Java开发网 - [求助]layout题目一道

Topic: [求助]layout题目一道

1.[求助]layout题目一道

Posted by: zip
Posted on: 2002-08-02 13:43

Which statement is true?
A. A grid bag layout can position components such that they span multiple rows and/or columns.
B. The “North” region of a border layout is the proper place to locate a menuBar component in a
Frame.
C. Components in a grid bag layout may either resize with their cell, or remain centered in that cell at
their preferred size.
D. A border layout can be used to position a component that should maintain a constant size even
when the container is resized.
Answer: A
C好像也是对的？错在哪里啊？

2.回复：求助 [Re: zip]

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Posted by: yamakasy
Posted on: 2002-08-02 22:23

你好，gridbaglayout这种布局格式，是在gridlayout的基础上进化而来的，其实gridbaglayout是通过创建一些静态的grid的cell来分配空间，具体的是通过你的指定来决定有多少cell，所以基本原理还是gridlayout,这个题目中
c的remain centered in that cell at their preferred size不对，其中preferred size意思是你指定的大小

个人观点，请多指教

3.回复：求助 [Re: zip]

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Posted by: smartzhao
Posted on: 2002-08-03 02:55

zip wrote:
Which statement is true?
A. A grid bag layout can position components such that they span multiple rows and/or columns.
B. The “North” region of a border layout is the proper place to locate a menuBar component in a
Frame.
C. Components in a grid bag layout may either resize with their cell, or remain centered in that cell at
their preferred size.
D. A border layout can be used to position a component that should maintain a constant size even
when the container is resized.
Answer: A
C好像也是对的？错在哪里啊？

去查API这种问题自己就能解决的!!!

4.回复：求助 [Re: zip]	Copy to clipboard
Posted by: zip Posted on: 2002-08-03 09:55 大家好！ remain centered in that cell at their preferred size中的preferred size我觉得应该是合适的大小的意思，并不是说指定的大小。我也看过api，但是还是不知道错在哪才来这里请教大家的。请各位大虾赐教！

5.回复：求助 [Re: zip]	Copy to clipboard
Posted by: yamakasy Posted on: 2002-08-03 10:28 preferred size是合适的大小的意思,它主要是有装载它的layout managerr决定，比如说一个Button填充了3个grid如何能做到remain centered in that cell at their preferred size.

6.回复：求助 [Re: zip]	Copy to clipboard
Posted by: zip Posted on: 2002-08-03 11:16 但是题目中是说“may“可以，而不是说一定是这样。当一个component放在一个cell中就没问题啊。可以通过设置fill的值来实现c中所说的那样。

7.回复：求助 [Re: zip]	Copy to clipboard
Posted by: yamakasy Posted on: 2002-08-03 11:45 我对这个题目是有点理解不透彻！ Components in a grid bag layout may either resize with their cell, or remain centered in that cell at their preferred size 这个either or因该是：不是... 就是...的意思吧！所以。。

8.回复：求助 [Re: zip]	Copy to clipboard
Posted by: zip Posted on: 2002-08-03 11:59 谢谢了，始终觉得那个may either... or... 不是很明白。

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Posted by: yamakasy Posted on: 2002-08-03 12:03 没想到原因全都在英语上啊！