Undefined Reference, linker error

I am an absolute beginner. This is my first C++ code. Taking from the default project in Dev C++, youtube tutorials, and some intuition, I came up with the simple code below. I know the answer is going to be easy. I just can't seem to paste together answers from other posts the fix for mine. I know this is an easy fix for a person with any experience coding. Any help you provide is GREATLY appreciated!!!

I get "undefined reference to CreateProcessWithLogonW" error.

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#include <windows.h>


/*  Declare Windows procedure  */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);

HWND textfield;


/*  Make the class name into a global variable  */
char szClassName[ ] = "WindowsApp";

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 = GetSysColorBrush (COLOR_3DFACE);

    /* 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 */
           "Files open on Mars",/* Title Text */
           WS_SYSMENU, /* default window */
           CW_USEDEFAULT,       /* Windows decides the position */
           CW_USEDEFAULT,       /* where the window ends up on the screen */
           444,                 /* The programs width */
           175,                 /* 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;
}


/*  This function is called by the Windows function DispatchMessage()  */

LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)                  /* handle the messages */
    {
           
           case WM_CREATE:
                
                CreateWindow(TEXT("button"), TEXT("Open files"),
                WS_VISIBLE | WS_CHILD,
                10,10,80,25,
                hwnd, (HMENU) 1, NULL, NULL
                );
                
            textfield = CreateWindow("STATIC",
            "Please click the button to retrieve a list of open files on server",
            WS_VISIBLE | WS_CHILD,
            10,50,400,25,            hwnd, NULL, NULL, NULL);     
            
             textfield = CreateWindow("STATIC",
            "Message at bottom of box",
            WS_VISIBLE | WS_CHILD,
            10,120,400,25,            hwnd, NULL, NULL, NULL);  
                
                break;
                
           case WM_COMMAND:
                
                if (LOWORD(wParam) == 1) {
                 
                 
                 CreateProcessWithLogonW(L"me", L"company", L"xxxxxx", 0, 0, L"c:\\files.cmd", 0, NULL, NULL, NULL, NULL);           
                 MessageBox(hwnd, "A text file with all of the open files has been placed on your desktop", "Open Files", MB_OK | MB_ICONINFORMATION);
                   
                }
                
                
                
                break;
                     
        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;
}
This is winapi and should be posted in the windows section.
Last edited on
My apologies. I assumed that it was still a beginners question.
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