Re: Error execute MS function fputc()

[Steven Schveighoffer via Digitalmars-d-learn]

On 6/7/15 12:41 PM, MGW wrote:
Hi, everybody!
DMD32 D Compiler v2.067.0
I try to cause the fputc function from CrtDLL.DLL and I receive a
mistake. Why?

import core.runtime;     // Загрузка DLL Для Win
import std.stdio;        // writeln

version(Windows) {
     import std.c.windows.windows;  // GetProcAddress для Windows
}

alias extern (C) int function(int, FILE*)   t_fputc;  t_fputc ms_fputc;

int main(string[] args) {

version(Windows) {    auto libCrtDll = "CrtDll.dll";   }

     // Load CrtDLL.DLL MS Windows
     auto h = Runtime.loadLibrary(libCrtDll);
     // Find function fputc
     ms_fputc = cast(t_fputc)GetProcAddress(h, "fputc");

     import core.stdc.stdio: stdout;
     try {
         auto rez = ms_fputc('A' , core.stdc.stdio.stdout);
     }
     catch {
         writeln("Error execute MS function fputc();");
     }
     return 0;
}

DMD 32-bit does not use MSVC runtime, it uses DMC (Digital Mars C++ 
Compiler) runtime. So you cannot use MSVC versions of C runtime.

You can use Win32 system calls, though.

-Steve