Assertion failure in load/setbitmap()

[olavl]

Thanks for your reply

Calling DeleteObject on my bitmap seems to work out that problem. Having looked at it a little closer, it seems to me that the problem might be that the window handler for the CStatic == 0?
I thought this would be taken care of by the
DDX_Control(pDX, IDC_PORTCANNONBMP, m_oPortCannonCtrl);
DDX_Control(pDX, IDC_STBDCANNONBMP, m_oStbdCannonCtrl);
(The IDC's being the ID of my picture boxes.)
Or do I need to do something more to draw the static in my dialog window?
If so, how do I set the handler correct?

Here's an exact copy of the code:

HBRUSH CCntrPartDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) 
{
	HBRUSH hbr = CGuiBase::OnCtlColor(pDC, pWnd, nCtlColor);
  
  // Set brush to desired background color
	CPalette * pPalette = (CPalette*)GetPalette();
	int iLightMode = m_iCurrentLightMode;
	GetLightMode(&iLightMode, -1);
	if(iLightMode != m_iCurrentLightMode || m_iCurrentLightMode < 0)
	{
		try
		{
			if(iLightMode==BRIGHT_DAYLIGHT_DISP||iLightMode==WHITE_DAY_LIGHT_DISP) //0
			{
				m_iCurrentLightMode = iLightMode;
				m_oPortCannonBmp.DeleteObject();
				m_oStbdCannonBmp.DeleteObject();
				m_oPortCannonBmp.LoadBitmap(IDB_PORTCANNONDAY);
				m_oStbdCannonBmp.LoadBitmap(IDB_STBDCANNONDAY);
			}
			else
			{
				m_iCurrentLightMode = iLightMode;
				m_oPortCannonBmp.DeleteObject();
				m_oStbdCannonBmp.DeleteObject();
				m_oPortCannonBmp.LoadBitmap(IDB_PORTCANNONNIGHT);
				m_oStbdCannonBmp.LoadBitmap(IDB_STBDCANNONNIGHT);
			}
			m_oPortCannonCtrl.SetBitmap(m_oPortCannonBmp);
//			m_oPortCannonCtrl.Invalidate();
			m_oStbdCannonCtrl.Attach((HWND)&pWnd);// 
			m_oStbdCannonCtrl.SetBitmap(m_oStbdCannonBmp);
		}
		catch(...)
		{
			m_oStbdCannonBmp.Detach();
		}
	}	
...
}

DEbug info from the variables:
+ m_oStbdCannonCtrl {CStatic hWnd=0x0013a884 {unused=0 }} CStatic
+ m_oPortCannonCtrl {CStatic hWnd=0x019a06f8 {unused=0 }} CStatic