// Link against sendas2.lib
#include <rsendas.h>
#include <rsendasmessage.h>

...

// 和SendAS服务建立链接
RSendAs saSrv;
saSrv.Connect();
CleanupClosePushL(saSrv);
        
// 创建你的短消息
RSendAsMessage msg;
msg.CreateL(saSrv, KSenduiMtmSmsUid);
CleanupClosePushL(message);
msg.AddRecipientL(aRecipientNumber,RSendAsMessage::ESendAsRecipientTo);        
msg.SetBodyTextL(aMessageText);

// 发送短消息
message.SendMessageAndCloseL();
        
// 清理
CleanupStack::Pop(&message);
CleanupStack::PopAndDestroy(&saSrv);