[Interest] Slider value question

[Damian Ivanov]

Sry again, it worked, but now
                    Slider {id:opacitySlider; minimumValue:30;
maximumValue:100; stepSize:1; }
                    Binding {target:testSettings;
property:"testOpacity"; value:opacitySlider.value} }
this works no loop, but the slider is by default set to 0.0 but the
initial value should represent: testSettings.testOpacity

How is that achieved?

2013/12/6 Damian Ivanov <damianatorrpm at gmail.com>:
> Hi Gabriel,
>
> Thanks! Worked perfectly :)
>
> 2013/12/6 deDietrich Gabriel <Gabriel.deDietrich at digia.com>:
>> Hi Damian,
>>
>> On Dec 6, 2013, at 11:58 AM, Damian Ivanov <damianatorrpm at gmail.com> wrote:
>>
>> I have a question regarding the Slider element form Controls:
>>                    Slider {
>>                        minimumValue: 30
>>                        maximumValue: 100
>>                        stepSize: 1
>>                        value: mySettings.myValue
>>                    }
>> should myValue by updated when I slide the slider? Because my value
>> does not. I need to add
>>                        onValueChanged: mySettings.myValue = (value)
>> which results in a binding loop. What is the proper way to do it?
>>
>>
>> Yes, this is normal. Bindings only work in one direction.
>>
>> What you want to do is,
>>
>> mySlider.value = mySettings.myValue
>>
>>
>> where ‘mySlider’ is the slider above. You should do this when both the
>> slider and your settings object are complete.
>>
>> To update the settings, you can do it continuously with, e.g., a binding
>> object,
>>
>> Binding {
>> target: mySettings
>> property: “myValue”
>> value: mySlider.value
>> }
>>
>>
>> or only once, when you want to save your settings. For instance,
>>
>> onSaveSettingsNow: mySettings.myValue = mySlider.value
>>
>>
>> where ‘saveSettingsNow’ is some signal you emit at the right moment.
>>
>> Best regards,
>>
>> Dr. Gabriel de Dietrich
>> Senior Software Developer
>> qt.digia.com
>>
>>
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