Use the ItemFromPoint property to get the item from the point specified by the {X,Y}. The X and Y coordinates are expressed in client coordinates, so a conversion must be done in case your coordinates are relative to the screen or to other window. If the X parameter is -1 and Y parameter is -1 the ItemFromPoint property determines the handle of the item from the cursor. Use the ColumnFromPoint property to get the column from point ( when the control's header is visible ). Use the SelectableItem property to specify the user can select an item.

The following sample prints the cell's value from the cursor:

Private Sub Grid1_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
    ' Prints the cell over the cursor ( it doesn't include the inner cells )
    With Grid1
        Dim c As Long, hit As Long
        Dim h As HITEM
        h = .ItemFromPoint(-1, -1, c, hit)
        If Not (h = 0) Then
            Debug.Print .Items.CellCaption(h, c)
        End If
    End With
End Sub

The following sample prints the cell's value from the cursor ( the sample doesn't print the inner cells that are created using the SplitCell property of the Items object ) :

Private Sub Grid1_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
    ' Prints the cell over the cursor ( it doesn't include the inner cells )
    With Grid1
        Dim c As Long, hit As Long
        Dim h As HITEM
        h = .ItemFromPoint(X / Screen.TwipsPerPixelX, Y / Screen.TwipsPerPixelY, c, hit)
        If Not (h = 0) Then
            Debug.Print .Items.CellValue(h, c)
        End If
    End With
End Sub

The sample prints the cell's value from the cursor ( the sample prints the caption of the inner cells too ):

Private Sub Grid1_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
    ' Prints the cell over the cursor ( it includes the inner cells )
    With Grid1
        Dim c As Long, hit As Long
        Dim h As HITEM
        h = .ItemFromPoint(X / Screen.TwipsPerPixelX, Y / Screen.TwipsPerPixelY, c, hit)
        If Not (h = 0) Or Not (c = 0) Then
            Debug.Print .Items.CellValue(h, c)
        End If
    End With
End Sub

The following sample displays the index of the icon being clicked, when the cell contains multiple icons:

Private Sub Grid1_MouseUp(Button As Integer, Shift As Integer, X As Single, Y As Single)
    Dim i As HITEM, h As HitTestInfoEnum, c As Long
    With Grid1
        i = .ItemFromPoint(X / Screen.TwipsPerPixelX, Y / Screen.TwipsPerPixelY, c, h)
    End With
    If Not (i = 0) Or Not (c = 0) Then
        If exHTCellIcon = (h And exHTCellIcon) Then
            Debug.Print "The index of icon being clicked is: " & (h And &HFFFF0000) / 65536
        End If
    End If
End Sub

The following C++ sample displays the cell's from the point:

void OnMouseMoveGrid1(short Button, short Shift, long X, long Y) 
{
	long c = 0, hit = 0;
	long h = m_grid.GetItemFromPoint( X, Y, &c, &h );
	if ( ( h != 0 ) || ( c != 0 ) )
	{
		COleVariant vtItem( h ), vtColumn( c );
		CItems items = m_grid.GetItems();
		CString strOutput;
		strOutput.Format( "Cell: %s\n" , items.GetCellCaption( vtItem, vtColumn ) );
		OutputDebugString( strOutput );
	}
}

The following C++ sample displays the cell's from the point:

#include "Items.h"

static CString V2S( VARIANT* pv, LPCTSTR szDefault = _T("") )
{
	if ( pv )
	{
		if ( pv->vt == VT_ERROR )
			return szDefault;

		COleVariant vt;
		vt.ChangeType( VT_BSTR, pv );
		return V_BSTR( &vt );
	}
	return szDefault;
}

void OnMouseMoveGrid1(short Button, short Shift, long X, long Y) 
{
	long c = 0, hit = 0, hItem = m_grid.GetItemFromPoint( X, Y, &c, &hit );
	if ( ( hItem != 0 ) || ( c != 0 ) )
	{
		CItems items = m_grid.GetItems();
		COleVariant vtItem( hItem ), vtColumn( c );
		CString strCaption = V2S( &items.GetCellValue( vtItem, vtColumn ) ), strOutput;
		strOutput.Format( "Cell: '%s', Hit = %08X\n", strCaption, hit );
		OutputDebugString( strOutput );
	}
}

The following VB.NET sample displays the cell's from the point:

Private Sub AxGrid1_MouseMoveEvent(ByVal sender As Object, ByVal e As AxEXGRIDLib._IGridEvents_MouseMoveEvent) Handles AxGrid1.MouseMoveEvent
    With AxGrid1
        Dim i As Integer, c As Integer, hit As EXGRIDLib.HitTestInfoEnum
        i = .get_ItemFromPoint(e.x, e.y, c, hit)
        If (Not (i = 0) Or Not (c = 0)) Then
            Debug.WriteLine("Cell: " & .Items.CellValue(i, c) & " Hit: " & hit.ToString())
        End If
    End With
End Sub

The following C# sample displays the cell's from the point:

private void axGrid1_MouseMoveEvent(object sender, AxEXGRIDLib._IGridEvents_MouseMoveEvent e)
{
	int c = 0;
	EXGRIDLib.HitTestInfoEnum hit;
	int i = axGrid1.get_ItemFromPoint( e.x, e.y, out c,out hit );
	if ( ( i != 0 ) || ( c != 0 ) )
	{
		object cap = axGrid1.Items.get_CellValue(i, c);
		string s = cap != null ? cap.ToString() : "";
		s = "Cell: " + s + ", Hit: " + hit.ToString();
		System.Diagnostics.Debug.WriteLine(s);
	}
}

The following VFP sample displays the cell's from the point:

*** ActiveX Control Event ***
LPARAMETERS button, shift, x, y

local c, hit
c = 0
hit = 0
with thisform.Grid1
	.Items.DefaultItem = .ItemFromPoint( x, y, @c, @hit )
	if ( .Items.DefaultItem <> 0 ) or ( c <> 0 )
		wait window nowait .Items.CellValue( 0, c ) + " " + Str( hit )
	endif
endwith