AT_IGGUI_IP_CONTRAST

This structure is used by the IG_gui_ip_contrast_dlg function to adjust the contrast of the image using different methods.

Declaration:

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typedef struct tag AT_IGGUI_IP_CONTRAST { DWORD cbSize; UINT uFlags; HIGEAR hIGear; HWND hWnd; LPCHAR lpszTitle; AT_RECT rc; UINT nContrastType; AT_MODE nMode; DOUBLE dblContrast; DOUBLE dblBrightness; DOUBLE dblGamma; AT_ERRCOUNT nErrCount; LPFNIGGUI_IP_UPDATE lpfnUpdateProc; }AT_IGGUI_IP_CONTRAST;

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typedef struct tag AT_IGGUI_IP_CONTRAST
{
        DWORD cbSize;
        UINT uFlags;
        HIGEAR hIGear;
        HWND hWnd;
        LPCHAR lpszTitle;
        AT_RECT rc;
        UINT nContrastType;
        AT_MODE nMode;
        DOUBLE dblContrast;
        DOUBLE dblBrightness;
        DOUBLE dblGamma;
        AT_ERRCOUNT nErrCount;
        LPFNIGGUI_IP_UPDATE lpfnUpdateProc;
}AT_IGGUI_IP_CONTRAST;

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 on which to operate.
nContrastType	UINT	A type of a contrast operation (see IG_IGGUI_IP_CONTRAST_ constants).
nMode	AT_MODE	IG_CONTRAST_PIXEL or IG_CONTRAST_PALETTE, indicating whether to adjust by altering the pixels themselves, or the palette.
dblContrast	DOUBLE	A value from -255.0 to +255.0, the adjustment in contrast.
dblBrightness	DOUBLE	A value from - 255.0 to +255.0, the adjustment in brightness.
dblGamma	DOUBLE	A value greater than 0.0. The normal range is from 0.75 to 3.0.
nErrCount	AT_ERRCOUNT	The number of ImageGear errors that occurred during this function call.
lpfnUpdateProc	LPFNIGGUI_IP_UPDATE	A pointer to the function that is called when the 'Apply' button is clicked.