How Can I Debug Windows API Functions?
Updated: August, 2010
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If you want to debug a Windows API function with NT symbols loaded, you need to do the following.
To set a breakpoint on a Windows API function with NT symbols loaded
Enter the the function name along with the name of the DLL where the function resides. In 32-bit code, use the decorated form of the function name. To set a breakpoint on MessageBeep, for example, you must enter:
To obtain the decorated name, see Viewing Decorated Names..