我Rectangle
填充MouseArea
,onPressAndHold()
处理程序显示第二个Rectangle
,并将drag
操作转移到Rectangle
。问题是当我将第二个Rectangle
移到DropArea
时,它不会通知任何操作(onEntered
,onExited
,onDropped
)。我试图在很多组合中做到这一点,但它从未奏效。这是一个例子,我错过了什么吗?
import QtQuick 2.0
import QtQuick.Window 2.0
Window {
id: appDrawerRoot
visible: true
width: 360; height: 360
property bool isRectVisible: false
Rectangle{
id:rect
color: "blue"
x:50; y:50
width: 50; height: 50
MouseArea{
anchors.fill: parent
onPressed: {
cloneRect.x = rect.x
cloneRect.y = rect.y
}
onPressAndHold: {
isRectVisible = true
drag.target = cloneRect
}
onReleased: {
drag.target = undefined
isRectVisible = false
cloneRect.x = rect.x
cloneRect.y = rect.y +100
}
}
}
Item{
id: cloneRect
width: 50; height:50
visible: isRectVisible
MouseArea{
id: mouseArea
width:50; height:50
anchors.centerIn: parent
Rectangle{
id:tile
width: 50; height:50
color:"black"
opacity: 0.5
anchors.verticalCenter: parent.verticalCenter
anchors.horizontalCenter: parent.horizontalCenter
Drag.hotSpot.x: 25
Drag.hotSpot.y: 25
}
}
}
DropArea {
id:dropArea
x:153
y:158
z:-1
width:100; height: 100
Rectangle{
anchors.fill: parent
color: "Green"
}
onEntered: {
drag.source.opacity = 1
console.log("ENTERED")
}
onExited: {
drag.source.opacity = 0.5
console.log("EXITED")
}
onDropped:
{
console.log("DROPPED")
}
}
}
答案 0 :(得分:2)
您的代码的主要问题是您没有设置拖动的active
属性。修改你的代码如下:
//..........................
Item{
id: cloneRect
width: 50; height:50
visible: isRectVisible
Drag.active: visible // Add this line of code
//.....................
有关更多信息,请参阅Qt示例。在Qt Creator"欢迎"屏幕命中"示例"按钮并搜索"拖放qml"。