#include <windows.h>
 
#define ID_LIST 1
#define ID_TEXT 2
 
/*  Declare Windows procedure  */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
 
/*  Make the class name into a global variable  */
char szClassName[ ] = "ComboBox App";
 
int WINAPI WinMain (HINSTANCE hThisInstance,
                    HINSTANCE hPrevInstance,
                    LPSTR lpszArgument,
                    int nFunsterStil)
 
{
    HWND hwnd;               /* This is the handle for our window */
    MSG messages;            /* Here messages to the application are saved */
    WNDCLASSEX wincl;        /* Data structure for the windowclass */
 
    /* The Window structure */
    wincl.hInstance = hThisInstance;
    wincl.lpszClassName = szClassName;
    wincl.lpfnWndProc = WindowProcedure;      /* This function is called by windows */
    wincl.style = CS_DBLCLKS;                 /* Catch double-clicks */
    wincl.cbSize = sizeof (WNDCLASSEX);
 
    /* Use default icon and mouse-pointer */
    wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
    wincl.lpszMenuName = NULL;                 /* No menu */
    wincl.cbClsExtra = 0;                      /* No extra bytes after the window class */
    wincl.cbWndExtra = 0;                      /* structure or the window instance */
    /* Use Windows's default color as the background of the window */
    wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
 
    /* Register the window class, and if it fails quit the program */
    if (!RegisterClassEx (&wincl))
        return 0;
 
    /* The class is registered, let's create the program*/
    hwnd = CreateWindowEx (
           0,                   /* Extended possibilites for variation */
           szClassName,         /* Classname */
           "ComboBox App",       /* Title Text */
           WS_OVERLAPPEDWINDOW, /* default window */
           CW_USEDEFAULT,       /* Windows decides the position */
           CW_USEDEFAULT,       /* where the window ends up on the screen */
           544,                 /* The programs width */
           375,                 /* and height in pixels */
           HWND_DESKTOP,        /* The window is a child-window to desktop */
           NULL,                /* No menu */
           hThisInstance,       /* Program Instance handler */
           NULL                 /* No Window Creation data */
           );
 
    /* Make the window visible on the screen */
    ShowWindow (hwnd, nFunsterStil);
 
    /* Run the message loop. It will run until GetMessage() returns 0 */
    while (GetMessage (&messages, NULL, 0, 0))
    {
        /* Translate virtual-key messages into character messages */
        TranslateMessage(&messages);
        /* Send message to WindowProcedure */
        DispatchMessage(&messages);
    }
 
    /* The program return-value is 0 - The value that PostQuitMessage() gave */
    return messages.wParam;
}
 
 
//User Defined Function(s)
 
//Compare the efficiency of my C++ function vs. Charles Petzold's C function  
//Page #407
void FillListBox(HWND hwndList)
{
     TCHAR *pVarName[] = {"Item1", "Item2", "Item3", "Item4", "Item5"};
 
     for(int i=0; i<5; i++)
 
             SendMessage(hwndList, CB_ADDSTRING, 0, (LPARAM)pVarName[i]);
 
}
 
 
 
 
/*  This function is called by the Windows function DispatchMessage()  */
 
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    static HWND hwndList, hwndText;
    int iIndex, iLength, cxChar, cyChar;
    TCHAR pVarName[30];
 
 
 
    switch (message)                  /* handle the messages */
    {
 
        case WM_CREATE:
 
             cxChar = LOWORD(GetDialogBaseUnits());
             cyChar = HIWORD(GetDialogBaseUnits());
 
           //Create Display Window
           hwndText = CreateWindow(TEXT("static"),NULL, WS_CHILD | WS_VISIBLE |
                                   SS_LEFT, cxChar, cyChar, 
                                   GetSystemMetrics(SM_CXSCREEN), cyChar, 
                                   hwnd, (HMENU)ID_TEXT, 
                                   (HINSTANCE)GetWindowLong(hwnd, GWL_HINSTANCE), 
                                   NULL);
 
           //Create ComboBox
           hwndList =  CreateWindow(TEXT("Combobox"), NULL, WS_CHILD | WS_VISIBLE |
                                   LBS_STANDARD, cxChar, cyChar*3, 
                                   cxChar*16 + GetSystemMetrics(SM_CXVSCROLL), 
                                   cyChar*5, hwnd, (HMENU)ID_LIST, 
                                   (HINSTANCE)GetWindowLong(hwnd, GWL_HINSTANCE),
                                   NULL);
 
             //Populate ComboBox
             FillListBox(hwndList);
 
             //Set a Default Selection
             SendMessage(hwndList, CB_SETCURSEL, 0, 0);
             GetWindowText(hwndList, pVarName, 30);
             SetWindowText(hwndText, pVarName);
 
             return 0;
 
        case WM_COMMAND:
 
             if( LOWORD(wParam)==ID_LIST && HIWORD(wParam)==CBN_SELCHANGE)
             {
                 //Get Selection from Combo Box                 
                 GetWindowText(hwndList, pVarName, 30);      
 
                 //Show Text in Display Window
                 SetWindowText(hwndText, pVarName);
             }
 
             return 0;    
 
        case WM_DESTROY:
 
            PostQuitMessage (0);       /* send a WM_QUIT to the message queue */
            break;
 
        default: 
                                      /* for messages that we don't deal with */
            return DefWindowProc (hwnd, message, wParam, lParam);
    }
 
    return 0;
}

char *names[2];
names[0] = "Joe";
names[1] = "Billy";
names[2] = "Bob";
m_cPeople = names;

for (int i = 0, i <= 2, i++)
     m_cPeople.AddString( (LPCTSTR)names[i]);