Extern Syntax
BlitzMax Forums/BlitzMax Programming/Extern Syntax
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| Looking at some of the module sources, there's a lot undocumented about Externs. I'm looking at pub.stdc and wondering what the following mean: 1. Extern "c" - The docs say nothing about Extern taking an argument. What meaning does the "c" have? What others can be used? 2. str$z - Am I correct in assuming $z is a type tag? What type does it correspond to? 3. Extern Consts - How does an external constant differ from one outside an Extern block? Thanks! |
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| 1. The argument after Extern tells the linker what libraries it should include to resolve external references. "C" -> Standard C-Libraries "Win32" -> Windows Subsystem ( user32, kernel32, ... ) ... 2. Yes, it's a type tag. $z -> C-String $w -> Unicode String |
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| The extern extras tell the compiler what the calling conventions are for the given functions,. A bit of interest reading, not particularly relevant to your Blitz knowledge- http://en.wikipedia.org/wiki/X86_calling_conventions |
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| 1. The argument after Extern tells the linker what libraries it should include to resolve external references. "C" -> Standard C-Libraries "Win32" -> Windows Subsystem ( user32, kernel32, ... ) ... 2. Yes, it's a type tag. $z -> C-String $w -> Unicode String Thanks! |
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