rasdemo.cpp

WinCE 下的拨号程序

// RasDemo.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "resource.h"
#include "Ras.h"
#include "Raserror.h"
#include "RasStateMessage.h"


BOOL CALLBACK DialogProc(HWND, UINT, WPARAM, LPARAM);
void DoCommand(HWND, UINT, WPARAM, LPARAM);
DWORD DialRasNetwork(HWND);
void GetRasBookEntry();
LPRASDIALPARAMS GetRasDialParams(TCHAR* name);
void ParseRasDialEvent(HWND, WPARAM, LPARAM);
void UpdateRasStateInWindow(HWND hwnd, RASCONNSTATE state);
void UpdateButton(HWND, RASCONNSTATE);
void HangUpNetwork();

HRASCONN g_hRasConn;
HINSTANCE g_hInst;
RASCONNSTATE g_state = RASCS_Disconnected;

int WINAPI WinMain(	HINSTANCE hInstance,
					HINSTANCE hPrevInstance,
					LPTSTR    lpCmdLine,
					int       nCmdShow){
 	// TODO: Place code here.
	static TCHAR szAppName[] = TEXT ("RasDemostration");
	HWND hwnd;
	MSG  msg;

	g_hInst = hInstance;

	hwnd = CreateDialog(hInstance, MAKEINTRESOURCE(IDD_RASDEMO_DIALOG), NULL, DialogProc);

	while (GetMessage(&msg, NULL, 0, 0))
	{
		TranslateMessage (&msg) ;
        DispatchMessage (&msg) ;
    }
        
	return msg.wParam ;
}

BOOL CALLBACK DialogProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam){
	switch(message){
	case WM_INITDIALOG:
		ShowWindow(hwnd,SW_SHOW);
		break;

	case WM_COMMAND:
		DoCommand(hwnd, message, wParam, lParam);
		break;

	case WM_DESTROY:
		PostQuitMessage (0) ;
		break;

	case WM_RASDIALEVENT:
		ParseRasDialEvent(hwnd, wParam, lParam);
		break;
	}
	return DefWindowProc(hwnd, message, wParam, lParam);
}

void DoCommand(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam){
	switch ( LOWORD (wParam) ){
	case IDC_DIAL_RASNETWORK:
		if (g_state == RASCS_Disconnected){
			DialRasNetwork(hwnd);
		}else{
			HangUpNetwork();
		}
		break;
	}
}

DWORD DialRasNetwork(HWND hwnd){
	DWORD dwRet = 0;

	GetRasBookEntry();
	dwRet = RasDial(NULL, NULL,
		GetRasDialParams(TEXT("无线互联网")),0xFFFFFFFF,hwnd,&g_hRasConn);
	if (dwRet != ERROR_SUCCESS){
		// Something wrong, handle error
		dwRet = GetLastError();
	}
	return dwRet;
}

void GetRasBookEntry(){
	DWORD dwRet = 0, cb = 0, cEntries = 0;

	LPRASENTRYNAME lprasentryname = (LPRASENTRYNAME)LocalAlloc(LPTR, sizeof(RASENTRYNAME));
	lprasentryname->dwSize = sizeof(RASENTRYNAME);

	if ( (RasEnumEntries(NULL, NULL, lprasentryname, &cb, &cEntries)) == ERROR_BUFFER_TOO_SMALL){
		lprasentryname = (LPRASENTRYNAME)LocalAlloc(LPTR, cb);
		lprasentryname->dwSize = sizeof(RASENTRYNAME);
	}

	dwRet = RasEnumEntries(NULL, NULL, lprasentryname, &cb, &cEntries);
	if (dwRet != ERROR_SUCCESS){
		printf("RasEnumEntries failed: Error %d\n", dwRet);
	}

	for(DWORD i=0; i < cEntries; i++)
    {
		// Here you can get the name of a specific entry.
        printf("%s\n",lprasentryname->szEntryName);
        lprasentryname++;
    }
}

LPRASDIALPARAMS GetRasDialParams(TCHAR* name){
	BOOL passwordReturned = TRUE;
	LPRASDIALPARAMS pParam = (LPRASDIALPARAMS)LocalAlloc(LPTR,sizeof(RASDIALPARAMS));
	pParam->dwSize = sizeof(RASDIALPARAMS);
	wcscpy((TCHAR*)pParam->szEntryName, name);

	DWORD dwRet = RasGetEntryDialParams(NULL,pParam,&passwordReturned);
	if (dwRet != ERROR_SUCCESS){
		dwRet = GetLastError();
		// Something wrong occured here, handle the error as you want.
		return NULL;
	}
	return pParam;
}

void ParseRasDialEvent(HWND hwnd, WPARAM wParam, LPARAM lParam){
	RASCONNSTATE rasState = (RASCONNSTATE)wParam;

	g_state = rasState;

	DEBUGMSG(1,(TEXT("Ras Event %d\r\n"),rasState));

	UpdateButton(hwnd, g_state);

	DWORD dwErr = (DWORD)lParam;
	if (dwErr != 0){
		DEBUGMSG(1,(TEXT("Error code is %d\r\n"),lParam));
		UpdateRasStateInWindow(hwnd, (RASCONNSTATE)26);
	}

	UpdateRasStateInWindow(hwnd, rasState);
}

void UpdateRasStateInWindow(HWND hwnd, RASCONNSTATE state){
	TCHAR* szRasState = CRasStateMessage::GetRasStateString(g_hInst, state);
	if (szRasState == NULL){
		// no define string or event is not valid. 
		return;
	}

	HWND wndStateStr = GetDlgItem(hwnd,IDC_RAS_STATUS);
	if (wndStateStr == NULL){
		// This should not happen.
		return;
	}

	SetWindowText(wndStateStr,szRasState);
	LocalFree(szRasState);
}

void UpdateButton(HWND hwnd, RASCONNSTATE state){
	TCHAR szBtnCaption[MAX_PATH] = {0};
	HWND hwdBtn = GetDlgItem(hwnd,IDC_DIAL_RASNETWORK);

	if (state == RASCS_Disconnected){
		// TODO: Show Dial
		LoadString(g_hInst,IDS_STR_DIAL,szBtnCaption,MAX_PATH*sizeof(TCHAR));

	}else if (state == RASCS_Connected){
		// TODO: Show Hang up.
		LoadString(g_hInst,IDS_STR_HANGUP,szBtnCaption,MAX_PATH*sizeof(TCHAR));
	}else{
		// Disable button.
	}
	SetWindowText(hwdBtn,szBtnCaption);
}

void HangUpNetwork(){
	RasHangUp(g_hRasConn);
}