Question

当我尝试在eclipse中使用mingGw w64编译器构建这个tapi3 c ++示例时，我遇到了一个问题，我已经按照msdn的步骤逐步进行了示例

#include <iostream>
#include <tapi3.h>

using namespace std;

int main() {
    // Initialize COM.
    HRESULT hr = CoInitializeEx(
    NULL, COINIT_MULTITHREADED);
    if (hr != S_OK)
        cout << "CoInitializeEx Failed !!!" << endl;

    // Create a TAPI entry point object.
    ITTAPI *gpTapi;    // globally allocated
    hr = CoCreateInstance(CLSID_TAPI, NULL, CLSCTX_INPROC_SERVER, IID_ITTAPI,
        (LPVOID *) &gpTapi);
    if (hr != S_OK)
        cout << "CoCreateInstance Failed !!!" << endl;

    // Initialize TAPI.
    hr = gpTapi->Initialize();
    if (hr != S_OK)
        cout << "gpTapi->Initialize() Failed !!!" << endl;

    // Declare the interfaces used to select an address.
    IEnumAddress * pIEnumAddress;
    ITAddress * pAddress;
    ITMediaSupport * pMediaSupport;
    VARIANT_BOOL bSupport;

    // Use the TAPI object to enumerate available addresses.
    hr = gpTapi->EnumerateAddresses(&pIEnumAddress);
    // If (hr != S_OK) process the error here.

    // Locate an address that can support the media type the application needs.
    while ( S_OK == pIEnumAddress->Next(1, &pAddress, NULL)) {
        // Determine the media support.
        hr = pAddress->QueryInterface(IID_ITMediaSupport,
            (void **) &pMediaSupport);
        if (hr != S_OK)
        cout << "pAddress->QueryInterface() Failed !!!" << endl;

        // In this example, the required media type is already known.
        // The application can also use the address object to
        // enumerate the media supported, then choose from there.
        hr = pMediaSupport->QueryMediaType(TAPIMEDIATYPE_AUDIO | TAPIMEDIATYPE_VIDEO, &bSupport);
        if (hr != S_OK)
            cout << "pMediaSupport->QueryMediaType() Failed !!!" << endl;

        if (bSupport) {
            break;
        }
    }
    // pAddress is now a usable address.

    return 0;
}

我已经获得了lib ole32和old32，但是当我构建这个例子时，它会返回这个错误的时间，但是当我使用visual c ++编译时它可以工作

 src\main.o:main.cpp (.rdata$.refptr.IID_ITMediaSupport[.refptr.IID_ITMediaSupport]+0x0): undefined reference to `IID_ITMediaSupport'
src\main.o:main.cpp:(.rdata$.refptr.CLSID_TAPI[.refptr.CLSID_TAPI]+0x0): undefined reference to `CLSID_TAPI'
src\main.o:main.cpp:(.rdata$.refptr.IID_ITTAPI[.refptr.IID_ITTAPI]+0x0): undefined reference to `IID_ITTAPI'
collect2.exe: error: ld returned 1 exit status

请你帮我解决这个问题，对不起我的英文

Answer 1

确保添加了这些lib文件：

version.lib ole32.lib oleaut32.lib uuid.lib

（来源：http://microsoft.public.win32.programmer.tapi.narkive.com/e4h0yQcj/com-and-tapi-initialize-error）

CLSID_TAPI和IID_ITMediaSupport是外部符号，因此需要lib。 IID_ITTAPI是已知的，也可以直接添加为头声明，如下所示：

const IID IID_ITTAPI = {0xB1EFC382,0x9355,0x11d0,{0x83,0x5C,0x00,0xAA,0x00,0x3C,0xCA,0xBD}};

在eclipse中使用migw编译器执行构建Tapi3 c ++示例时出错

1 个答案: