Removing Duplicates from STL Vector

#include <vector>
#include <algorithm>
using namespace std;
// Add this header files


vector<CString> vNames;   
vector<CString> ::iterator vItr;
CString csName;

vNames.push_back("John");
vNames.push_back("Victor");
vNames.push_back("Nancy");   
vNames.push_back("William");
vNames.push_back("Nancy");
sort(vNames.begin(),vNames.end());
vNames.erase(unique(vNames.begin(),vNames.end()),vNames.end());   

for(vItr=vNames.begin();vItr!=vNames.end();vItr++)
{
    csName=(*vItr);
    //TRACE(csName);
    //AfxMessageBox(csName);
}

ExtractIcon of other application

The ExtractIcon function retrieves a handle to an icon from the specified executable file, DLL, or icon file.

HICON hIcon;
hIcon = ExtractIcon( AfxGetApp()->m_hInstance, "C:\\WINDOWS\\system32\\calc.exe", 0 );
SetIcon( hIcon, FALSE );

//You must destroy the icon handle returned by ExtractIcon by calling the DestroyIcon //function.
DestroyIcon(hIcon);

Change or Hide Start button name windows XP




void ChangeOrHideStartButton()
{
     HWND hSysTrayWnd = ::FindWindow( "Shell_TrayWnd", 0 ); 
     if( hSysTrayWnd ) 
     { 
          // Get the start button  
          HWND hStartBtn = ::FindWindowEx( hSysTrayWnd, 0, "Button", "Start" ); 
          if( hStartBtn ) 
          { 
               // Hide the start button if shown or show if hidden  
               if( ::IsWindowVisible( hStartBtn )) 
               { 
                    ::ShowWindow( hStartBtn, SW_HIDE ); 
               } 
               else 
               { 
                    ::ShowWindow( hStartBtn, SW_SHOW ); 
                    //To change name
                    ::SetWindowText(hStartBtn,"Your Name");
               } 
          }

     } 
}

To Read all section and keys in an Ini File




void ReadSectionsAndKeys(CString csPath)
{
    char lpszReturnBuffer[MAX_PATH];
    char* pNextSection = NULL;
    GetPrivateProfileSectionNames(lpszReturnBuffer,MAX_PATH,csPath);
    pNextSection = lpszReturnBuffer;
    //TRACE("Section: %s\n", pNextSection);   
    //printf("Section: %s\n", pNextSection);   
    // for keys
    int nPos=-1;
    char lpszKeyNames[8192];
    DWORD dSize;
    dSize = sizeof(lpszKeyNames);
    CString csNameandValue(""), csKey(""),csValue("");
    //

    while (*pNextSection != 0x00)
    {
         GetPrivateProfileSection( pNextSection, lpszKeyNames , dSize , csPath );
         char *pKeyName = lpszKeyNames;  

         while (*pKeyName != 0x00)
         {
              nPos = -1;
              if(*pKeyName != 0x00)
              {
                   //TRACE("Keys: %s\n", pKeyName);
                   csNameandValue = pKeyName;
                   if((nPos = csNameandValue.Find("=")) > -1)
                   {  
                        csKey = csNameandValue.Left(nPos);
                        csValue=csNameandValue.Mid(nPos+1);                  
                   }
              }
              pKeyName = pKeyName + strlen(pKeyName) + 1;
         }  
         pNextSection = pNextSection + strlen(pNextSection) + 1;
         if(*pNextSection != 0x00)
         {
              //TRACE("Section: %s\n", pNextSection);
         }
    }
}

Get the User App Data Directory

#include <shlobj.h>

char path[_MAX_PATH];

//Get the User App Data Directory
SHGetFolderPath(NULL,CSIDL_LOCAL_APPDATA,NULL,0,path);

//Get the Common App Data Directory
SHGetFolderPath(NULL,CSIDL_COMMON_APPDATA,NULL,0,path);

To Close SDI/MDI Application Programmatically

AfxGetMainWnd()->PostMessage(WM_CLOSE);

To lock your machine programmatically

To lock your machine programmatically you can use the API LockWorkStation().

Syntax
C++

BOOL WINAPI LockWorkStation(void);


//Code:
if( !LockWorkStation())
{
// Failed to lock the machine
}

This function has the same result as pressing Ctrl+Alt+Del and clicking Lock Workstation. To unlock the workstation, the user must log in. There is no function you can call to determine whether the workstation is locked.