ImageGear Professional DLL v18.1 for Windows
IG_GUI_palette_CB_register
Send Feedback
ImageGear Professional v18.1 > API Reference Guide > Core Component API Reference > Core Component Functions Reference > GUI Functions > GUI Palette Functions > IG_GUI_palette_CB_register

Glossary Item Box

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

Declaration:

  Copy Code
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:

  Copy Code
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 */
 ...
}
©2014. Accusoft Corporation. All Rights Reserved.