在Window Builder for Eclipse的编辑视图中，如何创建足够大的JPanel？

Question

I'm trying to build a java GUI with SWING in Window Builder using Eclipse IDE. What I want to do is to create a long form. I create a JPanel, I can adjust the size of this JPanel in the editing area by dragging the boder of the panel as normal, But the problem I found is that no matter how far I drag down the bottom border, the heigth of this JPanel won't go any further.

I found some answers saying that the edit window of Window Builder won't render any components falling outside of the bounds of the display size. That means in the edit area of Window Builder in Eclipse, I can only create and see a JPanel whose maximum size equals to my display resolution?

That's not very convenient especially when you want to edit GUI in a WYSIWYG way. Then what can we do when people really need a big GUI?

Answer 1

Typically in cases like this we use a JScrollPane with the JPanel inside. You can then make those panels as long/wide as you want, and it will auto generate scroll bars as required. The IDE will let you scroll these bars in the WYSIWYG editor so you can place controls further down.

See the official documentation on how to properly implement them.

Answer 2

您不能创建一个大于屏幕可见区域并能够看到它的JPanel，而要做的是创建一个您想要的大小的JPanel，然后将其放入一个JScrollPane中，该JScrollPane具有滚动条以显示一部分放入的组件（在这种情况下为JPanel）中，如果您使用的是IDE，则可以创建JScrollPanel并确保滚动条的属性未设置为NEVER，可以将其设置为VERTICAL_SCROLLBAR_​​AS_NEEDED以进行水平滚动HORIZONTAL_SCROLLBAR_​​AS_NEEDED进行垂直滚动滚动，然后创建一个JPanel并将其拖动到您之前创建的JScrollPanel内，最后通过将其大小属性更改为所需的大小来调整JPanel的大小