#2
freeforever2020-04-29 16:24
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Pen A = new Pen(Color.Black, 2);
Pen B = new Pen(Color.White, 3);
B = A;
A.Color = Color.Red;
Pen B = new Pen(Color.White, 3);
B = A;
A.Color = Color.Red;
上述代码,A更改了,B也会随之更改,怎么让A管A B管B?