rect QML Value Type

一个带有 x、y、宽度和高度属性的值。更多

详细说明

rect 类型指的是带有x 、y 、width 和height 属性的值。

rect 类型的属性默认为Qt.rect(0, 0, 0, 0) 。这是一个位于坐标原点的空矩形。

例如，要读取Item childrenRect 矩形类型属性的width 和height 值：

Rectangle {
    width: childrenRect.width
    height: childrenRect.height

    Rectangle { width: 100; height: 100 }
}

要创建rect 值，请将其指定为 "x, y, width x height "字符串：

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

或使用Qt.rect() 函数：

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

rect 类型还公开了只读的left,right,top 和bottom 属性。这些属性与C++ counterparts 相同。

与 C++ 集成时，请注意从 C++ 传入 QML 的任何QRect 或QRectF 值都会自动转换为rect 值，反之亦然。当rect 值传入 C++ 时，会自动转换成QRectF 值。

另请参阅 QML 值类型。

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