我们有一个.NET程序集(实际上是Aspose.Words),我们希望客户端可以轻松地从COM客户端使用它。

  • 因此,我们将.TLB与程序集一起提供,以便客户端可以从诸如C++或Delphi之类的语言中使用它,而不必担心自己提取.TLB的麻烦。
  • 我们还随程序集一起提供了一个.IDL,以便客户端(例如,如果使用ASP进行编程)希望查看枚举值,则可以对其进行查看。
  • 我希望.TLB和.IDL由构建脚本生成。我可以生成.TLB没问题。但是我无法在命令行中生成.IDL(或者将.TLB转换为.IDL)。我使用OLEVIEW.EXE手动执行此操作,这不是很好。

  • 听说过有关Delphi的TLIBIMP.EXE的消息听起来可以做到这一点,但似乎没有单独提供。

    因此,问题是:
  • 以上听起来有些愚蠢?
  • 如何使用命令行从.NET程序集获取.IDL。

  • 谢谢。

    最佳答案

    我已经写了这个快速而肮脏的技巧,用于从TLB中提取IDL。
    它使用OLEVIEW.EXE使用的相同(据我所知)COM对象。

    /*
       Extract the IDL from a tlb file and print it to stdout.
    
       The tlb file is analysed by a COM object of type CLSID_ITypeLibViewer and
       the extracted IDL is shown in a window created by the same object.
    
       This program extracts the IDL from that window.
    
       Usually Microsoft's OLEViewer (a.k.a. OLE/COM Object Viewer) registers a
       COM object of that CLSID_ITypeLibViewer (for example inside a dll called
       IViewers.Dll), I've tested it with:
       IVIEWERS.DLL "OLE/COM Object Interface Viewer" Version 6.0.6000.16384
    
       This software is provided "as-is," without any express or implied warranty.
    */
    
    #define _CRT_SECURE_NO_WARNINGS
    
    #include <Windows.h>
    #include <atlbase.h>
    #include <comdef.h>
    
    #include <iostream>
    #include <string>
    #include <ctime>
    
    const char IDL_window_name[] = "ITypeLib Viewer";
    
    const IID   IID_IInterfaceViewer = { 0xfc37e5ba, 0x4a8e, 0x11ce, { 0x87, 0x0b,
                                         0x08, 0x00, 0x36, 0x8d, 0x23, 0x02 } };
    
    const CLSID CLSID_ITypeLibViewer = { 0x57efbf49, 0x4a8b, 0x11ce, { 0x87, 0x0b,
                                         0x08, 0x00, 0x36, 0x8d, 0x23, 0x02 } };
    
    #define RICHEDIT_CONTROL_ID 0xE901 // found by Spy++
    #define RICHEDIT_PARENT_ID  0xE900 // found by Spy++
    
    #define CHECK(hr) if ( FAILED(hr) ) { std::wcerr << L"COM error: " << stringify_hr(hr) << L"\n"; return __LINE__; }
    
    std::string myself;
    std::string tlb;
    
    // My installation of Microsoft Visual Studio 2010 has a sample folder where
    // I can find the source of OleView:
    // C:\Program Files (x86)\Microsoft Visual Studio 10.0\Samples\1033\VC2010Samples.zip
    //
    // Unzipping the file gives me the solution for Visual Studio 2010
    // C++\MFC\ole\oleview\oleview.sln
    //
    // The following declaration comes from that sample.
    // The sample has also the source for the CLSID_ITypeLibViewer object but
    // unfortunately the method View is not implemented (the code in my sample says
    // "Implement interface viewer UI here.").
    DECLARE_INTERFACE_(IInterfaceViewer, IUnknown)
    {
        STDMETHOD(QueryInterface) (THIS_ REFIID riid, LPVOID FAR* ppvObj) PURE;
        STDMETHOD_(ULONG,AddRef) (THIS) PURE;
        STDMETHOD_(ULONG,Release) (THIS) PURE;
    
        STDMETHOD(View) (HWND hwndParent, REFIID riid, LPUNKNOWN punk) PURE;
    };
    
    std::string replace_all( const char* txt, const std::string& old_s, const std::string& new_s );
    std::string adapt( const char* txt );
    std::string now();
    std::wstring stringify_hr( HRESULT hr );
    
    DWORD WINAPI scrape(LPVOID)
    {
       HWND hwnd = 0;
       int guard = 100;
    
       while( guard-- > 0 && (hwnd = ::FindWindowA(0,IDL_window_name)) == 0 ) {
          ::Sleep(100);
       }
    
       if ( guard <= 0 ) {
          std::cerr << "No window found with name '" << IDL_window_name << "'\n";
          return __LINE__;
       }
    
       guard = 100;
       const size_t sz = 100*1024;
       char text[sz];
       do {
          HWND parent_hwnd = ::GetDlgItem(hwnd,RICHEDIT_PARENT_ID);
          if ( parent_hwnd == 0 ) {
             ::SendMessage(hwnd,WM_CLOSE,0,0);
             std::cerr << "No parent with ID " << std::hex << "0x"
                       << RICHEDIT_PARENT_ID << " found in window with name '"
                       << IDL_window_name << "'\n";
             return __LINE__;
          }
          HWND richedit_hwnd = ::GetDlgItem(parent_hwnd,RICHEDIT_CONTROL_ID);
          if ( richedit_hwnd == 0 ) {
             ::SendMessage(hwnd,WM_CLOSE,0,0);
             std::cerr << "No richedit with ID " << std::hex << "0x"
                       << RICHEDIT_CONTROL_ID << " found in window with name '"
                       << IDL_window_name << "'\n";
             return __LINE__;
          }
          ::GetWindowTextA(richedit_hwnd,text,sz);
          ::Sleep(100);
       } while ( guard-- > 0 && strlen(text) == 0 );
    
       if ( guard <= 0 ) {
          ::SendMessage(hwnd,WM_CLOSE,0,0);
          std::cerr << "No IDL found in window with name '"
                    << IDL_window_name << "'\n";
          return __LINE__;
       }
    
       std::cout << "// IDL extracted from " << tlb << " by tlb2idl ("
                 << myself << ") on " << now() << "\n" << adapt(text);
    
       ::SendMessage(hwnd,WM_CLOSE,0,0);
       return 0;
    }
    
    int main(int argc, char* argv[])
    {
       myself = argv[0];
       if ( argc <= 1 ) {
          std::cerr << "\nPrint to stdout the IDL extracted from file.tlb\n\nUsage:\n"
                    << myself << " file.tlb\n";
          return __LINE__;
       }
    
       DWORD exit_code = 0;
       CHECK( ::CoInitialize(0) );
       {
       CComPtr<ITypeLib> ptl;
       tlb = argv[1];
       CHECK( ::LoadTypeLib(std::wstring(tlb.begin(),tlb.end()).c_str(), &ptl) );
    
       CComPtr<IInterfaceViewer> piv;
       CHECK( ::CoCreateInstance( CLSID_ITypeLibViewer, NULL, CLSCTX_SERVER,
                                  IID_IInterfaceViewer, (void**)&piv ) );
    
       HANDLE th = ::CreateThread( 0, 0, scrape, 0, 0, 0 );
       CHECK( piv->View(0,IID_ITypeLib,ptl) );
       ::WaitForSingleObject(th,1000);
       ::GetExitCodeThread(th,&exit_code);
       }
       ::CoUninitialize();
       return exit_code;
    }
    
    std::string replace_all( const char* txt, const std::string& old_s, const std::string& new_s )
    {
       std::string str(txt);
       size_t start_pos = 0;
       while((start_pos = str.find(old_s, start_pos)) != std::string::npos) {
          str.replace(start_pos, old_s.length(), new_s);
          start_pos += new_s.length();
       }
       return str;
    }
    
    std::string adapt( const char* txt )
    {
       std::string str( replace_all(txt,"\r\n","\n") );
       return replace_all(str.c_str(),"\r","\n");
    }
    
    std::string now()
    {
       time_t szClock;
       time( &szClock );
       struct tm *newTime = localtime( &szClock );
       return asctime( newTime );
    }
    
    std::wstring stringify_hr( HRESULT hr )
    {
       return _com_error(hr).ErrorMessage();
    }
    

    关于.net - 如何在命令行中从.NET程序集获取IDL(或如何将TLB转换为IDL)?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/2825734/

    10-11 18:59