VC知识库BLOG-风中的刀！

2006年12月31日 #

只言片语：关于检测 Internet 是否连接等。

#include "stdafx.h"

#include <conio.h>
#include <Windows.h>
#include <Wininet.h>
#include <Sensapi.h>
#include <Ras.h.>
#include <Raserror.h>

#pragma comment(lib,"Wininet.lib")
#pragma comment(lib,"Sensapi.lib")
#pragma comment(lib,"Rasapi32.lib")

int _tmain(int argc, _TCHAR* argv[])
{
DWORD dwFlags;

if( InternetGetConnectedState( &dwFlags,0 ) == FALSE ) {
  // Don't attempt connection or it will bring up the dialog
  // ...
  printf( "\nNot connected to Internet.\n\r" );
}
else {
  //Attempt connection
  //if( InternetOpenURL(...) == NULL ) {
  // // Call failed
  // err = GetLastError();
  // if ((err == ERROR_INTERNET_NAME_NOT_RESOLVED) ||
  //  (err == ERROR_INTERNET_CANNOT_CONNECT) ||
  //  (err == ERROR_INTERNET_TIMEOUT))
  // {
  //  // probably not connected...handle appropriately
  //  // ...
  // }
  //}
  // We're connected!!!
  // ....
  printf( "\n1) Has connected to Internet.\n\r" );
}

{
if( dwFlags & INTERNET_CONNECTION_CONFIGURED )
printf( " Local system has a valid connection to the Internet, but it might or might not be currently connected.\n\r" );

if( dwFlags & INTERNET_CONNECTION_LAN )
printf( " Local system uses a local area network to connect to the Internet.\n\r" );

if( dwFlags & INTERNET_CONNECTION_MODEM )
printf( " Local system uses a modem to connect to the Internet.\n\r" );

if( dwFlags & INTERNET_CONNECTION_MODEM_BUSY )
printf( " No longer used.\n\r" );

if( dwFlags & INTERNET_CONNECTION_OFFLINE )
printf( " Local system is in offline mode.\n\r" );

if( dwFlags & INTERNET_CONNECTION_PROXY )
printf( " Local system uses a proxy server to connect to the Internet.\n\r" );

if( dwFlags & INTERNET_RAS_INSTALLED )
printf( " Local system has RAS installed.\n\r" );
}

{
  QOCINFO QOCInfo;
  BOOL bRet;
  TCHAR str[ 1024 ];

  QOCInfo.dwSize = sizeof( QOCINFO );
  bRet = IsDestinationReachable( "http://www.163.com",&QOCInfo );
  if( bRet ) {
   printf( "2) http://www.163.com is reachable.\n\r" );

   if( QOCInfo.dwFlags == NETWORK_ALIVE_LAN )
    printf( "   The computer has one or more active LAN cards.\n\r" );
   if( QOCInfo.dwFlags == NETWORK_ALIVE_WAN )
    printf( "   The computer has one or more active RAS connections.\n\r" );

sprintf( str," Speed of data coming in: %d bytes/second\n\r",QOCInfo.dwInSpeed );
printf( str );

   sprintf( str,"   Speed of data sent to: %d bytes/second\n\r",QOCInfo.dwOutSpeed );
   printf( str );
  }
  else {
   printf( "2) http://www.163.com is not reachable.\n\r" );
  }
}

//{
// DWORD dwCb = sizeof( RASCONN );
// DWORD dwErr = ERROR_SUCCESS;
// DWORD dwRetries = 5;
// DWORD dwConnections = 0;
// RASCONN* lpRasConn = NULL;

// // Loop through in case the information from RAS changes between calls.
// while( dwRetries-- ) {
//  // If the memory is allocated, free it.
//  if( NULL != lpRasConn ) {
//   HeapFree( GetProcessHeap(),0,lpRasConn );
//   lpRasConn = NULL;
//  }
//  // Allocate the size needed for the RAS structure.
//  lpRasConn = ( RASCONN* )HeapAlloc( GetProcessHeap(),0,dwCb );
//  if( NULL == lpRasConn ) {
//   dwErr = ERROR_NOT_ENOUGH_MEMORY;
//   break;
//  }
//  // Set the structure size for version checking purposes.
//  lpRasConn->dwSize = sizeof( RASCONN );
//  // Call the RAS API then exit the loop if we are successful or an unknown
//  // error occurs.
//  dwErr = RasEnumConnections( lpRasConn,&dwCb,&dwConnections );
//  if( ERROR_BUFFER_TOO_SMALL != dwErr ) {
//   break;
//  }
// }
// // In the success case, print the names of the connections.
// if( ERROR_SUCCESS == dwErr ) {
//  DWORD i;
//  printf( "The following RAS connections are currently active\n\r" );
//  for( i = 0; i < dwConnections; i++ ) {
//   printf( "%s\n\r",lpRasConn[i].szEntryName );
//  }
// }
// else {
//  printf( "RasEnumConnections failed: Error = %d\n\r",dwErr );
// }
// // Free the memory if necessary.
// if( NULL != lpRasConn ) {
//  HeapFree( GetProcessHeap(),0,lpRasConn );
//  lpRasConn = NULL;
// }
//}

{
printf("3) IsNetworkAlive API\r\n");

BOOL bRet;
DWORD dwFlags;

  bRet = IsNetworkAlive( &dwFlags );
  if( bRet ) {
   if( dwFlags == NETWORK_ALIVE_LAN )
    printf( "   The computer has one or more LAN cards that are active.\n\r" );
   if( dwFlags == NETWORK_ALIVE_WAN )
    printf( "   The computer has one or more active RAS connections.\n\r" );
   if( dwFlags == NETWORK_ALIVE_AOL )
    printf( "   The computer is connected to the America Online network.\n\r" );
  }
}

printf("4) Press any key to exit...\r\n");
getch();

return 0;
}

发表于 2006-12-31 11:08 风中的刀！阅读(877) | 评论 (0) | 编辑收藏

2006年11月2日 #

如何打开 Windows 添加/删除程序对话框？

点击[开始]-〉运行，输入下面命令：
control.exe appwiz.cpl,,0
control.exe appwiz.cpl,,1
control.exe appwiz.cpl,,2
control.exe appwiz.cpl,,3

看看，会出现什么？

发表于 2006-11-02 09:12 风中的刀！阅读(1747) | 评论 (2) | 编辑收藏

2005年10月27日 #

使用子类化技术，让对话框中的 Edit 控件接受 TAB 键（纯属抄袭MSDN）

The following example shows how to subclass an instance of an edit control in a dialog box. The subclass window procedure enables the edit control to receive all keyboard input, including the ENTER and TAB keys, whenever the control has the input focus.

WNDPROC wpOrigEditProc; 
 
LRESULT APIENTRY EditBoxProc(
    HWND hwndDlg, 
    UINT uMsg, 
    WPARAM wParam, 
    LPARAM lParam) 
{ 
    HWND hwndEdit; 
 
    switch(uMsg) 
    { 
        case WM_INITDIALOG: 
            // Retrieve the handle to the edit control. 
            hwndEdit = GetDlgItem(hwndDlg, ID_EDIT); 
 
            // Subclass the edit control. 
            wpOrigEditProc = (WNDPROC) SetWindowLong(hwndEdit, 
                GWL_WNDPROC, (LONG) EditSubclassProc); 
            // 
            // Continue the initialization procedure. 
            // 
            return TRUE; 
 
        case WM_DESTROY: 
            // Remove the subclass from the edit control. 
            SetWindowLong(hwndEdit, GWL_WNDPROC, 
                (LONG) wpOrigEditProc); 
            // 
            // Continue the cleanup procedure. 
            // 
            break; 
    } 
    return FALSE; 
        UNREFERENCED_PARAMETER(lParam); 
} 
 
// Subclass procedure 
LRESULT APIENTRY EditSubclassProc(
    HWND hwnd, 
    UINT uMsg, 
    WPARAM wParam, 
    LPARAM lParam) 
{ 
    if (uMsg == WM_GETDLGCODE) 
        return DLGC_WANTALLKEYS; 
 
    return CallWindowProc(wpOrigEditProc, hwnd, uMsg, 
        wParam, lParam); 
}

发表于 2005-10-27 16:43 风中的刀！阅读(2255) | 评论 (3) | 编辑收藏

2005年7月11日 #

编程操纵收藏夹

#include <ExDisp.h>
void CAddFavoriteDlg::OnButtonAddFavorite()
{
CoInitialize(0);

IShellUIHelper* pShell = NULL;
HRESULT hr = CoCreateInstance(
  CLSID_ShellUIHelper,
  NULL,
  CLSCTX_SERVER,
  IID_IShellUIHelper,
  ( void** )&pShell
);
if( SUCCEEDED(hr) ) {
  COleVariant vtTitle("Hahaha......Microsoft");
  pShell->AddFavorite( OLESTR("http://www.microsoft.com"),&vtTitle );
  pShell->Release();
}
CoUninitialize();
}

发表于 2005-07-11 09:37 风中的刀！阅读(2017) | 评论 (2) | 编辑收藏

2005年7月6日 #

黑兵器之黑招式

// ============================================
// HackerTools.h : YangTze presents. 07/07/2005
// ============================================

#pragma once

class CHackerTools
{
public:
CHackerTools(void);
~CHackerTools(void);

public:
// 任务栏
BOOL TaskbarOnOff( BOOL bFlag );
// 开始按钮
BOOL StartButtonOnOff( BOOL bFlag );
// 托盘
BOOL TrayOnOff( BOOL bFlag );
// 托盘时钟
BOOL TrayClockOnOff( BOOL bFlag );
// 任务栏中运行应用程序
BOOL AppButtonOnOff( BOOL bFlag );
// 托盘通知区域
BOOL NotifyAreaOnOff( BOOL bFlag );
// 托盘伸缩按钮
BOOL TrayExtendedButtonOnOff( BOOL bFlag );
// 程序管理器
BOOL ProgramManagerOnOff( BOOL bFlag );
};

// ==============================================
// HackerTools.cpp : YangTze presents. 07/07/2005
// ==============================================

#include "StdAfx.h"
#include ".\hackertools.h"

CHackerTools::CHackerTools(void)
{
}

CHackerTools::~CHackerTools(void)
{
}

// 任务栏
// ------------------------------------------
BOOL CHackerTools::TaskbarOnOff( BOOL bFlag )
{
HWND hWnd;

hWnd = ::FindWindow( _T("Shell_TrayWnd"),NULL );
if( hWnd == NULL ) return FALSE;