[Issue 2580] New: Documented WinMain for D2 is wrong

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=2580

           Summary: Documented WinMain for D2 is wrong
           Product: D
           Version: 2.023
          Platform: PC
               URL: http://www.digitalmars.com/d/2.0/windows.html
        OS/Version: Windows
            Status: NEW
          Keywords: spec
          Severity: critical
          Priority: P2
         Component: www.digitalmars.com
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: smjg at iname.com


Currently, the form of WinMain documented for D2 is the same as that for D1. 
However, it's no good.  _moduleUnitTests() doesn't exist in D2 for a start; a
more subtle yet more serious problem is that it doesn't initialise the GC
properly.

After a day or three of driving myself mad trying to figure why one of my apps
was unstable under D2, I've finally come up with a form for WinMain that seems
to work:

----------
import std.c.windows.windows;
import core.runtime;

extern (Windows)
int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
      LPSTR lpCmdLine, int nCmdShow) {
    try {
        Runtime.initialize();
        runModuleUnitTests();

        return myWinMain(hInstance, hPrevInstance, lpCmdLine, nCmdShow);

    } catch (Object o) {
        MessageBoxA(null, toStringz(o.toString()),
          "Fatal Internal Error", MB_OK | MB_ICONEXCLAMATION);
        return 0;

    } finally {
        Runtime.terminate();
    }
}


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