[英]Create COM object in Qt
我嘗試創建一個COM對象,並從Qt中的對象獲取接口。 因此,Qt充當COM客戶端。 在我的示例中,COM服務器是CANoe COM服務器。
這是我嘗試建立與CANoe的連接的Qt pro文件和interface.cpp文件的源代碼:
專業檔案:
# 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
interface.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";
}
}
當我嘗試構建程序時,出現以下錯誤代碼:對'_GUID const&_mingw_uuidof()'的未定義引用
有人知道如何在Qt和COM服務器之間創建COM接口嗎? 我已經在互聯網上搜索了幾個小時,但沒有找到任何解釋。 僅用於通過使用ATL使用Visual Studio訪問COM服務器。 但是我不能在Qt中使用ATL。
__uuid
為獲取COM類的GUID提供了便利,但是任何其他方法也可以使用。 除此之外,您的代碼應該可以工作。
該錯誤消息看起來像是MinGW鏈接錯誤(沒有足夠的信息來確定),表明您錯過了MinGW COM庫。
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