How to pass a control back to parent dialog?

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Hi,

I've a class called CChartCtrl which i used it to draw graphs.

The graphs that i drew is in a Custom Control in the parent dialog. I've a button called "Full-Screen".
When i clicked on the full screen button, I passed the Custom control to the new dialog in Full-screen.

When i tried to restore to the parent dialog, it will give me error.

C++

CChartCtrl m_ChartCtrl; 
CFullScreen m_pFullScr; 
void CParentDialog::OnBnClickedButtonFullscr() 
{ 
        m_pFullScr.SetChartCtrl(&m_ChartCtrl); 
} 
CChartCtrl* m_maxChartCtrl; 
void CFullScreen::SetChartCtrl(CChartCtrl* ChartCtrl) 
{ 
        m_maxChartCtrl = ChartCtrl; 
}

In Full-Screen On-Init Dialog:

C++

m_maxChartCtrl->SetParent(this);

When I clicked the restore screen button:

C++

CParentDlg *dlg = (CParentDlg *) this->GetParent();
dlg->SetChartCtrl(m_maxChartCtrl);

In Parent Dialog:

C++

CChartCtrl m_ChartCtrl;

void CParentDlg::SetChartCtrl(CChartCtrl ChartCtrl)
{
	m_ChartCtrl = ChartCtrl;   // Error occurs here
}

if(m_pFullScr.DoModal() == IDOK)
{

	m_ChartCtrl.SetParent(this);
}

I will receive this error:

error C2582: 'operator =' function is unavailable in 'CChartCtrl'

CChartCtrl is derived from CWnd.
Am i doing anything wrong? Any help is greatly appreciated. Thank you.

Posted 3-Apr-12 20:28pm

skfoo1

Updated 3-Apr-12 21:12pm

v4

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Comments

Resmi Anna 4-Apr-12 3:01am

not clear what you are trying to attempt. Can you show the exact line where you are getting error? have to overloaded the = operator in your CChartCtrl class or its base class if any?

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Jochen Arndt · Accepted Answer · 2012-04-03T21:03:00

Your CChartCtrl class has no copy (=) operator.

It may be possible to pass the existing control by pointer or reference to the full screen dialog that can resize and redraw the chart. But that requires assignment of a new parent window to the control which may have side effects.

Solutions are:

If your normal dialog does only contain the chart and no other controls, you may modify it for full screen by removing the borders and caption and resize it to full screen size.
Create a new chart using the settings and data from the existing one. That is, create the new chart for full screen mode like the one for normal view (pass settings and data points).