Thread: GetPixel Problem

  1. #1
    Registered User
    Join Date
    Apr 2007

    GetPixel Problem

    PHP Code:
    HDC bitmapDC;
    HBITMAP bitmapHandle;
    COLORREF bmpSample;
    bitmapDC GetDC((HWND)bitmapHandle);
    bmpSample GetPixel(bitmapDC2331);
    cout << "aaa " << bmpSample << '\n'
    I get a 9 digit value for bmpSample lol.

  2. #2
    Guest Sebastiani's Avatar
    Join Date
    Aug 2001
    Waterloo, Texas
    this question belongs on the windows board...

    // bitmapDC = GetDC((HWND)bitmapHandle);

    first of all, why are you casting an HBITMAP to HWND? their completely incompatible types. you need to create a compatible device context with the one you'll be drawing to (in this case, the screen), then select the bitmap into it.

    HDC sdc = GetDC(NULL); // ie: the screen
    HDC cdc = CreateCompatibleDC(sdc);
    SelectObject(cdc, bmp);
    #include <cmath>
    #include <complex>
    bool euler_flip(bool value)
        return std::pow
            std::complex<float>(0, 1) 
            * std::complex<float>(std::atan(1.0)
            *(1 << (value + 2)))
        ).real() < 0;

  3. #3
    Super Moderator VirtualAce's Avatar
    Join Date
    Aug 2001
    Moved to the Windows board.

  4. #4
    Registered User Joelito's Avatar
    Join Date
    Mar 2005
    Tijuana, BC, México
    Maybe if you can put bitmapHandle in a static can use correctly GetPixel
    * PC: Intel Core 2 DUO E6550 @ 2.33 GHz with 2 GB RAM: Archlinux-i686 with xfce4.
    * Laptop: Intel Core 2 DUO T6600 @ 2.20 GHz with 4 GB RAM: Archlinux-x86-64 with xfce4.

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