This function determines whether grid cell's check box is checked.
SapGui.bdh
SapGuiGridIsCheckboxChecked( in sControlId : string; 
                             in nRow       : number;
                             in sCol       : string ) : boolean; 
               	 | Parameter | Description | 
|---|---|
| sControlId | The unique id of the control. | 
| nRow | The row of the cell. | 
| sCol | The column of the cell. | 
transaction TMain
  var
    bChecked : boolean;
    sConnID : string;
  begin
    // Connecting to SAP
    sConnID := SapGuiOpenConnection( " /SAP_CODEPAGE=1100 /FULLMENU 10.5.2.132 0 /3");
    SapGuiSetActiveConnection(sConnID);
    SapGuiSetActiveSession("ses[0]");
    // SAP
    SapGuiSetActiveWindow("wnd[0]", "SAP", SAPGUI_MATCH_ExactNoCase);
    SapGuiWindowAction(SAPGUI_WND_MAXIMIZE);
    SapGuiLogon("ddic", "*******", "000", "");
    bChecked := SapGuiGridIsCheckboxChecked("/usr/tab/grid23", 0, 0 );
  end TMain;