rect QML Value Type

a value with x, y, width and height attributes. 更多...

详细描述

The rect type refers to a value with x , y , width and height 属性。

Properties of type rect are Qt.rect(0, 0, 0, 0) by default. This is an empty rectangle at the coordinate origin.

For example, to read the width and height values of the Item childrenRect rect-type property:

Rectangle {
    width: childrenRect.width
    height: childrenRect.height
    Rectangle { width: 100; height: 100 }
}

要创建 rect value, specify it as a "x, y, width x height" string:

CustomObject { myRectProperty: "50,50,100x100" }

或使用 Qt.rect () 函数：

CustomObject { myRectProperty: Qt.rect(50, 50, 100, 100) }

The rect type also exposes read-only left , right , top and bottom attributes. These are the same as their C++ counterparts .

集成 C++ 时，注意任何 QRect or QRectF 值传入 QML 来自 C++ is automatically converted into a rect value, and vice-versa. When a rect value is passed to C++, it is automatically converted into a QRectF 值。

另请参阅 QML 值类型 .

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