将HINTERNET连接移出程序

Question

这是我的代码的缩短版本:

#include <iostream>
#include <urlmon.h>
#include <wininet.h>
#pragma comment(lib, "urlmon.lib")
#pragma comment(lib, "wininet.lib")
void data();
void test(std::string received) {
data();
Sleep(1);
}
void data() {
- >>HINTERNET connect = InternetOpen(L"MyBrowser", INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);
HINTERNET OpenAddress = InternetOpenUrl(connect, L"web page", NULL, 0, INTERNET_FLAG_PRAGMA_NOCACHE | INTERNET_FLAG_KEEP_CONNECTION, 0);
char dataReceived[5000];
std::string received;
DWORD NumberOfBytesRead = 0;
while (InternetReadFile(OpenAddress, dataReceived, 5000, &NumberOfBytesRead) && NumberOfBytesRead)
{
received += std::string(dataReceived);
}
- >>InternetCloseHandle(connect);
InternetCloseHandle(OpenAddress);
test(received);
}
int main() {
data();
}

请告诉我如何正常移动选定的行(->>)在函数外运行它们一次?

Answer 1

改变data()和test()以一个HINTERNET为参数，然后main()可以创建HINTERNET传入，例如:

#include <iostream>
#include <urlmon.h>
#include <wininet.h>
#pragma comment(lib, "urlmon.lib")
#pragma comment(lib, "wininet.lib")
void data(HINTERNET connect);
void test(HINTERNET connect, std::string received) {
data(connect);
Sleep(1);
}
void data(HINTERNET connect) {
HINTERNET OpenAddress = InternetOpenUrl(connect, L"web page", NULL, 0, INTERNET_FLAG_PRAGMA_NOCACHE | INTERNET_FLAG_KEEP_CONNECTION, 0);
char dataReceived[5000];
std::string received;
DWORD NumberOfBytesRead = 0;
while (InternetReadFile(OpenAddress, dataReceived, 5000, &NumberOfBytesRead) && NumberOfBytesRead)
{
received += std::string(dataReceived);
}
InternetCloseHandle(OpenAddress);
test(connect, received);
}
int main() {
HINTERNET connect = InternetOpen(L"MyBrowser", INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);
data(connect);
InternetCloseHandle(connect);
}