Describes the AfxDebugBreak function, which you can use to hardcode breakpoints in source code.
The TRACE Macro
Discusses and provides examples of the ATLTRACE and MFC TRACE macros, which enable you to display messages from your program in the debugger Output window.
Detecting Memory Leaks in MFC
Provides links to MFC classes and functions that detect memory that is allocated but never deallocated. Links include: tracking memory allocations, enabling memory diagnostics, taking memory snapshots, viewing memory statistics, and object dumps.