http://www.developer.com/ws/pc/article.php/2213761
Codeguru has published a new article about using InkX control in your programs. It explains how to collect user's handwritten input, store it, and redisplay it later when needed. It also gives you a sample application illustrating the techniques discussed in the article.
When I last looked through this article it seemed to be somewhat incomplete. Hopefully Codeguru will fix this issue soon.
If you simply wish to collect handwritten input, store it, and redisplay it, the RichInk control makes inking data fairly easy to acquire and handle. Though details differ among the CE platforms, the basic strategy is consistent:
* Include inkx.lib in the linker specification of your project settings
* Load the common controls
* Specifically initialize the ink control
* Communicate with the control using the messages IM_GETDATALEN, IM_GETDATA and IM_SETDATA