var ctrlman = m_Map.GetCtrlMan();
var ctrlstate = ctrlman.GetControlState();
var dpsize = ctrlstate.GetSizeDP();
var util = m_Map.GetUtility(); 

  
var width_px = dpsize.GetCX()/2 - 300; 

  
alert(width_px);

CXCtrlMan ctrlman = m_Map.GetCtrlMan();
CXControlState ctrlstate = ctrlman.GetControlState();
CXSize dpsize = ctrlstate.GetSizeDP(); 
		
long width_px = dpsize.GetCX()/2 - 250;
		
CString msg;
msg.Format(_T("BTN UIImage : [%lu]"), width_px);
AfxMessageBox(msg);