QML and Qt Quick

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  Regarding multimedia file qmlmultimediaplugin
  • krishkn

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  i hv installed Qt Mobility 1.1 in my windows xp,but unable to import QtMultimediaKit or Qt.multimedia in my qml app....
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  TabWidget - why using .opacity instead of .visible property?
  • Cezary Tomczak

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  Hi, It's probably just habit -- in our QML demos and examples we often fade things in and out, which is possible with opacity but not with visible. Regards, Michael
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  QML Video Element crash
  • Mitricho

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  Hi, It shouldn't be crashing. Could you add a bug report via "bugreports.qt.nokia.com":bugreports.qt.nokia.com for this? Thanks, Michael
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  Why is QtMobility required to use Multimedia in QML?
  • ashwindas

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  I strongly agree with whatever Ashwin had said,even i needed multimedia package for QML but in order to get that i need to install QTMobility first,which was so painful (when errors appears while compiling, u dont knw wht to do) ,so many environmental variables need to be set, atleast QTcreator is better in tht ;)
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  [Solved] accessing file:/// outside the .QRC
  • nizeguy

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  Ok, for people who are looking for a solution, it turns out it is pretty easy. Just explicitly prepend "file://" to files path outside the qrc.
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  Implementing States with QML
  • pixtur

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  Hi, thanks for these answers. Most of them makes sense. However, I am still convinced that transitions and states are not so closely related as it is enforced by QML. To me, states are more about logic, than about properties and assigned transitions. Thus the most important thing would not be transitions but onEnter, onLeave, onUpdate handlers and of course custom methods/actions. From these I could easily invoke any transition, which would more become a collection of Animations. This would nicely decouple the two things, and I could even reusing transitions for different states or objects or even refactor them into a separate file. I have to try your key-press example. I guess, I'm slowly understanding what you are doing there. :-) Powerful stuff, once you understood QML's potential...
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  Stopping all the animation at a time in QML ?
  • krishkn

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  Depending on the circumstance, you might also be able to bind the running property of each animation to the same property (e.g. property bool animationsEnabled). Stopping all the animations is then just a matter of setting that property to false.
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  [Solved] Flipable: how to trigger flipping from outside?
  • strekazoid

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  Turned out that you can do this directly from the other component just by referring to the name of Flipable component. Awesome.
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  Recommended approach for displaying tooltips
  • cbrake

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  [quote author="korzhp" date="1289378399"]look at http://qt.gitorious.org/qt-components[/quote] As korzhp said, take a look at Qt-Components. There you'll find a QML implementation of the Mx toolkit; in src/Mx/ you find the implementation of a tooltip. Run examples/mx/test.qml to see it in action in the Mx widgets gallery :-)
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  XOverlay on a QDeclarativeItem
  • mbarclaygmail.com

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  If you build the QML app and run it, you will see a debug output like "Run ./overlay 12345" Go over to your overlay build, and run that command. The Qt app will be replaced with the test pattern, but you can still click the little Rectangle in the GUI. In the Qt app, I even try to lower the overlay QWidget at line 13, but still the XOverlay covers the entire window. I want the little red rectangle from main.qml to be on top of the overlay QWidget. For now, I am calling overlay->show() as an independent window, so I wind up with two windows for my app. That works, but it would be great to have the overlay inside Qt Quick so I could use state transitions and animations on its size and shape. Let me know if you figure something out! Regards, Matt
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  Qt controls in QML
  • Sreejumon

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  Tobias, yeah, something like that. Came from MFC or something near it. bq. Vincent Vega: "And you know what they call a ... a ... a Quarter Pounder with cheese in Paris?" Jules: "They don't call it a Quarter Pounder with cheese?" Vincent Vega: "No man, they got the metric system. They wouldn't know what a Quarter Pounder is." Jules: "Then what do they call it?" Vincent Vega: "They call it a "Royale" with cheese."
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  [Solved] Simple Flickr viewer - no pictures displayed
  • strekazoid

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  Nevermind, got it :D The problem was in nameSpaceDeclaration - it should be like this: @namespaceDeclarations: "declare default element namespace 'http://www.w3.org/2005/Atom';"@
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  ListView: Long press and release to initiate a grab, move mouse to scroll, then click to release
  • mbarclaygmail.com

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  I solved this with a little help from C++. Using rootContext->setContextProperty(), I created a C++ class with Q_INVOKABLE methods that: @setGrabCursor(bool doit) const { if(doit) QApplication::setOverrideCursor(QCursor(Qt::ClosedHandCursor)); else QApplication::restoreOverrideCursor(); }@ From my app, when I detect a long press on my ListView delegate, I call setGrabCursor(true) and make a full screen mousearea active that marks mouse events as accepted. I tie the mouse y coordinate to the listview contentY inside of a onPositionChanged() handler. On single click of the mousearea, I call setGrabCursor(false).
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  Buttons in a Flickable item
  • jmoellmer

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  Thanks! This solved all of my issues!
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  How should I deploy an application that uses Qt.labs.particles?
  • elricbk

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  Thanks a lot, it works. It was one of the variants of directory structure which I missed.
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  Regarding QML
  • krishkn

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  krish, there is a "TV Tennis" example that ships with Qt 4.7.1, chk the sources ... that might help
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  Keyboard focus. Bug in the documentation?
  • kibsoft

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  The reason for the duplicated ids is indicated in the text below the example: [quote] The right hand side of the example shows the expanded code - the equivalent QML without the use of the component MyWidget. [/quote] The code is a theoretical expansion of the code in the left column; it's not real, usable code. With regards to the focus being on the second rectangle, the docs above the example code states: [quote] Here we create two instances of our previously defined component, and set the second one to have focus. [/quote] so this seems ok. However if there are problems in the docs they should definitely be reported at http://bugreports.qt.nokia.com.
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  Font property styling
  • korzhp

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  You'll need to set the individual font properties like font.family, font.pointSize etc. instead of just setting 'font'. You may be interested in this: "http://developer.qt.nokia.com/wiki/QmlStyling":http://developer.qt.nokia.com/wiki/QmlStyling
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  Qt Mobility QML Video Element plugin example
  • Duff

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  hi. You might be interested in this: "Multimedia QML Plugin":http://doc.trolltech.com/qtmobility-1.1.0-beta/qml-multimedia.html
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  Two line elided Text
  • bunjee

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  Thanks guys.
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  Best way to populate/update/delete info from a list(ListView/ListModel) from C++
  • 2beers

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  Hi, If the model is primarily going to be manipulated from C++, you could also consider writing a custom QAbstractListModel subclass (you'll need to handle the threading yourself though) Regards, Michael
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  ListView and onCurrentIndexChanged
  • 2beers

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  You could only set root.currentIndex once the view has stopped moving: @ onCurrentIndexChanged: if (!moving) root.currentIndex = currentIndex onMovingChanged: if (!moving) root.currentIndex = currentIndex@
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  [Solved] preserve original aspect ratio on Image
  • 2beers

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  2 beers and cheers to u 2beers :p glad it worked :)
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  Qt components questions
  • 2beers

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  [quote author="2beers" date="1288996077"] With other words, I can create my own PushButton using QML Elements, but it will be better to use an official pre-defined PushButton? [/quote] Yes, you can create your own PushButton (this is the way to go today). In the future, there will be the option to use the "official" one or keep using yours. Advantages of a "official" component: you won't need to maintain this code by yourself, probably more features, etc. [quote author="2beers" date="1288996077"] I found that qt components depends on meego touch library, may I ask why? [/quote] If you build the MeeGo configuration, yes, it depends on libmeegotouch. However, if you take a look at the Mx components you'll find a set of components with the look & feel of the Mx toolkit without any external dependency. More details are in the README file located in the root of the project. [quote author="2beers" date="1288996077"] aren't qt components build using qml elements? isn't qml cross-platform? Qt components will be meego specific or they will be used on other platforms? if yes will they look the same as on meego or they'll have the same look as native widgets? [/quote] The components may have a part of code in C++, it is expected. The point is: You are assuming "MeeGo Touch integration == Qt-Components", what is not true. The MeeGo touch integration aims to provide an API to allow the development of applications with QML integrated with MeeGo. It is at the same time an initial implementation of how the general components would be and an example of platform integration. Remember, Qt-Components is still work in progress, there are plans to separate the repository to make it easier to understand and to make clear the difference between what is Qt Components and what is a platform integration. (Maybe my answer wasn't clear enough, I'm sleepy...)
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  FolderListModel example showing just one file
  • lawicko

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  Forget it, my view delegate was producing items that filled the view port, this is why only one item was visible.
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  Error with QML demo minehunt on OS X
  • 2IZI4U

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  Yes that's right, I have forget that QML is after all just a QWidget (if I'm right) so I can put it in my Qt desktop project. For that I will need an exemple ... like minehunt ;) At least I can read the source code :D
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  Qt.multimedia 1.0 package
  • krishkn

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  is "this ":http://doc.qt.nokia.com/qt-mobility-snapshot/installation.html what you are looking for ?
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  QML Linux library dependences
  • Schneidi

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  Hi, If they are working fine from Creator, but not from qtdemo, running with "-graphicssystem raster" may help (this is set by default when running qmlviewer/qmlobserver, but not when running qtdemo). Regards, Michael
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  A few questions/issues related to Qt Declarative in Qt 4.7.0
  • kleimola

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  Kim informed me that the include order issue above has been addressed and is fixed in Qt 4.7.1
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  Ad Hoc Charting Help
  • kyleplattner

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  Hi, In the above code, it looks like each of the newly created objects might have its x-position bound to the same "global" variable, moveOver. If that is the case, when you increment moveOver all of the items would move to the new position (which might look like the previous items were being deleted). If that is the problem, "assigning the x in Component.onCompleted":http://doc.qt.nokia.com/4.7/qdeclarativejavascript.html#property-assignment-vs-property-binding should fix it. Regards, Michael
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  [Solved] ListView Custom snapMode
  • 2beers

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  never mind. I found the solution. for those who are interested: "preferredHighlightBegin":http://doc.qt.nokia.com/4.7/qml-listview.html#preferredHighlightBegin-prop
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  Linking QML plugins statically
  • CuteiOS

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  Didn't find a way that works for linking static plugins. However, you can include the plugin source in your project and use qmlRegisterType().
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  Qml+browser
  • niqt

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  AFAIK, there is no plan for an official browser plugin. At least it was the position in the last time I saw a developer talking about this subject, but it was in the first semester, don't know if the plans changed since then... EDIT: "a developer talking about this subject" == "http://lists.trolltech.com/pipermail/qt-qml/2010-April/000213.html":http://lists.trolltech.com/pipermail/qt-qml/2010-April/000213.html =)
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  TeamCity Dashboard with QML
  • jstockhausen

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  Building QML Applications resolution independent
  • 2beers

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  Indeed, probably anchor layouts is what you want. If you want, as you said, components to be enlarged only on vertical, you can write, for instance: @ Item { id: rootItem Rectangle { id: anchoredRectangle anchors.top: parent.top anchors.topMargin: 17 anchors.bottom: parent.bottom anchors.bottomMargin: 10 anchors.horizontalCenter: parent.horizontalCenter // or, for example: anchors.right: parent.right } } @ This way the Rectangle will be enlarged only on vertical axis when Item is enlarged. Is something like this what you want?
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  .qmlproject file question
  • kyleplattner

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  Well, I don't know it. But it's interesting that all examples in Qt declare as directories for qml files only the current directory, although many of them have qml files in subdirectories and Qt Creator still find them. Maybe one only has to declare the root directory. Nevertheless, if a .qmlproject file uses the same syntax as a general qml file, then you can specify more than one directory in this manner: @ QmlFiles { directory: [ 'a directory', 'another directory'] } @
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  Cannot load video elements in MS windows
  • nizeguy

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  Loader Element
  • kyleplattner

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  Thanks for the help.
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  Video and Audio elements
  • 2beers

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  Instructions for getting Qt Mobility are here: "http://doc.qt.nokia.com/qt-mobility-snapshot/installation.html":http://doc.qt.nokia.com/qt-mobility-snapshot/installation.html The second question is outside of my scope, sorry.
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  Changing rectangle position that is depending to another rectangle position
  • 2beers

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  Are you looking for blueRectangle to initially be positioned at rectRectangle.x + 120, but not bound to it? (so changing redRectangle.x does not cause blueRectangle to move?) In that case you could either use an absolute value for the position of blueRectangle, or assign a value to blueRectangle.x at component completion: @ // this assigns a value, and does not establish a binding Component.onCompleted: blueRectangle.x = redRectangle.x+120 @