Multiple Example (ActiveQt) | Active Qt 5.15.19 (original) (raw)

The Multiple example demonstrates the implementation of a QAxFactory to provide multiple ActiveX controls in a single in process ActiveX server using the QAXFACTORY_EXPORT() macro. The ActiveX controls in this example are simple QWidget subclasses that reimplement QWidget::paintEvent().

class QAxWidget1 : public QWidget { Q_OBJECT Q_CLASSINFO("ClassID", "{1D9928BD-4453-4bdd-903D-E525ED17FDE5}") Q_CLASSINFO("InterfaceID", "{99F6860E-2C5A-42ec-87F2-43396F4BE389}") Q_CLASSINFO("EventsID", "{0A3E9F27-E4F1-45bb-9E47-63099BCCD0E3}")

Q_PROPERTY([QColor](qcolor.html) fillColor READ fillColor WRITE setFillColor)

public: explicit QAxWidget1(QWidget *parent = nullptr) : QWidget(parent) { }

[QColor](qcolor.html) fillColor() const
{
    return m_fillColor;
}

void setFillColor(const [QColor](qcolor.html) &fc)
{
    m_fillColor = fc;
    repaint();
}

protected: void paintEvent(QPaintEvent *e) override { QPainter paint(this); QRect r = rect(); r.adjust(10, 10, -10, -10); paint.fillRect(r, m_fillColor); }

private: QColor m_fillColor = Qt::red; };

The first control draws a filled rectangle. The fill color is exposed as a property. Q_CLASSINFO() is used to specify the COM identifiers.

class QAxWidget2 : public QWidget { Q_OBJECT Q_CLASSINFO("ClassID", "{58139D56-6BE9-4b17-937D-1B1EDEDD5B71}") Q_CLASSINFO("InterfaceID", "{B66280AB-08CC-4dcc-924F-58E6D7975B7D}") Q_CLASSINFO("EventsID", "{D72BACBA-03C4-4480-B4BB-DE4FE3AA14A0}") Q_CLASSINFO("ToSuperClass", "QAxWidget2") Q_CLASSINFO("StockEvents", "yes") Q_CLASSINFO("Insertable", "yes")

Q_PROPERTY(int lineWidth READ lineWidth WRITE setLineWidth)

public: using QWidget::QWidget;

int lineWidth() const
{
    return m_lineWidth;
}

void setLineWidth(int lw)
{
    m_lineWidth = lw;
    repaint();
}

protected: void paintEvent(QPaintEvent *e) override { QPainter paint(this); QPen pen = paint.pen(); pen.setWidth(m_lineWidth); paint.setPen(pen);

    [QRect](qrect.html) r = rect();
    r.adjust(10, 10, -10, -10);
    paint.drawEllipse(r);
}

private: int m_lineWidth = 1; };

The second control draws a circle. The linewith is exposed as a property. Q_CLASSINFO() is used to specify the COM identifiers, and to set the attributes ToSuperClass and StockEvents to expose only the API of the class itself, and to add COM stock events to the ActiveX control.

#include "ax1.h" #include "ax2.h" #include

QT_USE_NAMESPACE

QAXFACTORY_BEGIN("{98DE28B6-6CD3-4e08-B9FA-3D1DB43F1D2F}", "{05828915-AD1C-47ab-AB96-D6AD1E25F0E2}") QAXCLASS(QAxWidget1) QAXCLASS(QAxWidget2) QAXFACTORY_END()

The classes are exported from the server using the QAxFactory macros.

To build the example you must first build the QAxServer library. Then run qmake and your make tool in examples/activeqt/multiple.

The Two Simple Qt Widgets demonstration requires your WebBrowser to support ActiveX controls, and scripting to be enabled.

This is one [QWidget](qwidget.html) subclass:
[Object not available! Did you forget to build and register the server?]

This is another [QWidget](qwidget.html) subclass:
[Object not available! Did you forget to build and register the server?]

Example project @ code.qt.io

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