but the commonly used $ifndef / #define preprocessed flag does not stop multiple passes thru the source files. Here is the build output.

Compiling resources...
Compiling...
dynsrc.cpp
synth.cpp
Compiling D:\00\0 SDK\DirectShow SDK 8.1 new\DXF\DXSDK\samples\Multimedia\DirectShow\Filters\Filter_Base\dynsrc.cpp
Last modified on Sun Mar 23 10:23:52 2014
File: DynSrc.cpp
implements CDynamicSource, which is a Quartz source filter
#include
#include
#include DynSrc.h
File: DynSrc.h
DirectShow sample code - defines classes to simplify creation of
ActiveX source filters that support continuous generation of data
Compiling D:\00\0 SDK\DirectShow SDK 8.1 new\DXF\DXSDK\samples\Multimedia\DirectShow\Filters\Filter_Base\DynSrc.h
Last modified on Sun Mar 23 09:52:24 2014
#define __CDYNAMICSOURCE__ START
define CDynamicSource class
define CDynamicSourceStream class
#define __CDYNAMICSOURCE__ END
#include DynSrc.h
synthprp.cpp
Compiling ***MODIFIED***C:\Program Files\Microsoft Visual Studio\VC98\INCLUDE\initguid.h
Last modified on Sun Mar 2 13:48:42 2014
Definitions for controlling GUID initialization
File: DynSrc.h
DirectShow sample code - defines classes to simplify creation of
ActiveX source filters that support continuous generation of data
Compiling D:\00\0 SDK\DirectShow SDK 8.1 new\DXF\DXSDK\samples\Multimedia\DirectShow\Filters\Filter_Base\DynSrc.h
Last modified on Sun Mar 23 09:52:24 2014
#define __CDYNAMICSOURCE__ START
define CDynamicSource class
define CDynamicSourceStream class
#define __CDYNAMICSOURCE__ END
A_Test.cpp
Generating Code...
Compiling D:\00\0 SDK\DirectShow SDK 8.1 new\DXF\DXSDK\samples\Multimedia\DirectShow\Filters\Filter_Base\A_Test.cpp
Last modified on Sun Mar 23 09:40:08 2014
Linking...
Creating library Debug/synth.lib and object Debug/synth.exp
synth.ax - 0 error(s), 0 warning(s)

Here is a sceond issue, probably related to first one.

So I tried to stop the compilation using #error. It gives expected output , but does not stop the compilation. Here is the output.

Compiling resources...
Compiling...
dynsrc.cpp
Compiling D:\00\0 SDK\DirectShow SDK 8.1 new\DXF\DXSDK\samples\Multimedia\DirectShow\Filters\Filter_Base

[Lost User]

Vaclav_Sal wrote:

If this post looks goofy as far as text and code goes, sorry I could not get preview to work.

You need to clear the checkbox below the edit window titled "Treat my content as plain text, not as HTML".