包裹器范例演示如何导出现有
QWidget
classes as ActiveX controls, and the use of
QAxFactory
together with the
QAXFACTORY_EXPORT()
macro. ActiveX controls in this example are the standard button classes
QPushButton
,
QCheckBox
and
QRadioButton
as provided by Qt.
class ActiveQtFactory : public QAxFactory { public: ActiveQtFactory(const QUuid &lib, const QUuid &app) : QAxFactory(lib, app) {} QStringList featureList() const override { return m_activeElements.keys(); } QObject *createObject(const QString &key) override { auto it = m_activeElements.find(key); if (it != m_activeElements.end()) return it->create(); return nullptr; } const QMetaObject *metaObject(const QString &key) const override { auto it = m_activeElements.find(key); if (it != m_activeElements.end()) return it->metaObject; return nullptr; } QUuid classID(const QString &key) const override { auto it = m_activeElements.find(key); if (it != m_activeElements.end()) return it->classID; return QUuid(); } QUuid interfaceID(const QString &key) const override { auto it = m_activeElements.find(key); if (it != m_activeElements.end()) return it->interfaceID; return QUuid(); } QUuid eventsID(const QString &key) const override { auto it = m_activeElements.find(key); if (it != m_activeElements.end()) return it->eventsID; return QUuid(); } private: struct ActiveElement { QUuid classID; QUuid interfaceID; QUuid eventsID; const QMetaObject *metaObject; std::function<QObject *()> create; }; const QHash<QString, ActiveElement> m_activeElements { { QStringLiteral("QCheckBox"), { QUuid("{6E795DE9-872D-43CF-A831-496EF9D86C68}"), QUuid("{4FD39DD7-2DE0-43C1-A8C2-27C51A052810}"), QUuid("{FDB6FFBE-56A3-4E90-8F4D-198488418B3A}"), &QCheckBox::staticMetaObject, []() { return new QCheckBox; } } }, { QStringLiteral("QRadioButton"), { QUuid("{AFCF78C8-446C-409A-93B3-BA2959039189}"), QUuid("{7CC8AE30-206C-48A3-A009-B0A088026C2F}"), QUuid("{73EE4860-684C-4A66-BF63-9B9EFFA0CBE5}"), &QRadioButton::staticMetaObject, []() { return new QRadioButton; } } }, { QStringLiteral("QPushButton"), { QUuid("{2B262458-A4B6-468B-B7D4-CF5FEE0A7092}"), QUuid("{06831CC9-59B6-436A-9578-6D53E5AD03D3}"), QUuid("{3CC3F17F-EA59-4B58-BBD3-842D467131DD}"), &QPushButton::staticMetaObject, []() { return new QPushButton; } } }, { QStringLiteral("QToolButton"), { QUuid("{7c0ffe7a-60c3-4666-bde2-5cf2b54390a1}"), QUuid("{6726080f-d63d-4950-a366-9bf33e5cdf84}"), QUuid("{f4d421fd-4ead-4fd9-8a25-440766939639}"), &QToolButton::staticMetaObject, []() { return new QToolButton; } } }, }; };
The factory implementation returns the list of supported controls, creates controls on request and provides information about the unique IDs of the COM classes and interfaces for each control.
QAXFACTORY_EXPORT(ActiveQtFactory, "{3B756301-0075-4E40-8BE8-5A81DE2426B7}", "{AB068077-4924-406a-BBAF-42D91C8727DD}")
工厂的导出是使用 QAXFACTORY_EXPORT 宏。
要构建范例必须先构建
QAxServer
库。然后运行
qmake
和 make 工具在
examples/activeqt/wrapper
.
The demonstration requires a web browser that supports ActiveX controls, and scripting to be enabled.
<SCRIPT LANGUAGE="VBScript"> Sub ToolButton_Clicked() RadioButton.text = InputBox( "Enter something", "Wrapper Demo" ) End Sub Sub PushButton_clicked() MsgBox( "Thank you!" ) End Sub Sub CheckBox_toggled( state ) if state = 0 then CheckBox.text = "Check me!" else CheckBox.text = "Uncheck me!" end if End Sub </SCRIPT> <p /> A QPushButton:<br /> <object ID="PushButton" CLASSID="CLSID:2B262458-A4B6-468B-B7D4-CF5FEE0A7092" CODEBASE="http://qt.nokia.com/demos/wrapperax.cab"> <PARAM NAME="text" VALUE="Click me!" /> [Object not available! Did you forget to build and register the server?] </object><br /> <p /> A QCheckBox:<br /> <object ID="CheckBox" CLASSID="CLSID:6E795de9-872d-43cf-a831-496ef9d86c68" CODEBASE="http://qt.nokia.com/demos/wrapperax.cab"> <PARAM NAME="text" VALUE="Check me!" /> [Object not available! Did you forget to build and register the server?] </object><br /> <p /> A QToolButton:<br /> <object ID="ToolButton" CLASSID="CLSID:7c0ffe7a-60c3-4666-bde2-5cf2b54390a1" CODEBASE="http://qt.nokia.com/demos/wrapperax.cab"> [Object not available! Did you forget to build and register the server?] </object><br /> <p /> A QRadioButton:<br /> <object ID="RadioButton" CLASSID="CLSID:afcf78c8-446c-409a-93b3-ba2959039189" CODEBASE="http://qt.nokia.com/demos/wrapperax.cab"> <PARAM NAME="text" VALUE="Tune me!" /> [Object not available! Did you forget to build and register the server?] </object><br />