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我正在查看.dll文件,我了解它们的用法,我正在尝试了解如何使用它们.

我创建了一个.dll文件,其中包含一个返回名为funci()的整数的函数

使用此代码,我(想)我已将.dll文件导入项目(没有投诉):

#include <windows.h>
#include <iostream>

int main() {
  HINSTANCE hGetProcIDDLL = LoadLibrary("C:\\Documents and Settings\\User\\Desktop  \\fgfdg\\dgdg\\test.dll");

  if (hGetProcIDDLL == NULL) {
    std::cout << "cannot locate the .dll file" << std::endl;
  } else {
    std::cout << "it has been called" << std::endl;
    return -1;
  }

  int a = funci();

  return a;
}

# funci function 

int funci() {
  return 40;
}

但是,当我尝试编译我认为已导入.dll的.cpp文件时,我遇到以下错误:

C:\Documents and Settings\User\Desktop\fgfdg\onemore.cpp||In function 'int main()':|
C:\Documents and Settings\User\Desktop\fgfdg\onemore.cpp|16|error: 'funci' was not     declared in this scope|
||=== Build …