This function shows the dialog that allows you to reduce the number of actual colors in the image by creating a "staircase" in the palette.

Declaration:

BOOL ACCUAPI IG_gui_fx_posterize_dlg (
        HWND hWnd, 
        LPAT_IGGUI_FX_POSTERIZE lpFxPosterizeData
);

Arguments:

Return Value:

If the user specifies parameters and clicks the OK button, the return value is non-zero. If the user cancels or closes the dialog box or an error occurs, the return value is zero.

Supported Raster Image Formats:

All pixel formats supported by ImageGear for C and C++, except:
Indexed RGB with non-grayscale palette.
Images that have a Grayscale LUT attached to them.

Sample:

Image Processing

Example:

#include "IG_gui_common.h"
AT_IGGUI_FX_POSTERIZE FxPosterize;
FxPosterize.cbSize = sizeof (FxPosterize);
FxPosterize.hWnd = hWnd;
FxPosterize.hIGear = hIGear;
FxPosterize.uFlags |= IG_IGGUI_FX_SETUP_EMPTY_RECT;
if (IG_gui_fx_posterize_dlg (hWnd, &FxPosterize))
{
InvalidateRect(hWnd, NULL, FALSE);
        UpdateWindow(hWnd);
}