Need some advise on bitmaps

Hi

My name is ramesh and i am from singapore. I would like to ask
some advise about this Visual C++ project on bitmaps i'm undertaking

Using an Mdi application, I am suppossed to display a
bitmap from a file on one child window.

The application must be able
to manipulate the individual bits of the bitmap and display them on another child window.
Everytime i manipulate the original bitmap, say change the resolution,
a new window popps up with the changed bitmap. I should be able to view all bitmaps in the screen

Its something like when i open the bitmap, i can make some manipulations with an array on the bits
and a new say filtered image appears. I have already worked out my algorithm and just need to do the graphics interface

I have already succcessfully created a small program which displays
a bitmap on the screen but i have difficulty in refreshing the screen
whin i minimise my window. All my functions are called in MyappView.cpp file

However the most importantt question i want to ask is how do i manipulate individual bits of a
bitmap????????????. How do i automatically also create a new window to display this new bitmap.
Lastly how do i print the exact dimensions of the bitmap on a printer.

Thanks a million for any help. I am okay with visual C++ but dont know much about printing
and bitmaps... Links where ican find help would be wonderful as well. Deadline is 31 May.

ramesh
: )