problem with setting properties in creating dynamic objects

[aya_lawliet]

Hi,

Can someone help me regarding the creation of dynamic objects in QML?

I followed the example on this link http://doc.qt.nokia.com/4.7-snapshot...icobjects.html cause I wanted to create something similar.

I created the example as is ( Sprite.qml and main.qml ), as well as the javascript file.

var component;
var sprite;
 
 function createSpriteObjects() {
     component = Qt.createComponent("Sprite.qml");
     if (component.status == Component.Ready)
         finishCreation();
     else
         component.statusChanged.connect(finishCreation);
 }
 
 function finishCreation() {
     if (component.status == Component.Ready) {
         sprite = component.createObject(appWindow, {"x": 100, "y": 100});
         if (sprite == null) {
             // Error Handling
             console.log("Error creating object");
         }
     } else if (component.status == Component.Error) {
         // Error Handling
         console.log("Error loading component:", component.errorString());
     }
 }

var component;
var sprite;

 function createSpriteObjects() {
     component = Qt.createComponent("Sprite.qml");
     if (component.status == Component.Ready)
         finishCreation();
     else
         component.statusChanged.connect(finishCreation);
 }

 function finishCreation() {
     if (component.status == Component.Ready) {
         sprite = component.createObject(appWindow, {"x": 100, "y": 100});
         if (sprite == null) {
             // Error Handling
             console.log("Error creating object");
         }
     } else if (component.status == Component.Error) {
         // Error Handling
         console.log("Error loading component:", component.errorString());
     }
 }

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Works fine but the setting of properties x and y on line 14 does not work.

Is this a bug, or is there something I'm missing? Thank you for your help!

[aya_lawliet]

I did a workaround for this that works for me,

sprite = component.createObject(appWindow);
sprite.x = 100
sprite.y = 100

sprite = component.createObject(appWindow);
sprite.x = 100
sprite.y = 100

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I hope this will help anyone who got stuck in the same situation.

[aya_lawliet]

There is a slight problem I found regarding the workaround I mentioned above.

When you set the properties:
sprite.x = 100
sprite.y = 100
This does not mean that the properties are set upon object creation. These properties are set AFTER the object is created.

Thus, when you add custom property like:
property string mode: "auto" (in the QML file)

and updated the value for this in the script:
sprite.mode = "manual"

Upon object creation, the mode will still have "auto" value. And after the object is created, the script will then update the mode value to "manual". I just found this out while creating an application.

I haven't found a solution for setting the property value upon object creation. But when I found the solution, I will post it here.

[frankiefrank]

Playing with similar implementations, will be happy to know what you learned.