Debugger Interface

The Debugger object is used to interrogate and manipulate the state of the debugger and the program being debugged.

Namespace:  EnvDTE
Assembly:  EnvDTE (in EnvDTE.dll)

Syntax

'Declaration
<GuidAttribute("338FB9A0-BAE5-11D2-8AD1-00C04F79E479")> _
Public Interface Debugger

[GuidAttribute("338FB9A0-BAE5-11D2-8AD1-00C04F79E479")]
public interface Debugger

[GuidAttribute(L"338FB9A0-BAE5-11D2-8AD1-00C04F79E479")]
public interface class Debugger

[<GuidAttribute("338FB9A0-BAE5-11D2-8AD1-00C04F79E479")>]
type Debugger =  interface end

public interface Debugger

The Debugger type exposes the following members.

Properties

	Name	Description
	AllBreakpointsLastHit	Gets a collection of bound breakpoints that were last simultaneously hit.
	BreakpointLastHit	Gets the last breakpoint hit.
	Breakpoints	Gets a collection of breakpoints.
	CurrentMode	Gets the current mode of the debugger within the context of the integrated development environment (IDE).
	CurrentProcess	Sets or gets the active process.
	CurrentProgram	Sets or gets the active program.
	CurrentStackFrame	Sets or gets the current stack frame.
	CurrentThread	Sets or gets the current thread being debugged.
	DebuggedProcesses	Gets the list of processes currently being debugged.
	DTE	Gets the top-level extensibility object.
	HexDisplayMode	Gets or sets whether expressions are output in hexadecimal or decimal format.
	HexInputMode	Gets or sets whether expressions are evaluated in hexadecimal or decimal format.
	Languages	Gets a list of languages that the debugger supports.
	LastBreakReason	Gets the last reason that a program was broken. If the program is running it returns DBG_REASON_NONE.
	LocalProcesses	Gets the list of processes currently running on this machine.
	Parent	Gets the immediate parent object of a Debugger object.

Top

Methods

	Name	Description
	Break	Causes the given process to pause its execution so that its current state can be analyzed.
	DetachAll	Detaches from all attached programs.
	ExecuteStatement	Executes the specified statement. If the TreatAsExpression flag is true, then the string is interpreted as an expression, and output is sent to the Command Window.
	GetExpression	Evaluates an expression based on the current stack frame. If the expression can be parsed but not evaluated, an object is returned but will not contain a valid value.
	Go	Starts executing the program from the current statement.
	RunToCursor	Executes the program to the current position of the source file cursor.
	SetNextStatement	Sets the next instruction to be executed, according to the cursor position in the current source file.
	StepInto	Steps into the next function call, if possible.
	StepOut	Steps out of the current function.
	StepOver	Steps over the next function call.
	Stop	Stops debugging, terminating, or detaching from all attached processes.
	TerminateAll	Terminates all processes.

Top

Remarks

The debugger is available through the DTE object by way of its Debugger property, as shown in the example below. One debugger object is available for each instance of the development environment.

Examples

The following example demonstrates how to use Debugger object.

Imports EnvDTE
Imports System.Diagnostics

Public Module Module1
    ' This function returns true if the debugger is actively debugging.

    Function IsDebugging() As Boolean
        Dim debugger As EnvDTE.Debugger
        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 small 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 "dte.olb" raw_interfaces_only named_guids

using namespace EnvDTE;

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(&pDebugger)) && pDebugger != NULL){
                dbgDebugMode mode;
                if (SUCCEEDED(pDebugger->get_CurrentMode(&mode))) {
                    if (mode != dbgDesignMode) {
                        printf("Debugger is active.\n");
                        nRet = 1;
                    }
                    else {
                        printf("Debugger is not active.\n");
                    }
                }
            }
        }
    }

    CoUninitialize();

    return nRet;
}

See Also

Reference

EnvDTE Namespace

Other Resources

Automation Object Model Chart

Debugging in Visual Studio