C / C++ / MFC

// Add as member of window or dialog class
CStatic m_IndicatorStatic;
...

// In OnCreate() (for a window implementation) or OnInitDialog() (for a dialog implementation)...
//   (for a dialog, if the picture control is a resource on the dialog, and m_IndicatorStatic is already
//     associated with the control, then don't do the Create() call)

//  (Adjust passed CRect to properly position control in window's client area)
if (m_IndicatorStatic.Create(NULL, WS_CHILD | SS_ICON, CRect(0,0,10,10), this, ID_INDICATORSTATIC))
{
   m_IndicatorStatic.SetIcon((HICON)::LoadImage(AfxGetResourceHandle(), MAKEINTRESOURCE(IDI_INDICATORRED), IMAGE_ICON, 10, 10, LR_SHARED));
}
...

// Later...Change the indicator to green
m_IndicatorStatic.SetIcon((HICON)::LoadImage(AfxGetResourceHandle(), MAKEINTRESOURCE(IDI_INDICATORGREEN), IMAGE_ICON, 10, 10, LR_SHARED));

Mark Salsbery
Microsoft MVP - Visual C++