ImageGear for C and C++ on Windows v19.10 - Updated
AT_IGGUI_FX_CHROMA_KEY
API Reference Guide > GUI Component API Reference > GUI Component Structures Reference > AT_IGGUI_FX_CHROMA_KEY

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

Declaration:

 
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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.