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 }
}
					

To create a rect value, specify it as a "x, y, width x height" string:

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

Or use the 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 .

When integrating with C++, note that any QRect or QRectF 值 passed into QML from 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 Value Types .

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