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我尝试创建一个 COM 对象并从 Qt 中的对象获取接口。所以 Qt 作为 COM 客户端工作。在我的示例中,COM 服务器是 CANoe COM 服务器。

这是我的 Qt pro 文件和 interface.cpp 文件的源代码,我在其中尝试建立与 CANoe 的连接:

轮廓:

# Add more folders to ship with the application, here
folder_01.source = qml/3com_interface
folder_01.target = qml
DEPLOYMENTFOLDERS = folder_01

# Additional import path used to resolve QML modules in Creator's code model
QML_IMPORT_PATH =

# If your application uses the Qt Mobility libraries, uncomment the following
# lines and add the respective components to the MOBILITY variable.
# CONFIG += mobility
# MOBILITY +=

# The .cpp file which was generated for your project. Feel free to hack it.
SOURCES += main.cpp \
    interface.cpp

# Installation path
# target.path =

# Please do not modify the following two lines. Required for deployment.
include(qtquick2applicationviewer/qtquick2applicationviewer.pri)
qtcAddDeployment()

HEADERS += \
    CANoe.h \
    interface.h

CONFIG += qaxcontainer

接口.cpp

#include "interface.h"
#include <QDebug>
#include "objbase.h"
#include "CANoe.h"

#include "windows.h"
#include "winnls.h"
#include "shobjidl.h"
#include "objidl.h"
#include "shlguid.h"

#include "strsafe.h"


Interface::Interface(QObject *parent) :
    QObject(parent)
{
}

void Interface::trigger_slot(const QString &msg)
{


    IApplication* pIApp;
    HRESULT result;

    result = CoInitialize(NULL);

    CLSID clsid;
    result = CLSIDFromProgID(L"CANoe.Application", &clsid);

    if(SUCCEEDED(result))
    {
        qDebug() << "CLSID saved";
    }

    const IID IID_IApplication = __uuidof(IApplication);

    result = CoCreateInstance(clsid, NULL, CLSCTX_LOCAL_SERVER, IID_IApplication, (void**) &pIApp);

    if(SUCCEEDED(result))
    {
        qDebug() << "Connection established";
    }

}

当我尝试构建程序时,我收到以下错误代码: undefined reference to '_GUID const&_mingw_uuidof()'

有人知道如何在 Qt 和 COM 服务器之间创建 COM 接口吗?我在互联网上搜索了几个小时,但没有找到任何解释。仅用于使用 ATL 访问带有 Visual Studio 的 COM 服务器。但我不能在 Qt 中使用 ATL。

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1 回答 1

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__uuid为 COM 类获取 GUID 很方便,但任何其他方法也可以。除此之外,您的代码应该可以工作。

错误消息看起来像 MinGW 链接错误(没有足够的信息可以确定),表明您错过了 MinGW COM 库。

于 2013-12-11T10:28:53.897 回答