[SDL] How to integrate SDL as a child Window

[Edward Byard]

Well found! I will have a play with this later, but not sure how it'll do with Vista :-)



----- Original Message ----
From: L-28C <kixdemp at gmail.com>
To: sdl at libsdl.org
Sent: Thursday, 15 November, 2007 12:07:09 PM
Subject: Re: [SDL] How to integrate SDL as a child Window

Wow... I came here to ask that same question, and this was at the top
 of 
the list... What a coincidence. O_O

Anyway, Mr. Byard, you might be wrong:
http://www.polplex.co.uk/~tigger/sdl/

And I say "might" because I tried a modified (non-C++) version and it 
crashes after the first call to SDL_BlitSurface... Here's my code:

(Note that I did put error checks on stuff like SDL_CreateRGBSurface, I
 
just removed it to make the code shorter)

----------<code/>---------
    int bmsize;
    HDC dc = GetDC(g_WindowHandle);
    BITMAPINFO *bmi;
    BITMAPINFOHEADER bh;
    WNDCLASSEX wc;
    
    /* Create the window */
    
    wc.cbSize        = sizeof(WNDCLASSEX);
    wc.style         = 0;
    wc.lpfnWndProc   = WndProc;
    wc.cbClsExtra    = 0;
    wc.cbWndExtra    = 0;
    wc.hInstance     = a_hInstance;
    wc.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
    wc.hCursor       = LoadCursor(NULL, IDC_ARROW);
    wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
    wc.lpszMenuName  = NULL;
    wc.lpszClassName = "scorchWindowClass";
    wc.hIconSm       = LoadIcon(NULL, IDI_APPLICATION);
    
    g_WindowHandle = CreateWindowEx(
        WS_EX_CLIENTEDGE,
        "scorchWindowclass",
        "YASEC = Yet Another Scorched Earth Clone",
        WS_OVERLAPPEDWINDOW,
        CW_USEDEFAULT, CW_USEDEFAULT, a_Width, a_Height,
        NULL, NULL, a_hInstance, NULL);

    ShowWindow(g_WindowHandle, a_CmdShow);
    UpdateWindow(g_WindowHandle);

    /* Create the surface */
    g_Screen =
        SDL_CreateRGBSurface(SDL_SWSURFACE, a_Width, a_Height,
 SCR_DEPTH, 0, 
0, 0, 0);
    
    /* Get width and height */
    g_ScreenWidth = g_Screen->w;
    g_ScreenHeight = g_Screen->h;

    bmsize = sizeof(BITMAPINFO);
    
    if(g_Screen->format->palette)
    {
        bmsize += g_Screen->format->palette->ncolors *
            sizeof(RGBQUAD);
    }
    else
    {
        bmsize += 3*sizeof(DWORD);
    }

    bmi = (BITMAPINFO*)malloc(bmsize);
    /* Clear struct */
    memset((void*)&bh, 0, sizeof(BITMAPINFOHEADER));

    /* Initialize struct */
    bh.biSize = sizeof(BITMAPINFOHEADER);
    bh.biWidth = g_Screen->w;
    bh.biHeight = -g_Screen->h;    /* -ve for topdown bitmap */
    bh.biPlanes = 1;
    bh.biSizeImage = g_Screen->h * g_Screen->pitch;
    bh.biXPelsPerMeter = 0;
    bh.biYPelsPerMeter = 0;
    bh.biClrUsed = 0;
    bh.biClrImportant = 0;
    bh.biBitCount = g_Screen->format->BitsPerPixel;
    bh.biCompression = BI_BITFIELDS;

    bmi->bmiHeader=bh;

    ((Uint32*)bmi->bmiColors)[0] = g_Screen->format->Rmask;
    ((Uint32*)bmi->bmiColors)[1] = g_Screen->format->Gmask;
    ((Uint32*)bmi->bmiColors)[2] = g_Screen->format->Bmask;

    g_WindowBitmap = CreateDIBSection(dc, bmi, DIB_RGB_COLORS,
        (void **)(&g_Screen->pixels), NULL, 0);

    /* Free memory */
    free(bmi);
    ReleaseDC(g_WindowHandle, dc);
    
    return 0;
---------</code>----------

Any ideas? Thanks!

Edward Byard wrote:
> Short answer is; no.
> 
> It would be very useful but SDL 1.2 can't do this; fingers crossed
 for 
> 1.3....
> 
> ----- Original Message ----
> From: Mine <mine260309 at gmail.com>
> To: A list for developers using the SDL library. (includes
 SDL-announce) 
> <sdl at lists.libsdl.org>
> Sent: Thursday, 15 November, 2007 7:35:30 AM
> Subject: [SDL] How to integrate SDL as a child Window
> 
> Hi All,
>     I'm using SDL on Windows XP. And I want to use it as a child
 window 
> in my application.
>     There is a new window created by SetVideoMode, is there any way
 to 
> set it as my application's child window instead of a stand alone
 window? 
> That is to say, I want it to have no task bar, no title bar (this is
 OK 
> by SDL_NOFRAME), when the focus is in SDL window, the application's
 main 
> windows is also focused.
>     Is there a way to implement that?
> -- 
> Mine
> 
> 
>
 ------------------------------------------------------------------------
> For ideas on reducing your carbon footprint visit Yahoo! For Good 
> <http://uk.promotions.yahoo.com/forgood/environment.html> this month.
> 
> 
>
 ------------------------------------------------------------------------
> 
> _______________________________________________
> SDL mailing list
> SDL at lists.libsdl.org
> http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org

_______________________________________________
SDL mailing list
SDL at lists.libsdl.org
http://lists.libsdl.org/listinfo.cgi/sdl-libsdl.org






      ___________________________________________________________ 
Want ideas for reducing your carbon footprint? Visit Yahoo! For Good  http://uk.promotions.yahoo.com/forgood/environment.html
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.libsdl.org/pipermail/sdl-libsdl.org/attachments/20071115/29d7155e/attachment.html