Qt调用最新的HP-Socket实现UDP客户端的步骤,列出所有代码
时间: 2023-06-16 17:04:29 浏览: 109
以下是使用最新的HP-Socket在Qt中实现UDP客户端的步骤和代码:
1. 下载最新的HP-Socket库,并将其添加到Qt项目中。
2. 在Qt项目中创建一个UDP客户端类。例如,可以创建一个名为UdpClient的类。
3. 在UdpClient类的头文件中添加以下内容:
```cpp
#ifndef UDPCLIENT_H
#define UDPCLIENT_H
#include "HPTypeDef.h"
#include "HPSocket4C-SSL.h"
#include <QObject>
class UdpClient : public QObject
{
Q_OBJECT
public:
explicit UdpClient(QObject *parent = nullptr);
~UdpClient();
bool Start(LPCTSTR lpszRemoteAddress, USHORT usPort);
void Stop();
signals:
void DataReceived(QString data);
private:
static EnHandleResult __stdcall OnReceive(IN IUdpClient* pSender, LPCTSTR lpszRemoteAddress, USHORT usRemotePort, const BYTE* pData, int iLength);
static EnHandleResult __stdcall OnClose(IN IUdpClient* pSender);
private:
IUdpClient* m_pClient;
};
#endif // UDPCLIENT_H
```
4. 在UdpClient类的实现文件中添加以下内容:
```cpp
#include "UdpClient.h"
UdpClient::UdpClient(QObject *parent) : QObject(parent)
{
m_pClient = nullptr;
}
UdpClient::~UdpClient()
{
Stop();
}
bool UdpClient::Start(LPCTSTR lpszRemoteAddress, USHORT usPort)
{
m_pClient = Create_HP_UdpClientListener((HP_UdpClientListener_Event_Callback)&UdpClient::OnReceive,
(HP_UdpClientListener_Event_Callback)&UdpClient::OnClose);
if (m_pClient == nullptr)
{
return false;
}
if (!m_pClient->Start(lpszRemoteAddress, usPort))
{
Destroy_HP_UdpClientListener(m_pClient);
m_pClient = nullptr;
return false;
}
return true;
}
void UdpClient::Stop()
{
if (m_pClient != nullptr)
{
m_pClient->Stop();
Destroy_HP_UdpClientListener(m_pClient);
m_pClient = nullptr;
}
}
EnHandleResult UdpClient::OnReceive(IN IUdpClient* pSender, LPCTSTR lpszRemoteAddress, USHORT usRemotePort, const BYTE* pData, int iLength)
{
QString data = QString::fromUtf8((const char*)pData, iLength);
emit ((UdpClient*)pSender->GetExtra())->DataReceived(data);
return HR_OK;
}
EnHandleResult UdpClient::OnClose(IN IUdpClient* pSender)
{
return HR_OK;
}
```
5. 在Qt主程序中创建一个UdpClient对象,并使用Start方法启动UDP客户端。例如:
```cpp
#include <QCoreApplication>
#include "UdpClient.h"
int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
UdpClient client;
if (client.Start(_T("127.0.0.1"), 5555))
{
QObject::connect(&client, &UdpClient::DataReceived, [&](QString data){
qDebug() << data;
});
}
return a.exec();
}
```
这将启动一个UDP客户端,连接到本地主机的5555端口,并在收到数据时打印出数据。
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