alwaysOnTop(onTop: Boolean);
The alwaysOnTop method of the Form class enables you to place a visible form above all other forms on the desktop when called with the onTop parameter set to true.
The form remains on top even after another form is activated. To restore the normal behavior, call the alwaysOnTop method with the onTop parameter set to false. (This parameter is set to false, by default.)
Calling the alwaysOnTop method for an MDI child form has no effect.