derelict-sdl2 automatically stripping the SDL_ prefix from names

[ProgramGamer via Digitalmars-d-learn]

Hi,

I attempted to use a combination of traits and mixins to 
automatically create aliases of names in SDL2 without the SDL_ 
prefix for convenience. However, I was only able to achieve this 
for functions in the module, and not for types nor enum values. 
How could I go about achieving the desired result? Here is the 
code I'm using in an intermediate "sdl_stripped" module:

import std.regex;
import std.array;
public import derelict.sdl2.sdl;

string StripSDLPrefix() {
    auto members = [__traits(allMembers, derelict.sdl2.internal)];
    foreach(ref member; members) {
        if (member.length > 4 && member[0..4] == "SDL_") {
            member = "alias " ~ member[4..$] ~ " = " ~ member ~ 
";\n";
        }
        else {
            member = "";
        }
    }
    return members.join();
}

mixin(StripSDLPrefix());

// I added this to print the list of generated names for 
debugging purposes.
static if (false) {
    pragma(msg, StripSDLPrefix());
}