1 mike  1.1 
 2           
 3               1.	In .h files the following identifiers must be surrounded by
 4           	the PEGASUS_STD() macro (which prepends std:: to the argument).
 5           
 6           	    ostream
 7           	    istream
 8           	    cout
 9           	    cerr
10           
11           	Do not use this macro in .cpp files. Instead put the following
12           	at the beginning of the file:
13           

14 mike  1.2 	    PEGASUS_USING_STD;

15 mike  1.1 
16               2.	The following does not compile with some compilers.
17           
18           	    class X
19           	    {
20           	    public:
21           
22           		static const Uint32 COLOR = 225;
23           	    };
24           
25           	Use this instead:
26           
27           	    class X
28           	    {
29           	    public:
30           
31           		static const Uint32 COLOR;
32           	    };
33           
34           	And place this in the .cpp file:
35           
36 mike  1.1 	    const Uint32 X::COLOR = 255;
37           

38 mike  1.2 	Or use enumerated types:

39 mike  1.1 
40           	    class X
41           	    {
42           	    public:
43           
44           		enum { COLOR = 225 };
45           	    };
46           

47 mike  1.2     3.	Explain use of Linkage.h files and linkage directives.