BUG: Windows NT 4.0 DDK May Report Build Errors When Platform SDK Is Installed

ID: Q232535

The information in this article applies to:

Microsoft Windows NT 4.0 Driver Development Kit (DDK)

SYMPTOMS

When building projects using the Windows NT 4.0 DDK, with the Platform SDK installed, the following build errors may be generated:


c:\ddk\src\mmedia>build -ceZ
BUILD: Compile and Link for i386
BUILD: Compiling c:\ddk\src\mmedia\drvlib directory
Compiling - drvlib\drvlib.c for i386
Compiling - drvlib\reslist.c for i386
Compiling - drvlib\reslist1.c for i386
c:\mssdk\include\windef.h(170) : error C2061: syntax error : identifier 'WPARAM'
c:\mssdk\include\windef.h(170) : error C2059: syntax error : ';'
c:\mssdk\include\windef.h(171) : error C2061: syntax error : identifier 'LPARAM'
c:\mssdk\include\windef.h(171) : error C2059: syntax error : ';'
c:\mssdk\include\windef.h(172) : error C2061: syntax error : identifier 'LRESULT'
c:\mssdk\include\windef.h(172) : error C2059: syntax error : ';'
Compiling - drvlib\registry.c for i386

CAUSE

The headers ( *.h ) for the Platform SDK contain some enhancements for 64-bit Windows NT, including a redefinition of WPARAM, LPARAM, and LRESULT:

Old Definition (windef.h)


/* Types use for passing & returning polymorphic values */ 
typedef UINT WPARAM;
typedef LONG LPARAM;
typedef LONG LRESULT;

New Definition (windef.h)


typedef UINT_PTR            WPARAM;
typedef LONG_PTR            LPARAM;
typedef LONG_PTR            LRESULT;

The Windows NT 4.0 DDK does not define these new types, and some samples do not include the necessary headers to define this value.

RESOLUTION

Users can force use of the old headers by changing the order of the Include environment variable. For example, if your Include environment variable resembles the following:


include=c:\mssdk\INCLUDE;C:\Program Files\Microsoft Visual Studio\VC98\atl\include;C:\Program Files\ 
Microsoft Visual Studio\VC98\mfc\include;C:\Program Files\Microsoft Visual Studio\VC98\include

it should be changed by moving the entry "c:\mssdk\INCLUDE" to the end of the list, as follows:


include=C:\Program Files\Microsoft Visual Studio\VC98\atl\include;C:\Program Files\ 
Microsoft Visual Studio\VC98\mfc\include;C:\Program Files\Microsoft Visual Studio\VC98\include;c:\mssdk\INCLUDE

This action forces the DDK build environment to use the headers from the Visual C++ environment before it uses the Platform SDK.

Users can change the Include environment variable using one or both of the following methods:

By using the System applet in Control Panel. Click the Environment tab and change the include entry under User Variables.

By modifying the Setenv.bat file found in the Platform SDK install directory. Search for the keyword "Include".

STATUS

Microsoft has confirmed this to be a bug in the Windows NT 4.0 DDK. This problem does not occur in the Windows 2000 DDK.

Additional query words:


Keywords          : kbDDK kbNTOS400 kbDSupport kbGrpNTDDK 
Version           : winnt:
Platform          : winnt 
Issue type        : kbbug

Last Reviewed: July 16, 1999