#include "BIFILTER.H"
HANDLE CALLBACK FilterPosterizing( HDIB hDIB,
int iLevels,
int iShowProgress,
HWND hParent))
Description
This function will posterize the input image to reduce the color levels of the image. Posterizing is a linear quantification of the color values to the specified number of levels. This function works for only 8 bit per pixel and 24 bit per pixel images.
Examples
The original 180 x 210 pixel image and the posterized image to 2 color levels.
Parameters
|
HDIB |
hDIB |
Handle of the DIB to filter. |
|
int |
iLevels |
The desired number of color levels of the output image. |
|
int |
iShowProgress |
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 filtering. DISPLAY_PROGRESS (1) -The progressbar will display during filtering procedure. DISPLAY_DIALOG (2) - The preview dialog will display before filtering. This dialog shows the part of the image before and after filtering. DISPLAY_BOTH (3) - The progressbar and the preview dialog will display. IMPORTANT: The preview dialog will only display, if there is BiDlgs.dll installed. |
|
HWND |
hParent |
Handler of the parent window. |
Return values
The handle of the new filtered DIB or NULL if an error occurred.
Programming notes
The function will not free the input DIB.
Requirements
Header : Declared in BIFilter.h; include BIFilter.h.
Library : Use BIFilter.lib.
DLLs : BIFilter.dll.