Description This method creates negatives from the source image. The result is put to a newly created DIB and the source DIB is unmodified. It works with 1, 4, 8 or 24 bits/pixel. In case of 24 bits/pixel, the operation is made separately on the R, G, B channels. In case of 4 or 8 bits/pixel, the source DIB must contain grayscale image and the palette values in the source DIB must be monotone increasing.
Syntax lRet = [BIFilter.]HistDIBComplement Dib iShowProgress hWnd
Remarks lRet LONGLONG Handle of the newly created DIB on success or 0 on failure.
Dib LONGLONG Source DIB.
iShowProgress short This parameter specifies the displaying of the progressbar and the preview dialog.
Available values:
DISPLAY_NONE (0) - The progressbar and the preview dialog will not display before the conversion.
DISPLAY_PROGRESS (1) - The progressbar will display during the procedure.
DISPLAY_DIALOG (2) - The preview dialog will display before conversion. This dialog shows the part of the image before and after removing red eye.
DISPLAY_BOTH (3) - The progressbar and the preview dialog will display.
IMPORTANT: The preview dialog will only display, if there is BIDlgs32.dll installed.
hWnd LONGLONG Handler of the parent window.
Result pixel value = Maximum pixel value - Source pixel value. Maximum pixel values: 1 bits/pixel: 1, 4 bits/pixel: 15, 8 bits/pixel: 255, 24 bits/pixel: 255 for each channel. There are three channels on 24 bits/pixel (R, G, B).
See Also