Qt application with live Active X camera feed.

[bitChanger]

This should be all the code you would need. Just create a basic Qt app with a custom widget. Then place the above code in the constructor for the widget.

[cloclopolio]

Hi, I know the last message for this thread was in 2006, but I try !

I want to do exactly the same thing. So I have created a new widget which has a QAxWidget. Here is the constructor code of my new widget class :

AxisMediaControlWidget::AxisMediaControlWidget(QWidget *parent, Qt::WFlags flags)
: QWidget(parent, flags)
{
	m_axis = new QAxWidget(this);
	m_glay = new QGridLayout(this);
 
	m_axis->setControl(QString::fromUtf8("{745395C8-D0E1-4227-8586-624CA9A10A8D}"));
	m_axis->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
	m_axis->setObjectName(QString::fromUtf8("CAxismediacontrol"));
 
	EXCEPINFO excepInfo;
	memset(&excepInfo, 0, sizeof excepInfo);
 
	UINT nArgErr = (UINT)-1; // initialize to invalid arg
 
	DISPPARAMS dispparams;
	memset(&dispparams, 0, sizeof dispparams);
	dispparams.cArgs = 1;
	dispparams.cNamedArgs = 1;
	DISPID dispidNamed = DISPID_PROPERTYPUT;
	dispparams.rgdispidNamedArgs = &dispidNamed;
	VARIANT* pArg = new VARIANT[dispparams.cArgs];
	dispparams.rgvarg = pArg;
	memset(pArg, 0, sizeof(VARIANT) * dispparams.cArgs);
 
	IDispatch *iface = 0;	
	m_axis->queryInterface((QUuid)IID_IDispatch, (void**)&iface);
	if (iface) 
	{
		pArg->vt = VT_EMPTY;
		dispparams.cArgs = 0;
		dispparams.cNamedArgs = 0;
		iface->Invoke(102, IID_NULL, 0, DISPATCH_METHOD, &dispparams, 0, &excepInfo, &nArgErr);
 
		dispparams.cArgs = 1;
		dispparams.cNamedArgs = 1;
		// put_PTZControlURL	
		pArg->bstrVal = (L"http://10.67.148.30/axis-cgi/com/ptz.cgi");
		iface->Invoke(0x1e, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);		
 
		// put_UIMode
		pArg->bstrVal = _T("ptz-absolute");
		iface->Invoke(0x3, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);
 
		pArg->vt = VT_BOOL;
		pArg->boolVal = VARIANT_TRUE;
		iface->Invoke(0x12, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);
 
		iface->Invoke(0x11, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);
 
		iface->Invoke(0x10, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);
 
		iface->Invoke(0x73, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);
 
		iface->Invoke(0x75, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);
 
		pArg->vt = VT_BSTR;
		pArg->bstrVal = (L"default,+ptz");
		iface->Invoke(0x13, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);
 
		pArg->bstrVal = (L"http://10.67.148.30/axis-cgi/mjpg/video.cgi");
		iface->Invoke(1, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);
 
		pArg->bstrVal = (L"mjpg");
		iface->Invoke(9, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);
 
		// Play	
		pArg->vt = VT_EMPTY;
		dispparams.cArgs = 0;
		dispparams.cNamedArgs = 0;
		dispparams.rgdispidNamedArgs = 0;
		dispparams.rgvarg = 0;
		iface->Invoke(101, IID_NULL, 0, DISPATCH_METHOD, &dispparams, 0, &excepInfo, &nArgErr);
 
		iface->Release(); 
	}
	m_glay->addWidget(m_axis, 0, 0);
}

AxisMediaControlWidget::AxisMediaControlWidget(QWidget *parent, Qt::WFlags flags)
: QWidget(parent, flags)
{
	m_axis = new QAxWidget(this);
	m_glay = new QGridLayout(this);

	m_axis->setControl(QString::fromUtf8("{745395C8-D0E1-4227-8586-624CA9A10A8D}"));
	m_axis->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
	m_axis->setObjectName(QString::fromUtf8("CAxismediacontrol"));

	EXCEPINFO excepInfo;
	memset(&excepInfo, 0, sizeof excepInfo);

	UINT nArgErr = (UINT)-1; // initialize to invalid arg

	DISPPARAMS dispparams;
	memset(&dispparams, 0, sizeof dispparams);
	dispparams.cArgs = 1;
	dispparams.cNamedArgs = 1;
	DISPID dispidNamed = DISPID_PROPERTYPUT;
	dispparams.rgdispidNamedArgs = &dispidNamed;
	VARIANT* pArg = new VARIANT[dispparams.cArgs];
	dispparams.rgvarg = pArg;
	memset(pArg, 0, sizeof(VARIANT) * dispparams.cArgs);
			
	IDispatch *iface = 0;	
	m_axis->queryInterface((QUuid)IID_IDispatch, (void**)&iface);
	if (iface) 
	{
		pArg->vt = VT_EMPTY;
		dispparams.cArgs = 0;
		dispparams.cNamedArgs = 0;
		iface->Invoke(102, IID_NULL, 0, DISPATCH_METHOD, &dispparams, 0, &excepInfo, &nArgErr);

		dispparams.cArgs = 1;
		dispparams.cNamedArgs = 1;
		// put_PTZControlURL	
		pArg->bstrVal = (L"http://10.67.148.30/axis-cgi/com/ptz.cgi");
		iface->Invoke(0x1e, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);		

		// put_UIMode
		pArg->bstrVal = _T("ptz-absolute");
		iface->Invoke(0x3, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);

		pArg->vt = VT_BOOL;
		pArg->boolVal = VARIANT_TRUE;
		iface->Invoke(0x12, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);

		iface->Invoke(0x11, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);

		iface->Invoke(0x10, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);

		iface->Invoke(0x73, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);

		iface->Invoke(0x75, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);

		pArg->vt = VT_BSTR;
		pArg->bstrVal = (L"default,+ptz");
		iface->Invoke(0x13, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);

		pArg->bstrVal = (L"http://10.67.148.30/axis-cgi/mjpg/video.cgi");
		iface->Invoke(1, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);

		pArg->bstrVal = (L"mjpg");
		iface->Invoke(9, IID_NULL, 0, DISPATCH_PROPERTYPUT, &dispparams, 0, &excepInfo, &nArgErr);

		// Play	
		pArg->vt = VT_EMPTY;
		dispparams.cArgs = 0;
		dispparams.cNamedArgs = 0;
		dispparams.rgdispidNamedArgs = 0;
		dispparams.rgvarg = 0;
		iface->Invoke(101, IID_NULL, 0, DISPATCH_METHOD, &dispparams, 0, &excepInfo, &nArgErr);

		iface->Release(); 
	}
	m_glay->addWidget(m_axis, 0, 0);
}

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When I display my new widget in a QDialog, I have the tool bar I want to display but the frame where the video must be displayed stay white.

Do you have an idea why it doesn't work ?

[shamil]

Only for future readers who will find this post from google like me :-) There is more simple way to do it. My code:

#include <ActiveQt/qaxwidget.h>
#include <QtGui/qapplication.h>
 
int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QAxWidget w;
    w.setControl(QString::fromUtf8("{745395C8-D0E1-4227-8586-624CA9A10A8D}"));
    w.setObjectName(QString::fromUtf8("Axis Video"));
    w.setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    w.show();
 
    w.dynamicCall("MediaURL", "http://10.0.0.10/axis-cgi/mjpg/video.cgi");
    w.dynamicCall("MediaType", "mjpeg-unicast");
    w.dynamicCall("StretchToFit", "true");
    w.dynamicCall("Play()");
    return a.exec();
}

#include <ActiveQt/qaxwidget.h>
#include <QtGui/qapplication.h>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QAxWidget w;
    w.setControl(QString::fromUtf8("{745395C8-D0E1-4227-8586-624CA9A10A8D}"));
    w.setObjectName(QString::fromUtf8("Axis Video"));
    w.setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    w.show();

    w.dynamicCall("MediaURL", "http://10.0.0.10/axis-cgi/mjpg/video.cgi");
    w.dynamicCall("MediaType", "mjpeg-unicast");
    w.dynamicCall("StretchToFit", "true");
    w.dynamicCall("Play()");
    return a.exec();
}

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[Mokson]

May be this software could help to you, its really awesome http://www.videocapx.com