Debugging a Running Process

To debug a process that is already running, the debugger should use DebugActiveProcess with the process identifier. To retrieve a list of process identifiers, use either the EnumProcesses or Process32First function.

DebugActiveProcess attaches the debugger to the active process. In this case, only the active process can be debugged; its child processes cannot. The debugger must have appropriate access to the executing process to use DebugActiveProcess. For more information about access rights, see Access Control.

After the debugger has either created or attached itself to the process it intends to debug, the system notifies the debugger of all debugging events that occur in the process, and, if specified, in any child processes. For more information about debugging events, see Debugging Events.

To detach from the process being debugged, the debugger should use the DebugActiveProcessStop function.

 

 

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