关于拨号RasDial函数的设置问题??

yhsoft 2001-02-25 01:26:00

以下是RasDial函数的定义:

DWORD RasDial(
LPRASDIALEXTENSIONS lpRasDialExtensions,
// pointer to function extensions data
LPCTSTR lpszPhonebook, // pointer to full path and filename of
// phone-book file
LPRASDIALPARAMS lpRasDialParams,
// pointer to calling parameters data
DWORD dwNotifierType, // specifies type of RasDial event handler
LPVOID lpvNotifier, // specifies a handler for RasDial events
LPHRASCONN lphRasConn // pointer to variable to receive
// connection handle
)

其中的lpvNotifier参数如何填写?

回调函数RasDialFunc或RasDialFunc1如何在自己的程序中定义和添加?

希望有高手指点!

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zhq2000 2001-02-25

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the code from MSDN:

// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
//
// Copyright (C) 1993-1997 Microsoft Corporation. All Rights Reserved.
//
// MODULE: dialdlg.c
//
// PURPOSE: Displays the "DialDlg" dialog box
//
// FUNCTIONS:
// DialDlg - Processes messages for "DialDlg" dialog box.
// MsgDialDlgInit - To initialize the dialdlg box and make the
// RasDial call.
// MsgDialDlgEvent - Process WM_RASDIALEVENT message.
// MsgDialDlgCommand - Process WM_COMMAND message.
// CmdDialDlgCancel - Free the dialdlg box and related data.
// RasDialFunc - RasDial callback function for Win32.
//
// COMMENTS:
// Dialog box to display status of connection attempt
//
//

#include <windows.h> // required for all Windows applications
#include <windowsx.h>
#ifdef WIN16
#include "win16ext.h" // required only for win16 applications
#endif
#include "globals.h" // prototypes specific to this application
#include <ras.h>
#include <raserror.h>
#include "rasutil.h"
#include "dialdlg.h"
#include "phbkdlg.h"

LRESULT MsgDialDlgInit(HWND, UINT, WPARAM, LPARAM);
LRESULT MsgDialDlgEvent(HWND, UINT, WPARAM, LPARAM);
LRESULT MsgDialDlgCommand(HWND, UINT, WPARAM, LPARAM);
LRESULT CmdDialDlgCancel(HWND, WORD, WORD, HWND);

#ifdef WIN32
VOID WINAPI RasDialFunc( UINT unMsg, RASCONNSTATE rasconnstate, DWORD dwError );
#endif

// DialDlg dialog message table definition.
MSD rgmsdDialDlg[] =
{
{WM_RASDIALEVENT, MsgDialDlgEvent},
{WM_COMMAND, MsgDialDlgCommand},
{WM_INITDIALOG, MsgDialDlgInit}
};

MSDI msdiDialDlg =
{
sizeof(rgmsdDialDlg) / sizeof(MSD),
rgmsdDialDlg,
edwpNone
};

// DialDlg dialog command table definition.
CMD rgcmdDialDlg[] =
{
{IDCANCEL, CmdDialDlgCancel}
};

CMDI cmdiDialDlg =
{
sizeof(rgcmdDialDlg) / sizeof(CMD),
rgcmdDialDlg,
edwpNone
};

// Module specific "globals" Used when a variable needs to be
// accessed in more than on handler function.
HRASCONN hRasConn;

#ifdef WIN32
HWND g_hDlg;
#endif

//
// FUNCTION: DialDlg(HWND, UINT, WPARAM, LPARAM)
//
// PURPOSE: Processes messages for "DialDlg" dialog box.
//
// PARAMETERS:
// hdlg - window handle of the dialog box
// wMessage - type of message
// wparam - message-specific information
// lparam - message-specific information
//
// RETURN VALUE:
// TRUE - message handled
// FALSE - message not handled
//
// COMMENTS:
//
//

LRESULT CALLBACK DialDlg(HWND hdlg, UINT uMessage, WPARAM wparam, LPARAM lparam)
{
return DispMessage(&msdiDialDlg, hdlg, uMessage, wparam, lparam);
}

//
// FUNCTION: MsgDialDlgInit(HWND, UINT, WPARAM, LPARAM)
//
// PURPOSE: To initialize the dialdlg box and dial
//
// PARAMETERS:
// hwnd - The window handing the message.
// uMessage - WM_INITDLG.
// wparam - Message specific data (unused).
// lparam - Message specific data (unused).
//
// RETURN VALUE:
// Always returns TRUE - message handled.
//
// COMMENTS:
// Registers window message for RAS event.
// Makes call to RasDial with appropriate params.
//

LRESULT MsgDialDlgInit(HWND hdlg, UINT uMessage, WPARAM wparam, LPARAM lparam)
{
RASDIALPARAMS rdParams;
char szEntry[RAS_MaxEntryName+1];
DWORD dwRet;
char szBuf[256];
HWND hwndEntry;
UINT ndx;

hwndEntry = GetDlgItem( GetParent(hdlg), IDL_ENTRY);
ndx = (UINT) SendMessage( hwndEntry, LB_GETCURSEL, 0, 0L );
SendMessage( hwndEntry, LB_GETTEXT, ndx, (LPARAM)(LPSTR)szEntry );
wsprintf( (LPSTR) szBuf, "Dialing %s...", (LPSTR) szEntry );
SetWindowText( hdlg, (LPSTR)szBuf );

// setup RAS Dial Parameters
rdParams.dwSize = sizeof(RASDIALPARAMS);
lstrcpy(rdParams.szEntryName, szEntry );
rdParams.szPhoneNumber[0] = '\0';
rdParams.szCallbackNumber[0] = '*';
rdParams.szCallbackNumber[0] = '\0';

if ( g_bUseCurrent )
{
rdParams.szUserName[0] = '\0';
rdParams.szPassword[0] = '\0';
rdParams.szDomain[0] = '*';
rdParams.szDomain[1] = '\0';
}
else
{
lstrcpy(rdParams.szUserName, g_szUserName );
lstrcpy(rdParams.szPassword, g_szPassword );
lstrcpy(rdParams.szDomain, g_szDomain );
}

hRasConn = NULL;

#ifdef WIN16
rgmsdDialDlg[0].uMessage = RegisterWindowMessage(RASDIALEVENT);
dwRet = RasDial( NULL, NULL, &rdParams, NULL, hdlg, &hRasConn );
#else
g_hDlg = hdlg;
dwRet = RasDial( NULL, NULL, &rdParams, 0L, (RASDIALFUNC) RasDialFunc, &hRasConn );
#endif

if ( dwRet )
{
if ( RasGetErrorString( (UINT)dwRet, (LPSTR)szBuf, 256 ) != 0 )
wsprintf( (LPSTR)szBuf, "Undefined RAS Dial Error (%ld).", dwRet );

MessageBox(hdlg, (LPSTR)szBuf, szAppName, MB_OK | MB_ICONSTOP );
EndDialog(hdlg, FALSE);
return TRUE;
}
// Center the dialog over the application window
CenterWindow(hdlg, GetWindow(hdlg, GW_OWNER));

return TRUE;
}

//
// FUNCTION: MsgDialDlgEvent(HWND, UINT, WPARAM, LPARAM)
//
// PURPOSE: To display messages during dialdlg
//
// PARAMETERS:
// hwnd - The window handing the message.
// uMessage - WM_RASDIALEVENT.
// wparam - Message specific data (unused).
// lparam - Message specific data (unused).
//
// RETURN VALUE:
// Always returns TRUE - message handled.
//
// COMMENTS:
// Updates the text of IDT_MESSAGE to indicate the current
// state in the connection. The dialog is closed upon
// connect or disconnect status.
//

LRESULT MsgDialDlgEvent(HWND hdlg, UINT uMessage, WPARAM wparam, LPARAM lparam)
{
char szMessage[256];

LoadString(hInst, GetRasConnState( (RASCONNSTATE) wparam ), szMessage, 64 );
SetDlgItemText( hdlg, IDT_MESSAGE, (LPCSTR) szMessage );

if ( lparam ) // error occurred
{
if ( RasGetErrorString( (UINT)lparam, szMessage, 256 ) != 0 )
wsprintf( (LPSTR)szMessage, "Undefined RAS Dial Error." );

MessageBox(hdlg, (LPSTR)szMessage, szAppName, MB_OK | MB_ICONSTOP );
PostMessage( hdlg, WM_COMMAND, (WPARAM) IDCANCEL, 0L );
}
else if ( RASCS_DONE & wparam )
{
EndDialog(hdlg, TRUE); // Exit the dialog
}

return TRUE;
}

//
// FUNCTION: MsgDialDlgCommand(HWND, UINT, WPARAM, LPARAM)
//
// PURPOSE: Process WM_COMMAND message sent to the dialdlg box.
//
// PARAMETERS:
// hwnd - The window handing the message.
// uMessage - The message number. (unused).
// wparam - Message specific data (unused).
// lparam - Message specific data (unused).
//
// RETURN VALUE:
// Always returns TRUE - message handled.
//
// COMMENTS:
// Uses this DispCommand function defined in wndproc.c combined
// with the cmdiDialDlg structure defined in this file to handle
// the command messages for the dialdlg dialog box.
//

LRESULT MsgDialDlgCommand(HWND hwnd,
UINT uMessage,
WPARAM wparam,
LPARAM lparam)
{
return DispCommand(&cmdiDialDlg, hwnd, wparam, lparam);
}

//
// FUNCTION: CmdDialDlgCancel(HWND, WORD, WORD, HWND)
//
// PURPOSE: Free the dialdlg box and related data.
//
// PARAMETERS:
// hwnd - The window handling the command.
// wCommand - IDCANCEL.
// wNotify - The notification to be handled (unused).
// hwndCtrl - NULL (unused).
//
// RETURN VALUE:
// Always returns TRUE.
//
// COMMENTS:
// Closes current connection attempt and calls EndDialog
// to finish the dialog session.
//

LRESULT CmdDialDlgCancel(HWND hdlg, WORD wCommand, WORD wNotify, HWND hwndCtrl)
{
RasHangUp( hRasConn );
EndDialog(hdlg, FALSE); // Exit the dialog
return TRUE;
}

#ifdef WIN32
// FUNCTION: RasDialFunc( UINT, RASCONNSTATE, DWORD )
//
// PURPOSE: Called by RasDial, passes params onto dialog box
//
// PARAMETERS:
// unMsg - Yype of RAS event that occurred.
// rasconnstate - Connection state about to be entered.
// dwError - Error code that may have occurred.
//
// COMMENTS:
// appropriate action is taken in the WM_RASDIALMESSAGE handler

VOID WINAPI RasDialFunc( UINT unMsg, RASCONNSTATE rasconnstate, DWORD dwError )
{
PostMessage( g_hDlg,
rgmsdDialDlg[0].uMessage,
(WPARAM) rasconnstate,
(LPARAM) dwError );

}

#endif

zhq2000 2001-02-25

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