[MSDN Library June 1998] #IFDEF | #IFNDEF ... #ENDIF Preprocessor Directive (100%)

MSDN Library Visual Studio 6.0 > Visual FoxPro Documentation > Reference > A to Z Language Reference

[MSDN Library September 1992] #ifdef (22.092132505176%)

Product Documentation > Windows 3.1 SDK > Programmer's Reference Volume 4: Resources > PART 2 Tools Reference > Chapter 13 Resource-Definition Statements

[MSDN Library September 1992] #ifdef Statement (16.7866121935889%)

Product Documentation > QuickC for Windows > Toolkit > PART 3 The Resource Compiler and Utilities > Chapter 8 Resource Script Statements > Dialog Control Statements

[MSDN Library June 1998] #ifdef (14.9957264957265%)

MSDN Library Visual Studio 6.0 > Platform SDK > Windows Programming Guidelines > Platform SDK Tools > Compiling > Using the Resource Compiler > Resource Compiler Reference > RC Preprocessor Directives