Why can't ie11 load the DLL generated by the qt-5.6/activeqt-hierarchy-example?

[hskoglund]

Don't think it's possible to do in Javascript, but what I do know, is that it's pretty easy to change width and height of a QWidget (e.g. setGeometry(), same as in osgActiveGLQT's constructor)

So, easiest would be to implement 2 new slots in your C++ code for the osgActiveGLQT object, for example setHeight() and setWidth().
Then you could call those 2 functions from Javascript, in the same way you call setTimeout() now.

[mirro]

@hskoglund the following code successfully changes window size in javascript.

<script language="javascript">
function ResetWidget()
{
     var e1 = document.getElementById("ParentWidget");
     e1.style.width  = "1000px";
     e1.style.height = "800px";
}
</script>

<object ID="ParentWidget" WIDTH="900" HEIGHT="600" CLASSID="CLSID:d574a747-8016-46db-a07c-b2b4854ee75c"
CODEBASE="http://www.qt-project.org/demos/hierarchy.cab">
[Object not available! Did you forget to build and register the server?]
</object><br />
<form>
<input type="button" value="ResetWidget" onClick="ResetWidget()" />
</form>

[mirro]

Why is the activeQT window size wrong when i set window size injavascript?

The following screenshots and code
link text

<object ID ="osgActiveGLQT" WIDTH = "900" HEIGHT = "600" CLASSID="CLSID:B0545661-8607-43BA-A1C2-B43C0A93D976">
[Object not available! Did you forget to build and register the server?]
</object>

#ifndef ActiveQTOSGWidget_H
#define ActiveQTOSGWidget_H

#include <iostream>

#include <QtWidgets/QWidget>
#include <QtWidgets/QLayout>
#include <QtWidgets/QApplication>
#include <QtWidgets/QLCDNumber>
#include <QTimer>
#include <QMessageBox>

#include <osgViewer/CompositeViewer>
#include <osgViewer/ViewerEventHandlers>
#include <osgGA/MultiTouchTrackballManipulator>
#include <osgDB/ReadFile>
#include <osgQt/GraphicsWindowQt>
#include <osg/PolygonOffset>

class ActiveQTOSGWidget : public QWidget
{
public:
	ActiveQTOSGWidget(QWidget *parent = 0);
public:
	virtual void paintEvent(QPaintEvent* event)
	{
		// Update the camera
		QPainter paint(this);
		QPen pen;
		pen.setColor(QColor(255, 0, 0));
		QBrush brush(QColor(255, 0, 0));
		paint.setPen(pen);
		paint.setBrush(brush);
		int ss = width();
		paint.drawRect(0, 0, width(), height());
	}
};
#endif // OSGVIEW_H

#ifndef OSGACTIVEGLQT_H
#define OSGACTIVEGLQT_H
#include <iostream>

#include <QtWidgets/QWidget>
#include <ActiveQt/QAxBindable>
#include <QtWidgets/QLayout>
#include <QtWidgets/QApplication>
#include <QtWidgets/QLCDNumber>
#include <QTimer>
#include <QApplication>
#include <QDesktopWidget>
#include <QMessageBox>
#include <QPushButton>

#include "ui_osgactiveglqt.h"

#include "ActiveQTOSGWidget.h"

class osgActiveGLQT : public QWidget,public QAxBindable
{
	Q_OBJECT
public:
	osgActiveGLQT(QWidget *parent = 0);
private:
	Ui::osgActiveGLQTClass ui;
};

#endif // OSGACTIVEGLQT_H

[hskoglund]

Nice! Resizing is most likely is part of the ActiveX specification, and ActiveQt being of good quality supports it.

[mirro]

@hskoglund

Is... there? Why is the activeQT window's size less than QT Createor window's size when I set the size of 'WIDTH' and 'HEIGHT' Properties of ActiveQT Object in javascript?

The following screenshots and code
link text

<object ID ="osgActiveGLQT" WIDTH = "900" HEIGHT = "600" CLASSID="CLSID:B0545661-8607-43BA-A1C2-B43C0A93D976">
[Object not available! Did you forget to build and register the server?]
</object>

#ifndef ActiveQTOSGWidget_H
#define ActiveQTOSGWidget_H

#include <iostream>

#include <QtWidgets/QWidget>
#include <QtWidgets/QLayout>
#include <QtWidgets/QApplication>
#include <QtWidgets/QLCDNumber>
#include <QTimer>
#include <QMessageBox>

#include <osgViewer/CompositeViewer>
#include <osgViewer/ViewerEventHandlers>
#include <osgGA/MultiTouchTrackballManipulator>
#include <osgDB/ReadFile>
#include <osgQt/GraphicsWindowQt>
#include <osg/PolygonOffset>

class ActiveQTOSGWidget : public QWidget
{
public:
	ActiveQTOSGWidget(QWidget *parent = 0);
public:
	virtual void paintEvent(QPaintEvent* event)
	{
		// Update the camera
		QPainter paint(this);
		QPen pen;
		pen.setColor(QColor(255, 0, 0));
		QBrush brush(QColor(255, 0, 0));
		paint.setPen(pen);
		paint.setBrush(brush);
		int ss = width();
		paint.drawRect(0, 0, width(), height());
	}
};
#endif // OSGVIEW_H

#ifndef OSGACTIVEGLQT_H
#define OSGACTIVEGLQT_H
#include <iostream>

#include <QtWidgets/QWidget>
#include <ActiveQt/QAxBindable>
#include <QtWidgets/QLayout>
#include <QtWidgets/QApplication>
#include <QtWidgets/QLCDNumber>
#include <QTimer>
#include <QApplication>
#include <QDesktopWidget>
#include <QMessageBox>
#include <QPushButton>

#include "ui_osgactiveglqt.h"

#include "ActiveQTOSGWidget.h"

class osgActiveGLQT : public QWidget,public QAxBindable
{
	Q_OBJECT
public:
	osgActiveGLQT(QWidget *parent = 0);
private:
	Ui::osgActiveGLQTClass ui;
};

#endif // OSGACTIVEGLQT_H

[hskoglund]

Hmm it works for me, I tried with the hierarchyax sample and when I set WIDTH and HEIGHT in test.html:

..
<p>
This widget can have many children!
</p>
<object ID="ParentWidget" WIDTH = "900" HEIGHT = "600" CLASSID="CLSID:d574a747-8016-46db-a07c-b2b4854ee75c"
[Object not available! Did you forget to build and register the server?]
</object><br />
...

the ActiveQt window is set to 900x600:

[mirro]

@hskoglund
oh~~ How to get the widget window from HWND in Qt5?

The following QT4 code

QWidget *myWidget;
HWND hwnd;
myWidget=QWidget::find(hwnd);

[hskoglund]

In Qt5 I think you have to step through all the QWidgets and look for a HWND match, like this:

QWidget *myWidget = nullptr;
HWND hwnd;

for (auto w : findChildren<QWidget*>())
    if (hwnd == (HWND) w->winId())
        myWidget = w;

[mirro]

Thank you very much.

How does the following lambda qt5 code translate into a normal slot for the singleshot in QT4?

 QTimer::singleShot(value * 1000,[this] { signalFromQt("Hello no.:" + QString::number(++i)); });

[mrjj]

@mirro
Qt4 does not support lambdas as far as i know as it must use the new connect syntax that came in Qt5.
So in Qt4 you have to use a normal slot for the singleshot.

[mirro]

@mrjj

How does the following lambda qt5 code translate into a normal slot for the singleshot in QT4?
[this] { signalFromQt("Hello no.:" + QString::number(++i)); }

[mrjj]

@mirro
QTimer::singleShot(0, this, SLOT(theslot()));

like any other slot

theslot must be in the class that is /this/
the i variable must be also be a class member of same class

[mirro]

@hskoglund
Start with C++ in Qt, emit a signal from there into IE11,Can it be implemented in QT4?

QTimer::singleShot(value * 1000,[this] { signalFromQt("Hello no.:" + QString::number(++i)); });

[mrjj]

@mirro
Hi
As told, Qt4 has no lamdas./ the new connect syntax.
so no you cannot use that syntax in Qt4.