QtQuick锚定语法混乱
QtQuick anchoring syntax confusion
正如我们know,锚定是这样完成的:
anchors.left: rect1.right
... 其中 rect1
是从 Item
.
派生的对象
但是 Item
QML 类型没有 right
属性。那么这种锚定语法是如何工作的呢?
But the Item
QML type doesn't have a right
property
It does. The documentation for e.g. anchors.right
links to Positioning with Anchors,表示:
In addition to the more traditional Grid, Row, and Column, Qt Quick also provides a way to layout items using the concept of anchors. Each item can be thought of as having a set of 7 invisible "anchor lines": left, horizontalCenter, right, top, verticalCenter, baseline, and bottom.
不过,我不完全确定为什么没有像常规属性那样记录它们。
参见 this and then this header 文件。 anchors.left
例如 read-only 属性 类型 QQuickAnchorLine
.
见 this and this headers。在那里你可以看到它是如何工作的。
正如我们know,锚定是这样完成的:
anchors.left: rect1.right
... 其中 rect1
是从 Item
.
但是 Item
QML 类型没有 right
属性。那么这种锚定语法是如何工作的呢?
But the
Item
QML type doesn't have aright
property
It does. The documentation for e.g. anchors.right
links to Positioning with Anchors,表示:
In addition to the more traditional Grid, Row, and Column, Qt Quick also provides a way to layout items using the concept of anchors. Each item can be thought of as having a set of 7 invisible "anchor lines": left, horizontalCenter, right, top, verticalCenter, baseline, and bottom.
不过,我不完全确定为什么没有像常规属性那样记录它们。
参见 this and then this header 文件。 anchors.left
例如 read-only 属性 类型 QQuickAnchorLine
.
见 this and this headers。在那里你可以看到它是如何工作的。