Calling a function using its pointer-

From: Samie (samiehg_at_hotmail.com)
Date: 08/31/04 

Date: 31 Aug 2004 12:03:44 -0700

Hi
I have declared a structure that contains pointer to a function. The
code goes like this:
typedef struct lcd_funs lcd_funs;
struct lcd_funs {
void (*decode_image)(cyg_uint32 imageWidth,
                        cyg_uint32 imageHeight,
                        Palette_element *paletteData,
                        cyg_uint8 *imageData,
                        cyg_uint16 bitsPerPixel
                        );
};

Now, suppose, I have a variable funs that is pointer to a structure of
this type. When I try to call this function using the code below, it
hangs up. Any idea why it is happening like this? The code used to
call it as follows:
(funs->decode_image)(ptrConfigOptions->imageWidth,
                       ptrConfigOptions->imageHeight,
                       ptrConfigOptions->paletteData,
                       ptrConfigOptions->imageData,
                       ptrConfigOptions->bitsPerPixel
                       );
Is it the right way to call functions using their pointers that are
members of a structure?

Regards
Samie

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