Managing bitmaps from WPF (ideas)

hi all of you,

I'm migrating a Windows Forms 2.0 applications and I was wondering how to do a bitmap manager inside the app.

The old app have a small designer where you can define sections using left, right and middle mouse buttons and then save it into a plain file:

And then I retrieve x and y coors from a plain file:

[AREA1];448;144;202;70
[AREA1];614;130;198;76
[AREA2];658;65;121;52
[AREA1];524;82;259;77

Does someone any idea about how to do that in WPF?

Thanks in advance for any hint or comment,

Primary platform is Windows 7 Ultimate 64 bit along with VS 2012/Sql2k8 for WPF/SilverLight projects.