IG_GUI_palette_CB

IG_GUI_palette_CB_register

In This Topic

This function registers a callback function to be called whenever the user has changed a palette entry in the palette window.

Declaration:

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AT_ERRCOUNT ACCUAPI IG_GUI_palette_CB_register ( HWND hWndPalette, LPFNIG_GUIPALETTE lpfnPalette, LPVOID lpPrivate );

Arguments:

Name	Type	Description
hWndPalette	HWND	Handle of Palette window.
lpfnPalette	LPFNIG_GUIPALETTE	Far pointer to Palette callback function; called when palette changes.
lpPrivate	LPVOID	Far pointer to private data area (passed to callback function).

Return Value:

Returns the number of ImageGear errors that occurred during this function call.

Supported Raster Image Formats:

This function does not process image pixels.

Sample:

Palette Edit

Example:

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LPFNIG_GUIPALETTE MyPaletteCBFunc; /* Declare type of callback func / HWND hWndPalette; / Global Palette window handle / { static char cPrivate[200]; / Private data area / ... IG_GUI_palette_CB_register(hWndPalette, MyPaletteCBFunc, (LPVOID) &cPrivate); / See also the example under LPFNIG_GUIPALETTE */ ... }

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LPFNIG_GUIPALETTE        MyPaletteCBFunc;  /* Declare type of callback func */
HWND    hWndPalette;     /* Global Palette window handle   */
{
static char cPrivate[200];    /* Private data area   */
 ...
IG_GUI_palette_CB_register(hWndPalette, MyPaletteCBFunc, (LPVOID) &cPrivate);
/* See also the example under LPFNIG_GUIPALETTE */
 ...
}

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