ImageGear for C and C++ on Windows v21.0 - Updated
API Reference Guide / GUI Component API Reference / GUI Component Structures Reference / AT_IGGUI_FX_CHROMA_KEY
In This Topic
    AT_IGGUI_FX_CHROMA_KEY
    In This Topic

    This structure is used by the IG_gui_fx_chroma_key_dlg function to blend two images.

    Declaration:

     
    Copy Code
    typedef struct tagAT_IGGUI_FX_CHROMA_KEY
    {
            DWORD cbSize;
            UINT uFlags;
            HIGEAR hIGear;
            HWND hWnd;
            LPCHAR lpszTitle;
            AT_RECT rc;
            CHAR szBkFileName[_MAX_PATH];
            DOUBLE dblHueCenter;
            DOUBLE dblHueRange;
            UINT nSmooth;
            UINT nIntensity;
            AT_ERRCOUNT nErrCount;
            LPFNIGGUI_FX_UPDATE lpfnUpdateProc;
    }AT_IGGUI_FX_CHROMA_KEY;
    

    Members:

    Name Type Description
    cbSize DWORD Specifies the length, in bytes, of the structure.
    uFlags UINT A set of bit flags you can use to initialize the dialog box.
    hIGear HIGEAR A handle of an image.
    hWnd HWND A handle of the window to update.
    lpszTitle LPCHAR A dialog title.
    rc AT_RECT An AT_RECT struct specifying the rectangular portion of the image to be processed.
    szBkFileName CHAR[_MAX_PATH] A file name of the image from which to insert the hue match.
    dblHueCenter DOUBLE An angle in degrees (in the standard Color Wheel) of the hue to match. 0.0 - 360.0 (360 == 0).
    dblHueRange DOUBLE The range to allow (in degrees) on either side. 0.0 - 360.0.
    nSmooth UINT An integer from 0 to 25 specifying how much to smooth the transition. 0 gives the sharpest edge.
    nIntensity UINT An intensity below which to ignore hue, and fail the match (0 - 255).
    nErrCount AT_ERRCOUNT The number of ImageGear errors that occurred during this function call.
    lpfnUpdateProc LPFNIGGUI_FX_UPDATE A pointer to the function that is called when the 'Apply' button is clicked.