GUI Question

i found something that works on a figure..now i wont that to work on my GUI.Especially i want it to work on a handle.axes1 on my GUI.

%%%%%%%%%%%%%%%%%%%%%%%%%%%
clf
clear all

figure;
%the mouse-click sets a flag for point aquisition
set(gcf,'windowbuttondownfcn','hit=1;');



%start looping and waiting for a mouse click
stopit=0;
while (stopit==0)

%check for valid object and chek for line 1
%and see if the mouse was clicked
if ~isempty(gco) & hit==1

%get the mouse position in graph units
mouse = get(gca,'currentpoint');

mouse
%wait for the next click
hit=0;
end

drawnow
end
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

now each time i click on the figure i get my cordinates on x and y. example:
mouse =

0.5288 0.5161 1.0000
0.5288 0.5161 0


What i want now is to do the same thing by clicking on GUI.I have a handle.axes1 on my gui that loads a picture and i want to take the pixel cordinates of that picture by clicking on it.

I will be very happy to get that.
Thanx