BUG: C4003 When Building Wrapper For Word.Basic 7.0 Object (148223)

The information in this article applies to:

Microsoft Visual C++ 2.0
Microsoft Visual C++ 2.1
Microsoft Visual C++ 2.2
Microsoft Visual C++ 4.0
Microsoft Visual C++, 32-bit Enterprise Edition 5.0
Microsoft Visual C++, 32-bit Enterprise Edition 6.0
Microsoft Visual C++, 32-bit Professional Edition 5.0
Microsoft Visual C++, 32-bit Professional Edition 6.0
Microsoft Visual C++, 32-bit Learning Edition 6.0

This article was previously published under Q148223

SYMPTOMS

Attempting to build the ClassWizard-generated wrapper for the Word.Basic object by using the type library included with the Microsoft Word 95 Developer Kit (Wb70en32.tlb) results in this error:

warning C4003: not enough actual parameters for macro 'ExitWindows'

CAUSE

This problem is actually caused by a macro defined in the Windows SDK header file Winuser.h. Winuser.h redefines ExitWindows() to map to the Win32 SDK API ExitWindowsEx(). This poses a problem for any C++ classes that need to implement a member function named ExitWindows(). The Word.Basic object exposes an automation method called ExitWindows(). When ClassWizard reads the type information contained in the Word type library (Wb70en32.tlb), it generates a class containing a member function called ExitWindows(). Attempting to compile this class generates the C4003 error.

RESOLUTION

Here are two ways to work around this problem. If your application doesn't make use of the ExitWindows() SDK function, you can undefine the macro byincluding the following line of code before the definition of the class that contains the ExitWindows() member function.

   #undef ExitWindows

However, a more straightforward workaround is to rename the ExitWindows() member function for the problem class. For example, rename WordBasic::ExitWindows() to WordBasic::_ExitWindows().

STATUS

Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article.

Modification Type:	Minor	Last Reviewed:	3/9/2005
Keywords:	kbBug kbpending kbwizard KB148223