为软件换肤,是一个永恒的主题,winforms换肤,现在b/s也换肤。呵呵。
在devexpress中,换肤就很简单,不需要我们自己去制造皮肤,官文就有很丰富的皮肤包。下面来讲解一下这个问题。
注意,我这儿用的是DevExpress 8.1.5,在老版本中可能不支持。如果是7.x的版本,请见demo中的源代码。
第一步:让所有窗体都从DevExpress.XtraEditors.XtraForm继承。
第二步:添加两个引用:
DevExpress.BonusSkins.v8.1
DevExpress.OfficeSkins.v8.1
第三步:在软件的入口Program类的main函数的第一行代码前加上:
DevExpress.UserSkins.BonusSkins.Register();
DevExpress.UserSkins.OfficeSkins.Register();
DevExpress.Skins.SkinManager.EnableFormSkins();
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new FormMain());
第四步:每个窗口放个DefaultLookAndFeel控件,
第五步:软件往往有个设置皮肤的地方,这个地方往往是需要枚举出所有皮肤的,把皮肤全部枚举出来放到一个ComboBoxEdit中,代码如下:
foreach (DevExpress.Skins.SkinContainer skin in DevExpress.Skins.SkinManager.Default.Skins)
cmbAppStyle.Properties.Items.Add(skin.SkinName);
第六步:设置皮肤,怎样设置皮肤呢,只需设置每个窗口的DefaultLookAndFeel即可,代码如下:
this.defaultLookAndFeel1.LookAndFeel.SkinName = cmbAppStyle.EditValue.ToString();
现在,大部分的问题都解决了,最后一个问题,怎样在设置皮肤时,将所有已打开的窗口的皮肤都改成对应的样式呢?(在DevExpress8.1.5中, 这个功能自带,但是,并不完全,有缺陷)最基本的方法当然是观察者模式,但是,我想到在winforms中应当有枚举所有已打开窗口的方法。果然,找到 了:Application.OpenForms,再说明一下,为了能统一管理所有窗口的皮肤,我写了个基类,BaseForm,它继承自 DevExpress.XtraEditors.XtraForm。在BaseForm中放个DefaultLookAndFeel。并创建一个公共的属 性DefaultLookAndFeel。然后,在设置皮肤的地方写上:
foreach (Form f in Application.OpenForms)
if (f is TimerApp.Forms.BaseForm)
(f as TimerApp.Forms.BaseForm).DefaultLookAndFeel.LookAndFeel.SkinName = value;
但是,这个方法有问题,出错了,说什么“OpenForms集合已变化,无法枚举!”,郁闷。只好用观察者模式了。被观察者的类如下:
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