Create independent process in Win API

winapi_create_detached_proc.cpp

#include <Windows.h>
#include <cstdio>

void MsgBoxLastError()
{
	LPWSTR lpMsgBuf = NULL;
	if (FormatMessage(
		FORMAT_MESSAGE_ALLOCATE_BUFFER |
		FORMAT_MESSAGE_FROM_SYSTEM |
		FORMAT_MESSAGE_IGNORE_INSERTS,
		NULL,
		GetLastError(),
		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
		(LPWSTR)&lpMsgBuf,
		0, NULL) != 0)
	{
		MessageBox(NULL, lpMsgBuf, L"Error", MB_OK);
	}
	LocalFree(lpMsgBuf);
}

int main(int argc, char* argv[])
{
	const WCHAR pathToApp[] = L"C:/Program Files (x86)/Internet Explorer/iexplore.exe";
	const WCHAR pathToFile[] = L"file://C:/Users/galar/Desktop/test.pdf";
	WCHAR fullCommandLine[MAX_PATH] = { 0 };
	swprintf_s(fullCommandLine, L"\"%s\" \"%s\"", pathToApp, pathToFile);

	STARTUPINFO info = { sizeof(info) };
	PROCESS_INFORMATION processInfo;
	if (CreateProcess(NULL, fullCommandLine, NULL, NULL, TRUE, 0, NULL, NULL, &info, &processInfo)) {
		CloseHandle(processInfo.hProcess); 
		CloseHandle(processInfo.hThread);
	} else {
		MsgBoxLastError();
	}
	return 0;
}