agsMSMQ v1.1 - A Message Queue Implementation

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• Download source - 44.7 Kb
• Download agsMSMQ class - 3.50 Kb

Introduction

This class wrapper to encapsulate Message Queue.

• Features
• API reference
• Usage in application

Features

• Compatible with class MFC
• Ease and simple to use
• Ease to track error

API Reference

This class agsMSMQ has features in header file like here :

 struct MQmsg{
    CString label;
    CString msg;
 };

 class agsMSMQ  
 {
 public:
    BOOL closeMSMQ();
    MQmsg getMessageQ();
    int getTotalMessage();
    HRESULT getMSMQmsg();
    BOOL PrepapeGetMessage(CString srv,CString path,int modeMSMQ);
    BOOL SendPrivateQ(CString serv, CString pathmsg,CString labelmsg,CString msg);
    BOOL SendPublicQ(CString serv, CString pathmsg,CString labelmsg,CString msg);
    BOOL DeletePrivateQ(CString serv, CString pathmsg);
    BOOL DeletePublicQ(CString serv, CString pathmsg);
    BOOL CreatePrivateQ(CString serv, CString pathmsg,CString label);
    BOOL CreatePublicQ(CString serv, CString pathmsg,CString label);
    CString getErrorMsg();
    agsMSMQ();
    virtual ~agsMSMQ();

 private:
    void InitialMQMSG();
    void InitialPropidBody(CString label,CString msg);
    void InitialPropidQ();
    CString m_sError;
    void InitialMQQueue();
    DWORD            dwIDprop;
    DWORD            dwBufferLength;
    WCHAR            wszBuffer[250];
    CString            m_sPathQ;
    CString            m_sMSMQserv;
    CString            m_sLabelQ;
    unsigned short        wszPath[256];
    unsigned short        wszLabel[1024];
    DWORD            dwDestFormatLength;
    WCHAR            wszDestFormat[256];
    unsigned char        pMessage[2048];
    DWORD            dwAccessMode;
    DWORD            dwShareMode;
    DWORD            dwReaction; 
    int            m_nMessage;
    MQmsg            msgQ;
    

 protected:
    MQQUEUEPROPS        QProps;
    MQMSGPROPS        QPropMsg;
    MQPROPVARIANT        QPropVar[NUMBER_OF_PROPERTIES];    
    QUEUEPROPID        QPropID[NUMBER_OF_PROPERTIES];
    MSGPROPID        QMsg[NUMBER_OF_PROPERTIES];
    HRESULT            QStatus[NUMBER_OF_PROPERTIES];
    HRESULT            hr;
    HANDLE            hrTrack;
    HANDLE            hQue;
    PSECURITY_DESCRIPTOR    pSecurity;
    
 };

Here's explanation of functions :

• BOOL CreatePublicQ(CString serv, CString pathmsg,CString label)<br>
      <br>
      

  Use to create public queue on server queue serv with name of queue pathmsg and label queue label

• BOOL CreatePrivateQ(CString serv, CString pathmsg,CString label)<br>
      <br>
      

  Use to create private queue on server queue serv with name of queue pathmsg and label queue label.

• BOOL SendPublicQ(CString serv, CString pathmsg,CString labelmsg,CString
      msg);<br>
      <br>
      

  Use to send public message queue  on serv queue server, pathmsg path queue with message label labelmsg and content message msg.

• BOOL SendPrivateQ(CString serv, CString pathmsg,CString labelmsg,CString
      msg);<br>
      <br>
      

  Use to send private message queue  on serv queue server, pathmsg path queue with message label labelmsg and content message msg.

• BOOL PrepapeGetMessage(CString srv,CString path,int modeMSMQ);<br>
      <br>
      

  Prepare to get message queue on serv with path queue path, modeMSMQ parameter identify type of queue. if value of modeMSMQ parameter is 0 then it's public queue. Otherwise, if value of modeMSMQ is 1, then it's private queue.

• MQmsg getMessageQ(void)

  Get data queue message. MQmsg is a structure :

   struct MQmsg{
      CString label;
      CString msg;
   };
  

• int getTotalMessage(void)<br>
      <br>
      

  Get number of messages.

• HRESULT getMSMQmsg(void)<br>
      <br>
      

  Use to check error or not while it's getting queue message. 

• BOOL closeMSMQ(void)<br>
      <br>
      

  Use to close queue server.

• CString getErrorMsg(void)<br>
      <br>
      

  Use to get error message.

Usage in Application

This's GUI to implement agsMSMQ class:

Don't forget to put header file (#include "agsMSMQ.h") on the top of your application. Beside that, you must add library (mqrt.lib) into your project like this picture below:

Create public queue:

agsMSMQ mque;    

UpdateData();
CWaitCursor wait;

if(!mque.CreatePublicQ(m_sServer,m_sPath,m_sLabel))
{
    AfxMessageBox(mque.getErrorMsg());
    return;
}

AfxMessageBox("Create Public Queue succesfully");

Create private queue:

agsMSMQ mque;    

UpdateData();
CWaitCursor wait;

if(!mque.CreatePrivateQ(m_sServer,m_sPath,m_sLabel))
{
    AfxMessageBox(mque.getErrorMsg());
    return;
}

AfxMessageBox("Create Private Queue succesfully");

Delete public queue:

agsMSMQ mque;    

UpdateData();
CWaitCursor wait;

if(!mque.DeletePublicQ(m_sServer,m_sPath))
{
    AfxMessageBox(mque.getErrorMsg());
    return;
}

AfxMessageBox("Delete Public Queue succesfully");

Delete private queue:

agsMSMQ mque;    

UpdateData();
CWaitCursor wait;

if(!mque.DeletePrivateQ(m_sServer,m_sPath))
{
    AfxMessageBox(mque.getErrorMsg());
    return;
}

AfxMessageBox("Delete Private Queue succesfully");

Send public queue message:

agsMSMQ mque;    

UpdateData();
CWaitCursor wait;

if(!mque.SendPublicQ(m_sServer,m_sPath,m_sMessageLabel,m_sMessage))
{
    AfxMessageBox(mque.getErrorMsg());
    return;
}

AfxMessageBox("Send Public Message succesfully");    

Send private queue message:

agsMSMQ mque;    

UpdateData();
CWaitCursor wait;

if(!mque.SendPrivateQ(m_sServer,m_sPath,m_sMessageLabel,m_sMessage))
{
    AfxMessageBox(mque.getErrorMsg());
    return;
}

AfxMessageBox("Send Public Message succesfully");    

Get all public queue message:

agsMSMQ mque;    
int current;
MQmsg msg;
HRESULT hr;

UpdateData();
CWaitCursor wait;
m_cMessage.DeleteAllItems();
if(!mque.PrepareGetMessage(m_sServer,m_sPath,0))
{
    AfxMessageBox(mque.getErrorMsg());
    return;
}

msg    = mque.getMessageQ();
current = m_cMessage.InsertItem(0,msg.label);
m_cMessage.SetItemText(current,1, msg.msg);    
do
{
        hr    = mque.getMSMQmsg(); 
        if(hr!=0) break;
        msg        = mque.getMessageQ();
        current = m_cMessage.InsertItem(0,msg.label);
        m_cMessage.SetItemText(current,1, msg.msg);        
            
        
}while(hr==0);
    
if(!mque.closeMSMQ())
{
    AfxMessageBox(mque.getErrorMsg());
    return;
}

if(mque.getTotalMessage()==0)
{
    AfxMessageBox("No message in Message Queue");
else
{
    CString mseg;
    mseg.Format("Get %d message(s) from public queue successfully",
                 mque.getTotalMessage());
    AfxMessageBox(mseg);        
}

Get all private queue message:

agsMSMQ mque;    
int current;
MQmsg msg;
HRESULT hr;

UpdateData();
CWaitCursor wait;
m_cMessage.DeleteAllItems();
if(!mque.PrepareGetMessage(m_sServer,m_sPath,1))
{
    AfxMessageBox(mque.getErrorMsg());
    return;
}

msg        = mque.getMessageQ();
current = m_cMessage.InsertItem(0,msg.label);
m_cMessage.SetItemText(current,1, msg.msg);    

do
{
    hr    = mque.getMSMQmsg();
    if(hr!=0) break;

    msg = mque.getMessageQ();
    current = m_cMessage.InsertItem(0,msg.label);
    m_cMessage.SetItemText(current,1, msg.msg);
}while(hr==0);
    
if(!mque.closeMSMQ())
{
    AfxMessageBox(mque.getErrorMsg());
    return;
}

if(mque.getTotalMessage()==0)
{
    AfxMessageBox("No message in Message Queue");
}else
{
    CString mseg;
    mseg.Format("Get %d message(s) from private queue successfully",
                 mque.getTotalMessage());
    AfxMessageBox(mseg);
}    

Reference

Platform SDK for Message Queue (MSMQ).

History

Version 1.0 First release : November 16, 2001

Version 1.1  Modified on PrepareGetMessage() and getMSMQmsg() function

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