在C++下实现的程序拨号代码

最新推荐文章于 2025-08-20 16:15:10 发布

原创最新推荐文章于 2025-08-20 16:15:10 发布 · 758 阅读

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CC 4.0 BY-SA版权

文章标签：

#c++ #server #user #nokia #symbian #os

本文提供了一个Symbian OS C++环境下实现拨打电话功能的代码示例，介绍了如何创建连接到电话服务器、加载设备驱动、获取电话信息及线路，并通过这些信息建立呼叫。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

呵呵，下面是一段拨号代码（摘自Nokia的例子），代码虽然不多，但很多地方都值得学习，例如：对R类的使用，清理；server/client机制；参数传递机制；编码风格；注释风格等等自己体会吧。

在阅读代码之前请熟悉Symbian OS C++中的ETel结构，以及它的核心类RTelServer,RPhone,RLine,RCall.

下面是代码内容：

void DialNumberL(const TDesC& aPhoneNumber)

{

//Create a connection to the tel server
RTelServer server;
CleanupClosePushL(server);
User::LeaveIfError(server.Connect());

//Load in the phone device driver
User::LeaveIfError(server.LoadPhoneModule(KTsyName));

//Find the number of phones available from the tel server
TInt numberPhones;
User::LeaveIfError(server.EnumeratePhones(numberPhones));

//Check there are available phones
if (numberPhones < 1)
  {
  User::Leave(KErrNotFound);
  }

//Get info about the first available phone
RTelServer::TPhoneInfo info;
User::LeaveIfError(server.GetPhoneInfo(0, info));

//Use this info to open a connection to the phone, the phone is identified by its name
RPhone phone;
CleanupClosePushL(phone);
User::LeaveIfError(phone.Open(server, info.iName));

//Get info about the first line from the phone
RPhone::TLineInfo lineInfo;
User::LeaveIfError(phone.GetLineInfo(0, lineInfo));

//Use this to open a line
RLine line;
CleanupClosePushL(line);
User::LeaveIfError(line.Open(phone, lineInfo.iName));

//Open a new call on this line
TBuf <100> newCallName;
RCall call;
CleanupClosePushL(call);
User::LeaveIfError(call.OpenNewCall(line, newCallName));

//newCallName will now contain the name of the call
User::LeaveIfError(call.Dial(aPhoneNumber));

//Close the phone, line and call connections and remove them from the cleanup stack
//NOTE: This does not hang up the call
CleanupStack::PopAndDestroy(3);//phone, line, call

//Unload the phone device driver
User::LeaveIfError(server.UnloadPhoneModule(KTsyName));

//Close the connection to the tel server and remove it from the cleanup stack
CleanupStack::PopAndDestroy(&server);
} //