如何为Visual Studio 2012调试器编写自定义的本地可视化DLL？

本文介绍了如何为Visual Studio 2012调试器编写自定义的本地可视化DLL？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！问题描述在Visual Studio 2012调试器的C ++中编写自定义本地可视化DLL需要什么？我想显示一个只能从类/结构按需计算的值，因此需要一个本地可视化DLL。 Visual Studio 2012使用一种新方法来实现名为Natvis的本机可视化。在这个时候，关于Natvis的信息很少，特别是使用Natvis调用visualizer DLL。该DLL将基于类/结构成员值计算显示字符串。解决方案这是包含AddIn DLL的C ++代码。我命名文件NatvisAddIn.cpp，项目创建了NatvisAddIn.dll。 #includestdafx.h #include< iostream> #include< windows.h> #define ADDIN_API __declspec（dllexport） typedef struct tagDEBUGHELPER { DWORD dwVersion; HRESULT（WINAPI * ReadDebuggeeMemory）（struct tagDEBUGHELPER * pThis，DWORD dwAddr，DWORD nWant，VOID * pWhere，DWORD * nGot）; //从这里只有当dwVersion> = 0x20000 DWORDLONG（WINAPI * GetRealAddress）（struct tagDEBUGHELPER * pThis）; HRESULT（WINAPI * ReadDebuggeeMemoryEx）（struct tagDEBUGHELPER * pThis，DWORDLONG qwAddr，DWORD nWant，VOID * pWhere，DWORD * nGot）; int（WINAPI * GetProcessorType）（struct tagDEBUGHELPER * pThis）; } DEBUGHELPER; typedef HRESULT（WINAPI * CUSTOMVIEWER）（DWORD dwAddress，DEBUGHELPER * pHelper，int nBase，BOOL bUniStrings，char * pResult，size_t max，DWORD reserved）; externCADDIN_API HRESULT MyClassFormatter（DWORD dwAddress，DEBUGHELPER * pHelper，int nBase，BOOL bUniStrings，char * pResult，size_t max，DWORD reserved）; externCADDIN_API HRESULT MyStructFormatter（DWORD dwAddress，DEBUGHELPER * pHelper，int nBase，BOOL bUniStrings，char * pResult，size_t max，DWORD reserved）; class MyClass { public： int publicInt; }; struct MyStruct {int i; }; ADDIN_API HRESULT MyClassFormatter（DWORD dwAddress，DEBUGHELPER * pHelper，int nBase，BOOL bUniStrings，char * pResult，size_t max，DWORD reserved） { MyClass c; DWORD nGot; pHelper-> ReadDebuggeeMemory（pHelper，dwAddress，sizeof（MyClass），& c，& nGot）; sprintf_s（pResult，max，Dll MyClass：max =％d nGot =％d MyClass =％x publicInt =％d，max，nGot，dwAddress，c.publicInt）; 返回S_OK; $ b ADDIN_API HRESULT MyStructFormatter（DWORD dwAddress，DEBUGHELPER * pHelper，int nBase，BOOL bUniStrings，char * pResult，size_t max，DWORD reserved） { MyStruct s; DWORD nGot; pHelper-> ReadDebuggeeMemory（pHelper，dwAddress，sizeof（MyStruct），& s，& nGot）; sprintf_s（pResult，max，Dll MyStruct：max =％d nGot =％d MyStruct =％x i =％d，max，nGot，dwAddress，s.i）; 返回S_OK; } 这是Visual Studio 2012调试器用来显示值的.natvis文件。将其放在.natvis文件中。我把它命名为NatvisAddIn.natvis。该文件指示VS 2012调试器调用NatvisAddIn.dll。 dll包含两个可视化方法调用; MyClassFormatter格式化MyClass和MyStructFormatter以格式化MyStruct。调试器将在每个指定类型的实例（MyClass，MyStruct）的Auto，Watch或tooltip显示中显示方法的格式值。 <？xml version =1.0encoding =utf-8？> < AutoVisualizer xmlns =http://schemas.microsoft.com/vstudio/debugger/natvis/2010> < Type Name =MyClass> < DisplayString LegacyAddin =NatvisAddIn.dllExport =MyClassFormatter>< / DisplayString> < / Type> < Type Name =MyStruct> < DisplayString LegacyAddin =NatvisAddIn.dllExport =MyStructFormatter>< / DisplayString> < / Type> < / AutoVisualizer> 将编译的NatvisAddIn.dll文件和NatvisAddIn.natvis文件放入以下三个位置之一：％VSINSTALLDIR％\Common7\Packages\Debugger\Visualizers（需要管理员访问）％USERPROFILE％\My Documents\Visual Studio 2012\Visualizers\ VS扩展文件夹您需要确保以下注册表项存在，值为1： What is needed to write a custom native visualizer DLL in C++ for Visual Studio 2012 debugger? I want to display a value that can only be calculated from a class/struct on-demand hence a native visualizer DLL is required. Visual Studio 2012 uses a new method for implementing native visualizers called Natvis. As of this time, there is very little correct information on Natvis and especially on using Natvis to call a visualizer DLL. The DLL will calculate a display string based on class/struct member values. 解决方案 Here's the C++ code that comprises the AddIn DLL. I named the file NatvisAddIn.cpp and the project created NatvisAddIn.dll.#include "stdafx.h"#include <iostream>#include <windows.h>#define ADDIN_API __declspec(dllexport)typedef struct tagDEBUGHELPER{ DWORD dwVersion; HRESULT (WINAPI *ReadDebuggeeMemory)( struct tagDEBUGHELPER *pThis, DWORD dwAddr, DWORD nWant, VOID* pWhere, DWORD *nGot ); // from here only when dwVersion >= 0x20000 DWORDLONG (WINAPI *GetRealAddress)( struct tagDEBUGHELPER *pThis ); HRESULT (WINAPI *ReadDebuggeeMemoryEx)( struct tagDEBUGHELPER *pThis, DWORDLONG qwAddr, DWORD nWant, VOID* pWhere, DWORD *nGot ); int (WINAPI *GetProcessorType)( struct tagDEBUGHELPER *pThis );} DEBUGHELPER;typedef HRESULT (WINAPI *CUSTOMVIEWER)( DWORD dwAddress, DEBUGHELPER *pHelper, int nBase, BOOL bUniStrings, char *pResult, size_t max, DWORD reserved );extern "C" ADDIN_API HRESULT MyClassFormatter( DWORD dwAddress, DEBUGHELPER *pHelper, int nBase, BOOL bUniStrings, char *pResult, size_t max, DWORD reserved );extern "C" ADDIN_API HRESULT MyStructFormatter( DWORD dwAddress, DEBUGHELPER *pHelper, int nBase, BOOL bUniStrings, char *pResult, size_t max, DWORD reserved );class MyClass{public: int publicInt;};struct MyStruct { int i; };ADDIN_API HRESULT MyClassFormatter( DWORD dwAddress, DEBUGHELPER *pHelper, int nBase, BOOL bUniStrings, char *pResult, size_t max, DWORD reserved ){ MyClass c; DWORD nGot; pHelper->ReadDebuggeeMemory(pHelper,dwAddress,sizeof(MyClass),&c,&nGot); sprintf_s(pResult,max,"Dll MyClass: max=%d nGot=%d MyClass=%x publicInt=%d",max,nGot,dwAddress,c.publicInt); return S_OK;}ADDIN_API HRESULT MyStructFormatter( DWORD dwAddress, DEBUGHELPER *pHelper, int nBase, BOOL bUniStrings, char *pResult, size_t max, DWORD reserved ){ MyStruct s; DWORD nGot; pHelper->ReadDebuggeeMemory(pHelper,dwAddress,sizeof(MyStruct),&s,&nGot); sprintf_s(pResult,max,"Dll MyStruct: max=%d nGot=%d MyStruct=%x i=%d",max,nGot,dwAddress,s.i); return S_OK;}Here is the .natvis file which Visual Studio 2012 debugger uses to display the value. Place it in a .natvis file. I named it NatvisAddIn.natvis. The file instructs VS 2012 debugger to call NatvisAddIn.dll. The dll contains two visualizer method calls; MyClassFormatter to format MyClass and MyStructFormatter to format MyStruct. The debugger will show the method's formatted value in the Auto, Watch or tooltip display for each instance of the specified type (MyClass, MyStruct).<?xml version="1.0" encoding="utf-8"?> <AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010"> <Type Name="MyClass"> <DisplayString LegacyAddin="NatvisAddIn.dll" Export="MyClassFormatter"></DisplayString> </Type> <Type Name="MyStruct"> <DisplayString LegacyAddin="NatvisAddIn.dll" Export="MyStructFormatter"></DisplayString> </Type></AutoVisualizer>Place both the compiled NatvisAddIn.dll file and the NatvisAddIn.natvis files into one of the following three locations:%VSINSTALLDIR%\Common7\Packages\Debugger\Visualizers (requires admin access)%USERPROFILE%\My Documents\Visual Studio 2012\Visualizers\VS extension foldersYou will need to make sure the following registry key exists and the value is 1:If all goes well, you will see natvis messages appear in Visual Studio's debugger Output window. The messages will show whether Natvis was able to parse the .natvis files. Results of parsing every .natvis file is shown in the output window. If something is wrong, use the command "dumpbin/exports " to double check that the DLL methods' names are exactly matching the .navis file's Type=. Also make sure the current .dll and .natvis files have been copied to the appropriate directory.Natvis: Parsing natvis xml file: C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\Packages\Debugger\Visualizers\atlmfc.natvis.Natvis: Done parsing natvis xml file: C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\Packages\Debugger\Visualizers\atlmfc.natvis.Natvis: Parsing natvis xml file: C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\Packages\Debugger\Visualizers\concurrency.natvis.Natvis: Done parsing natvis xml file: C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\Packages\Debugger\Visualizers\concurrency.natvis.Natvis: Parsing natvis xml file: C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\Packages\Debugger\Visualizers\NatvisAddIn.natvis.Natvis: Done parsing natvis xml file: C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\Packages\Debugger\Visualizers\NatvisAddIn.natvis.Natvis: Parsing natvis xml file: C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\Packages\Debugger\Visualizers\stl.natvis.Natvis: Done parsing natvis xml file: C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\Packages\Debugger\Visualizers\stl.natvis.Natvis: Parsing natvis xml file: C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\Packages\Debugger\Visualizers\windows.natvis.Natvis: Done parsing natvis xml file: C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\Packages\Debugger\Visualizers\windows.natvis.Natvis: Parsing natvis xml file: C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\Packages\Debugger\Visualizers\winrt.natvis.Natvis: Done parsing natvis xml file: C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\Packages\Debugger\Visualizers\winrt.natvis.Test program:#include "stdafx.h"#include <iostream>class MyClass{public: int publicInt;};struct MyStruct { int i; };int _tmain(int argc, _TCHAR* argv[]){ struct MyStruct s = {1234}; std::cout << s.i << std::endl; MyClass *c = new MyClass; c->publicInt = 1234; std::cout << c->publicInt << std::endl; return 0;}Information resources: 这篇关于如何为Visual Studio 2012调试器编写自定义的本地可视化DLL？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！