function gumptest( npc, mobile, forsale, shopping_cart )
var gflayout := {
		"page 0",
		"nodispose",
		"resizepic 0 0 5170 200 300",
		"text 40 40 50 0",
		"text 40 100 50 1",
		"text 40 160 50 2",
		"text 40 220 50 3",
		"button 100 40 249 248 1 0 0",
		"button 100 100 249 248 1 0 0",
		"button 100 160 249 248 1 0 0",
		"button 100 220 249 248 1 0 0"
		};
var gfdata := {"Buy",
	       "Sell",
               "Train",
               "Sell Bag"
               };

var choice := SendDialogGump( mobile, gflayout, gfdata );
var his_choice;
foreach key in ( choice.keys )
	his_choice := key;
endforeach

var output;
case ( his_choice )
	100: output := "The player chose the button the value of which is 100";
	200: output := "The player chose the button the value of which is 200";
	300: output := "The player chose the button the value of which is 300";
	400: output := "The player chose the button the value of which is 400";
	default: output := "The player must have canceled the gump without doing anything";

	// default means if the value is neither 1 nor any of the radio-values
	// [so the player canceled the gump without doing anything]. In this example it doesn't matter
	// whether you press the okay-button or not, the values are counted anyways. This is because
	// it is not important for this example. If you're writing a gump and want it to work correctly
	// you should embed a test if the okay-button was pressed
	// [like this: if ( choice[0] == 1 ) <- then the player has pressed the okay-button.
	// Why? You should know]
endcase



endfunction