In the Windows edition, you can create a send data UOC routine in the following development environments:

• Microsoft Visual C++ Version 5.0 or later (preprocessor: 32-bit)
• Platform SDK February 2003 or later (preprocessor: IPF)
• Visual Studio 2005 or later (preprocessor: EM64T)

To create a DLL file:

1. Select the function for your send data UOC routine; create this function in the C language that is used to create application programs for Windows HiRDB. Use senduoc.dll as the DLL filename for a send data UOC routine. Datareplicator's UOC routine header files are stored in \include under the Datareplicator installation directory.
2. Compile and link the created function to create a DLL file. To call the UOC routine from Datareplicator, you must create an interface function with the __cdecl calling convention, and then export it.

This subsection explains how to compile and link a UOC routine in each development environment.

(a) Microsoft Visual C++ Version 5.0

If you use Microsoft Visual C++ Version 5.0 to compile and link your UOC routine, select Settings from the Project menu to specify options.

The following table lists and describes the items to be specified in Project Settings or Settings.

Table 8-35 Items to be specified in Project Settings or Settings in Microsoft Visual C++ Version 5.0

Item	Category	Category setting	Setting
Compiler	Code Generation	Struct Member Alignment	8 bytes
		Runtime Library	Multi-threaded DLL
		Calling Convention	_cdecl *
	Preprocessor	Include file path	Datareplicator-installation-directory\include

If an unresolved link error occurs, specify all libraries required during linking.

(b) Platform SDK February 2003

• UOC routine compilation
  

  cl.exe /c /D_MT /D_DLL /MD /D"WINVER=0x0400" /D"_WIN32_WINNT=0x0333 /D"_WINNT" /D"NDEBUG" /D"_WINDOWS" /D"WIN32" /D"WIN64" /nologo /I Datareplicator-installation-directory\include UOC-source-file-name[UOC-source-file-name]...

• UOC routine linkage
  

  link.exe /subsystem:console /incremental:no /machine:IA64 /out: senduoc.dll /DLL /DEF:definition-file UOC-object-file-name[UOC-object-file-name]...

(c) Visual Studio 2005

If you use Visual Studio 2005 to compile and link your UOC routine, select Settings from the Project menu to specify options.

The following table lists and describes the items to be specified.

Table 8-36 Items to be specified in Project Settings or Settings in Visual Studio 2005

Item	Category	Category setting	Setting
Platform	--	--	Win32
Configuration Properties	General	Common Language Runtime Support	No Common Language Runtime Support
Compiler	Code Generation	Struct Member Alignment	8 bytes
		Runtime Library	Multi-threaded DLL
	Advanced	Calling Convention	_cdecl *
	General	Additional Include Directories	Datareplicator-installation-directory\include

Legend:

--: Not applicable

If an unresolved link error occurs, specify all libraries required during linking.

• Check that the created UOC routine does not use the same memory mapped file that is used by the source Datareplicator or by any other system.
• If the UOC routine's processing results in an error, the name of the DLL file is displayed in the error log file as the program name.
• Add the folder containing the UOC routine to the path system environment variable.