i want use rc5(rich client 5) for create a app like paint(i need more sample codes)

hi, i want create a simple app like paint but i want use rc5 cairo and then i want these parameters :

1-can open a image size more than 7000 px in 7000px.
2-can zoom in or zoom out in it. (mouse wheel support)
3-can move in zoomed image like hand cursor
4-can draw rectangle or star or another png image on my master image
5-can draw text on my master image with custom size or font or color
6-can undo or redo
7-and finally can save image edtied in another place.

can u have a simple source code rc5 used to can use in my project
and my question is about each numbers.

for example :
about 1: can use these sizes(more than 7000 px width or height in rc5 ?) (can u send a sample code or source code to can use?)
about 2: how can zoom in or zoom out with rc5?(can u send a sample code or source code to can use?)
about 3: how can move like hand cursor in image zoomed?(can u send a sample code or source code to can use?)
about 4 : how can draw another image on my master image control?(can u send a sample code or source code to can use?)
about 5: how can draw text with customize color or font on my rc5control?(can u send a sample code or source code to can use?)
about 7-how can merge all layers or images mereged (can u send a sample code or source code to can use?)