C / C++ / MFC

// w12_reserved4_data;<br />
typedef struct <br />
{<br />
	unsigned	 data 	:	1	;	<br />
}W12_RESERVED4_DATA;<br />
<br />
enum	W12_SELECTED_SOURCE_DATA		 { ON,OFF }; <br />
<br />
// w12_reserved5_data;<br />
typedef struct <br />
{<br />
	unsigned	 data 	:	8	;	<br />
}W12_RESERVED5_DATA;<br />
<br />
// Message Data Structure <br />
union	M_TT1_UNION<br />
{<br />
	W12_RESERVED4_DATA		item1_data;<br />
	W12_SELECTED_SOURCE_DATA	item2_data;<br />
	W12_RESERVED5_DATA		item3_data;<br />
	unsigned short			buffer[32];   // Max buffer size<br />
}m_tt1;

typedef struct <br />
{<br />
 	enum	W12_SELECTED_SOURCE_DATA		 { ON,OFF }; <br />
}data02;<br />
<br />
// Message Data Structure <br />
union	M_TT1_UNION<br />
{<br />
	W12_RESERVED4_DATA		item1_data;<br />
	data02				item2_data;<br />
	W12_RESERVED5_DATA		item3_data;<br />
	unsigned short			buffer[32];   // Max buffer size<br />
}m_tt1;

POSITION pos = m_DesignList.GetFirstSelectedItemPosition();<br />
<br />
// Get all the item in the listview selected 's Design ID <br />
// and assign it to the IDArray in the following loop<br />
if (pos == NULL)<br />
	TRACE0("No items were selected!\n");<br />
else<br />
	while (pos)<br />
	{<br />
		int nItem = m_DesignList.GetNextSelectedItem(pos);<br />
		if(D_EXPORT == m_ModeFlag )			// EXPORT mode<br />
		{<br />
			// indexArr is array filled in function onInitDialog. So it contains index value as shown in line 1<br />
			IDArray[incr++] = indexArr[nItem];   -- line 3<br />
		}	<br />
		m_indexCount ++;	// Increase the counter of number of designs selected<br />
	}