如何获取程序当前执行路径？

因在 ocx 控件中获取执行路径指向的地方不是我需要的地方，故采取获取自身加载的模块路径作为当前程序的执行路径，同时 dll 放在和 ocx 同级目录下。

#include <windows.h>
#include <iostream>
#include <string>
#include <fstream>
#include <sstream>
#include <iomanip>
#include <vector>
#pragma execution_character_set("UTF-8")

std::string W2A(const std::wstring & utf8)
{
	int buffSize = WideCharToMultiByte(CP_ACP, NULL, utf8.c_str(), -1, NULL, NULL, NULL, FALSE);
	char *gbk = new char[buffSize + 1];
	memset(gbk, 0, buffSize + 1);
	WideCharToMultiByte(CP_ACP, NULL, utf8.c_str(), -1, gbk, buffSize, NULL, FALSE);
	std::string result(gbk);
	delete[] gbk;
	gbk = nullptr;
	return result;
}

#if 0
extern "C"  __declspec(dllexport) const char* __stdcall W2AEx(wchar_t* utf8)
{
	return W2A(utf8).c_str();
}
#endif

std::wstring A2W(const std::string & gbk)
{
	int buffSize = MultiByteToWideChar(CP_ACP, NULL, gbk.c_str(), -1, NULL, NULL);
	wchar_t* utf8 = new wchar_t[buffSize + 2];
	memset(utf8, 0, buffSize + 2);
	MultiByteToWideChar(CP_ACP, NULL, gbk.c_str(), -1, utf8, buffSize);
	std::wstring result(utf8);
	delete[] utf8;
	utf8 = nullptr;
	return result;
}

#if 0
extern "C"  __declspec(dllexport) const wchar_t* __stdcall A2WEx(char* gbk)
{
	return A2W(gbk).c_str();
}
#endif

char result[MAX_PATH];
extern "C"  __declspec(dllexport) const char* __stdcall OfSelfMoudulPath(char* dynamicLibrary)
{
	wchar_t buffer[MAX_PATH] = { 0 };
	GetModuleFileName(GetModuleHandle(A2W(dynamicLibrary).c_str()),buffer, MAX_PATH);
	std::string::size_type pos = W2A(buffer).find_last_of("\\/");
	std::string path = W2A(buffer).substr(0, pos);
	//return (path.c_str());
	memset(result, 0, MAX_PATH);
	strcpy_s(result, path.c_str());
	return result;
}

#if 0
std::string HexDump(char * buff, int len)
{
	std::stringstream save;
	for (unsigned char i = 0; i < len; i++)
	{
		//44 03 00 d1 56 00 00 05 00 16 60 4a 38 08 81 8e
		//44 03 00 D1 56 00 00 05 00 16 60 4A 38 08 81 8E
		save << std::uppercase << std::setfill('0') << std::setw(2) << std::hex << ((*(buff + i)) & 0xff);
	}
	//std::cout << save.str() << std::endl;
	return save.str();
}

extern "C"  __declspec(dllexport) const char* __stdcall HexDumpEx(char* buff, int len)
{
	return HexDump(buff, len).c_str();
}

std::string DeleteChar(const char * buff, int size, unsigned char code)
{
	std::vector<char> temp;
	//char temp[1024] = { 0 };
	int j = 0;
	for (int i = 0; i < size; i++)
	{
		if (*(buff + i) != code)
		{
			temp.push_back(*(buff + i));
			//temp[j] = *(buff + i);
			j++;
		}
	}
	temp.push_back(0);
	return std::string(temp.data());
}

extern "C"  __declspec(dllexport) const char* __stdcall DeleteCharEx(const char * buff, int size, unsigned char code)
{
	return DeleteChar(buff, size, code).c_str();
}
#endif