10 rules for using managed pointers in C#. Note the following points on managed pointers. Managed pointers cannot be null. It is not possible for a managed pointer to point to another managed pointer.

The C# programming language doesn’t allow you to work with pointers by default. You need to use the unsafe keyword to define an unsafe context and write code that uses pointers.

Reading through the PlatformSDK and the .NET Framework I have come to the conclusion that I will need to write unsafe C# code to access the RECT structure pointer in lParam.<br><br>First off, ...