[英]How to create a native C++ DLL that I can run with rundll32.exe without specifying an entry point
[英]How can I turn my program into a .dll file and run it in cmd using rundll32.exe?
我有一个程序可以创建多个线程并在循环中打印一些字符串。 我的任务是将这个程序变成 a.dll 并使用 rundll32.exe 运行它,但我不知道如何将 a.dll 作为可执行文件运行。
#define _CRT_SECURE_NO_WARNINGS
#include<windows.h>
#include <stdlib.h>
#include<process.h>
#include<stdio.h>
#include<string>
#include<ctime>
#include<vector>
#include<iostream>
typedef struct {
std::string info;
unsigned int m_number;
int m_stop_thread;
int m_priority_thread;
unsigned m_cycles;
unsigned m_currentThread;
}data;
HANDLE tmp;
unsigned int __stdcall Func(void* d) {
data* real = (data*)d;
std::cout << "\nCurrent thread ID: " << GetCurrentThreadId() << std::endl;
if (real->m_currentThread == real->m_priority_thread)
SetThreadPriority(tmp, 2);
std::cout << "Thread priority: " << GetThreadPriority(tmp) << std::endl;
for (int j = (real->m_currentThread - 1) * real->m_cycles / real->m_number;j < real->m_currentThread * real->m_cycles / real->m_number;j++) {
for (int i = 0;i < real->info.size();++i)
std::cout << real->info[i];
std::cout << std::endl;
}
return 0;
}
int main(int argc, char* argv[]) {
int threadsNumber, priority, stop;
std::string str;
std::cout << "Enter the info about a student:\n";
std::getline(std::cin, str);
std::cout << "Enter the number of threads:\n";
std::cin >> threadsNumber;
int cycles;
std::cout << "Enter the number of cycles:\n";
std::cin >> cycles;
std::cout << "Which thread priority do you want to change? ";
std::cin >> priority;
std::cout << "Which thread do you want to stop? ";
std::cin >> stop;
std::vector<HANDLE> threads;
data* args = new data;
args->info = str;
args->m_number = threadsNumber;
args->m_cycles = cycles;
args->m_priority_thread = priority;
args->m_stop_thread = stop;
clock_t time = clock();
for (int i = 1;i <= threadsNumber;++i) {
args->m_currentThread = i;
tmp = (HANDLE)_beginthreadex(0, 0, &Func, args, 0, 0);
threads.push_back(tmp);
}
WaitForMultipleObjects(threads.size(), &threads.front(), TRUE, INFINITE);
time = clock() - time;
std::cout << "time: " << (double)time / CLOCKS_PER_SEC << "s" << std::endl << std::endl;
getchar();
return 0;
}
有谁知道如何将此代码放入 dll 并使用命令行运行它?
当你编译你的程序时,你在 Windows 中创建了一个叫做Portable Executable [PE]的东西。 共享该家族的文件包括.exe
、 .dll
、 .scr
,您可以通过在文本编辑器(例如记事本)中打开它们并查看文件是否以MZ
开头(这是 Mark Zbikowski 的签名)来识别它们。
简而言之, *.dll
或*.exe
没有太大区别,除了一些取决于版本的小块。 所以简而言之,当你编译它时,你正在制作一个“dll”。 但是,如果您希望将程序编译为dll
,这取决于您的编译器:
但我会小心部署此类文件,因为@Richard 很好地指出RunDll32已被弃用,但它仍用于某些编程语言库的齿轮中。 因此,如果您正在构建用于自测目的的东西,我会根据您的编译器推荐这 4 个选项。
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