Window with buttons?

Window with buttons?

How do you create this blue window with buttons to choose something? Like in the map of the night-elf campaign in which Terande falls into the river (you had choose which way to go - the safe or the dangerous one).

it's called a Dialog Menu

Melee Initialization
    Events
        Map initialization
    Conditions
    Actions
        Dialog - Create a dialog button for Dialog labelled This is a dialog
        Dialog - Create a dialog button for Dialog labelled This is a dialog bu...
        Set Button_1 = (Last created dialog Button)
        Dialog - Show Dialog for Player 1 (Red)

ofcourse, the first 'dialog button' should be 'change name of 'dialog' to 'x'.

Well i hate using the X and Y

It confuses me when someone is using them!