如何创建视图的对象? [英] how to create an object of a view ?

问题描述

实际上，我在视图中所做的绘制很少，现在我想将视图中的所有内容收集到一个对象中，以便可以通过序列化方法将其写到磁盘上?

actually I have done few drawing in the view and now i want to collect everything in view in to an object so that i can write it on the disk by serialize method ?

推荐答案

亲爱的Pradeep，

您的思维方式不是一个好的方法.正确的方法是在CDocument类中定义将包含图形对象属性的变量，并在文档类中重写CObject :: Serialize成员函数以序列化所有变量.并使用此初始化变量在CView :: OnDraw()中绘制对象.

例如.要绘制矩形，您将需要在CDocument中使用CRect变量，并在CView :: OnDraw()中使用此变量绘制Rectangle.在CDocument :: Serialize()中，使用CRect变量存储矩形.

Dear Pradeep,

The way you are thinking is not a good approach. The correct way is to define the variable in your CDocument Class which will holds a properties of your graphical object and Override the CObject::Serialize member function in your document class to serialize all the variable. And use this initialized variable to draw the object in CView::OnDraw().

eg. To draw a rectangle you will need CRect variable in CDocument and in CView::OnDraw() use this variable to draw the Rectangle. In CDocument::Serialize() use CRect variable to store the rectangle.

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