用户界面的设计
窗体的区别
l 缺少的功能
Ø 拖拉
Ø KeyPreview
Ø 图标
Ø 开始位置
Ø 透明度
Ø Accept/Cancel 按钮

| There are some other features that are missing from forms in the Compact Framework.
| For example, drag and drop, KeyPreview, and form icons are not supported.
| The StartPosition property doesn’t exist, but you can manually position forms when they load.
| You can only create rectangular, fully opaque forms.
| If you rely heavily on creating dialog forms, you’ll be disappointed to see that the Accept and CancelButton properties are missing. However, forms still have a DialogResult property, and you can manually set its value in the Click event of an appropriate button. In fact, using dialogs is a great way to control user interface process on Smart Devices as it restricts the user to a single task.