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");
               } 
          }

     } 
}

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);