<GuidAttribute("87DFC8DA-67B4-4954-BB89-6A277A50BAFC")> _
Public Interface Debugger3 _
    Implements Debugger2

Dim instance As Debugger3

[GuidAttribute("87DFC8DA-67B4-4954-BB89-6A277A50BAFC")]
public interface Debugger3 : Debugger2

[GuidAttribute(L"87DFC8DA-67B4-4954-BB89-6A277A50BAFC")]
public interface class Debugger3 : Debugger2

public interface Debugger3 extends Debugger2

Imports System
Imports EnvDTE
Imports EnvDTE90
Imports EnvDTE90
Imports System.Diagnostics

Public Module Module1
    'This function returns true if the debugger is actively debugging.
    Function IsDebugging() As Boolean
        Dim debugger As EnvDTE90.Debugger3
        debugger = DTE.Debugger
        If (debugger Is Nothing) Then
            MsgBox("Debugger doesn't exist! Fatal error.")
            IsDebugging = false
        Else
            IsDebugging = (debugger.CurrentMode <> _
            dbgDebugMode.dbgDesignMode)
        End If
    End Function
End Module

// The following C++ program can be run from the command line.
// It detects whether an instance of Visual Studio is currently 
// running,and if so, prints a message stating whether its debugger
// is actively debugging.

#include <stdio.h>
#import "dte90.olb" raw_interfaces_only named_guids
using namespace EnvDTE90;
int main(void)
{
    int nRet = 0;
    CoInitialize(NULL);
    IUnknownPtr pUnk;
    GetActiveObject(CLSID_DTE, NULL, &pUnk);
    if (pUnk == NULL) {
        printf ("No instance of Visual Studio is running.\n");
    }
    else {
        _DTEPtr pDTE = pUnk;
        if (pDTE) {
            DebuggerPtr pDebugger;
            if (SUCCEEDED(pDTE->get_Debugger(&pDebugger3)) && 
            pDebugger3
            != NULL){
                dbgDebugMode mode;
                if (SUCCEEDED(pDebugger3->get_CurrentMode(&mode))) {
                    if (mode != dbgDesignMode) {
                        printf("Debugger is active.\n");
                        nRet = 1;
                    }
                    else {
                        printf("Debugger is not active.\n");
                    }
                }
            }
        }
    }
    CoUninitialize();
    return nRet;
}