[Linker error] undefined reference to `GetStockObject@4'

This is a discussion on [Linker error] undefined reference to `GetStockObject@4' within the Windows Programming forums, part of the Platform Specific Boards category; [Linker error] undefined reference to `GetStockObject@4' i'm confused y i'm getting this in these lines of code: Code: #include <windows.h> ...

  1. #1
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    [Linker error] undefined reference to `GetStockObject@4'

    [Linker error] undefined reference to `GetStockObject@4'

    i'm confused y i'm getting this in these lines of code:

    Code:
    #include <windows.h>
    
    LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
    
    int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                        PSTR szCmdLine, int iCmdShow)
    {
         static char szAppName[] = "HelloWin";
         HWND         hwnd ;
         MSG          msg ;
         WNDCLASS     wndclass ;
    
         wndclass.style         = CS_HREDRAW | CS_VREDRAW ;
         wndclass.lpfnWndProc   = WndProc ;
         wndclass.cbClsExtra    = 0 ;
         wndclass.cbWndExtra    = 0 ;
         wndclass.hInstance     = hInstance ;
         wndclass.hIcon         = LoadIcon (NULL, IDI_APPLICATION) ;
         wndclass.hCursor       = LoadCursor (NULL, IDC_ARROW) ;
         wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
         wndclass.lpszMenuName  = NULL ;
         wndclass.lpszClassName = szAppName ;
    
         if (!RegisterClass (&wndclass))
         {
              MessageBox (NULL, "Failed to initialise the Window Class!",
                          szAppName, MB_ICONERROR) ;
              return 0 ;
         }
    
         hwnd = CreateWindow (szAppName,                  // window class name
                              "The Hello Program",        // window caption
                              WS_OVERLAPPEDWINDOW,        // window style
                              CW_USEDEFAULT,              // initial x position
                              CW_USEDEFAULT,              // initial y position
                              CW_USEDEFAULT,              // initial x size
                              CW_USEDEFAULT,              // initial y size
                              NULL,                       // parent window handle
                              NULL,                       // window menu handle
                              hInstance,                  // program instance handle
                              NULL) ;                     // creation parameters
    
         ShowWindow (hwnd, iCmdShow) ;
         UpdateWindow (hwnd) ;
    
         while (GetMessage (&msg, NULL, 0, 0))
         {
              TranslateMessage (&msg) ;
              DispatchMessage (&msg) ;
         }
         return msg.wParam ;
    }
    
    LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
    {
         HDC         hdc ;
         PAINTSTRUCT ps ;
         RECT        rect ;
    
         switch (message)
         {
         case WM_CREATE:
              return 0 ;
    
         case WM_PAINT:
              hdc = BeginPaint (hwnd, &ps) ;
    
              GetClientRect (hwnd, &rect) ;
    
              DrawText (hdc, "Hello Windows!", -1, &rect,
                        DT_SINGLELINE | DT_CENTER | DT_VCENTER) ;
    
              EndPaint (hwnd, &ps) ;
              return 0 ;
    
         case WM_DESTROY:
              PostQuitMessage (0) ;
              return 0 ;
         }
         return DefWindowProc (hwnd, message, wParam, lParam) ;
    }

  2. #2
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    Link to Gdi32.lib ?
    "...the results are undefined, and we all know what "undefined" means: it means it works during development, it works during testing, and it blows up in your most important customers' faces." --Scott Meyers

  3. #3
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    srry for being such a noob, but how i do that><?

  4. #4
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    Depends on your compiler. If you are using Visual Studio look under Project->Settings->Link. Otherwise read through the documentation that came with the compiler or google.
    "...the results are undefined, and we all know what "undefined" means: it means it works during development, it works during testing, and it blows up in your most important customers' faces." --Scott Meyers

  5. #5
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    i use Dev-cpp

  6. #6
    Registered User Queatrix's Avatar
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    Project > Project Options > Parameters: -lgdi32

    Also, what version? And are you compiling a project or just a file? If you are doing a GUI project, Dev should link it for you.
    Last edited by Queatrix; 02-18-2006 at 03:01 PM.

  7. #7
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    Use Project!

    I had the same problem, but solved it by create new project (window application) and then copy all the code I had writen into the new project.
    I gues you can't create windows if you are writing the code in a simple source file.

  8. #8
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    These errors result when the Linker can't find one of the windows libraries. Generally there's a spot in your project options to list them, or a way to set a folder that will be searched for them.

    Looking at "GetStockObject" in the Windows SDK I see you need to add GDI32.LIB.

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