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    $Date: 1999/04/03 08:41:12 $ $Revision: 1.3 $  
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homeprevnext Overview
    This extension provides a way for applications to determine which  
    WGL extensions are supported by a device.  This is the foundation  
    upon which other WGL extensions are built.  
homeprevnext Issues
    Note that extensions that were previously advertised via glGetString  
    (e.g., the swap interval extension) should continue to be advertised  
    there so existing applications don't break.  They should also be  
    advertised via wglGetExtensionsStringEXT so new applications can make  
    one call to find out which WGL extensions are supported.  
homeprevnext New Procedures and Functions
    const char *wglGetExtensionsStringEXT(void);  
homeprevnext New Tokens
homeprevnext Additions to Chapter 2 of the 1.2 Specification (OpenGL Operation)
homeprevnext Additions to Chapter 3 of the 1.2 Specification (Rasterization)
homeprevnext Additions to Chapter 4 of the 1.2 Specification (Per-Fragment Operations and the Frame buffer)
homeprevnext Additions to Chapter 5 of the 1.2 Specification (Special Functions)
homeprevnext Additions to Chapter 6 of the 1.2 Specification (State and State Requests)
homeprevnext Additions to the WGL Specification
    Advertising WGL Extensions  
    Applications should call wglGetProcAddress to see whether or not  
    wglGetExtensionsStringEXT is supported.  If it is supported then it  
    can be used to determine which WGL extensions are supported by the device.  
	const char *wglGetExtensionsString(void);  
    If the function succeeds, it returns a list of supported  
    extensions to WGL.  Although the contents of the string is  
    implementation specific, the string will be NULL terminated and  
    will contain a space-separated list of extension names. (The  
    extension names themselves do not contain spaces.) If there are no  
    extensions then the empty string is returned.  
    If the function fails, the return value is NULL. To get extended  
    error information, call GetLastError.  
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