ImageGear for C and C++ on Windows v19.6 - Updated
IG_gui_fx_chroma_key_dlg
API Reference Guide > GUI Component API Reference > GUI Component Functions Reference > Image Processing Effects Functions > IG_gui_fx_chroma_key_dlg

This function shows the dialog that allows you to blend two images.

Declaration:

 
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BOOL ACCUAPI IG_gui_fx_chroma_key_dlg (
        HWND hWnd, 
        LPAT_IGGUI_FX_CHROMA_KEY lpFxChromaKeyData
);

Arguments:

Name Type Description
hWnd HWND A handle of the parent window.
lpFxChromaKeyData LPAT_IGGUI_FX_CHROMA_KEY A pointer to the AT_IGGUI_FX_CHROMA_KEY structure.

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 – 1 bpp;
Grayscale – 1 bpp.

Sample:

Image Processing

Example:

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