receive signal from other qml objec(these two object don't have parent-child relation but they have common parent.).

PooyaSis

hello,i've been searching and still couldnt find answer. How can i send signal in one qml object and recive it in another object? considering that they dont have parent child relation. but they have common parents.

raven-worx

@PooyaSis
one possibility:

Item {
   Item {
     id: child1
    signal mySignal()
  } 
  Item {
     id: child2
    function mySlot() {
       ...
    }
     Component.onComplete: child1.mySignal.connect(child2.mySlot)
  } 
}

Also you may want to read this

PooyaSis

@raven-worx
thanks
but what if they are not in same file?
for example:

// common parent
item {
    Child1 {}
    Child2 {}
}

//Child1.qml
Item {
    id:child1
    Rectangle {
        id:rec1
    }
}

//Child2.qml
Item {
    id:child2
    Rectangle {
        id:rec2

        MouseArea {
            anchors.fill: parent
            onClicked: { "Some Code to change rec1 color" }
             }  
       }
}

how can I change color of rec1 from onClicked in rec2?

raven-worx

@PooyaSis said in receive signal from other qml objec(these two object don't have parent-child relation but they have common parent.).:

how can I change color of rec1 from onClicked in rec2?

Item {
    Child1 {
       id: child1
    }
    Child2 {
       id: child2
    }

    Component.onComplete: child1.mySignal.connect(child2.mySlot)
}

//Child1.qml
Item {
    id: base

   function mySlot() {
      rec1.color = "red"
   }

    Rectangle {
        id:rec1
    }
}

//Child2.qml
Item {
    id: base
    signal mySignal()

    Rectangle {
        id:rec2

        MouseArea {
            anchors.fill: parent
            onClicked: base.mySignal()
       }
}

PooyaSis

@raven-worx thanks for your help. solved.