学习Extjs4 (2-2) 限制拖动范围的窗口

var constrainedWin, constrainedWin2;
var win2 = Ext.create('widget.window', {
height: 200,
width: 400,
x: 450,
y: 450,
title: '限制拖动范围的窗口',
closable: false,
plain: true,
layout: 'fit',
items: [constrainedWin = Ext.create('Ext.Window', {
title: '限制拖动范围的窗口',
width: 200,
height: 100,
x: 1000,
y: 20,
constrain: true,
layout: 'fit',
items: {
border: false
}
}), constrainedWin2 = Ext.create('Ext.Window', {
title: '限制标题拖动范围的窗口',
width: 200,
height: 100,
x: 120,
y: 120,
constrainHeader: true,
layout: 'fit',
items: {
border: false
}
}), {
border: false
}]
});
win2.show();
constrainedWin.show();
constrainedWin2.show();