set_change_palette_hook

["Surya Kiran Gullapalli" <suryakiran gullapalli gmail com>]

Hi,
I've a colorselection widget, the palette, i can show and hide using set_has_palette() function. But if i show the palette, the colors in the palette are predetermined. I want to have the palette, with those 20 colors in the palette of my choice. 

I was looking at the documentation which can do this and came across set_change_palette_hook. I really do not know whether this is the function to achieve my objective, but started looking at it anyway. This function happened to be a static member function. I've used this function in my code, but it does not seem to be working. 

Two questions, based on whether i can achieve my objective with this function. Yes or No? 

1. If Yes, how?
2. If No, what is the function i've to look at?

Thanks in advance.
Surya