QUiLoader and window position

d.oberkofler

I'm using QUiLoader to dynamically load (and modify) UI resources.
Everything works fine except for the position of the actual window.
The and x and y coordinates are always returned as 0 and I cannot understand why.

In the following example I get x=0 and y=0 instead of 100:

@<ui version="4.0" >
<author></author>
<comment></comment>
<exportmacro></exportmacro>
<class>Dialog</class>
<widget class="QDialog" name="Dialog" >
<property name="geometry" >
<rect>
<x>100</x>
<y>100</y>
<width>400</width>
<height>300</height>
</rect>
</property>
<property name="windowTitle" >
<string>Dialog</string>
</property>
<widget class="QDialogButtonBox" name="buttonBox" >
<property name="geometry" >
<rect>
<x>290</x>
<y>20</y>
<width>81</width>
<height>241</height>
</rect>
</property>
<property name="orientation" >
<enum>Qt::Vertical</enum>
</property>
<property name="standardButtons" >
<set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
</property>
</widget>
</widget>
<pixmapfunction></pixmapfunction>
<resources/>
<connections>
<connection>
<sender>buttonBox</sender>
<signal>accepted()</signal>
<receiver>Dialog</receiver>
<slot>accept()</slot>
<hints>
<hint type="sourcelabel" >
<x>248</x>
<y>254</y>
</hint>
<hint type="destinationlabel" >
<x>157</x>
<y>274</y>
</hint>
</hints>
</connection>
<connection>
<sender>buttonBox</sender>
<signal>rejected()</signal>
<receiver>Dialog</receiver>
<slot>reject()</slot>
<hints>
<hint type="sourcelabel" >
<x>316</x>
<y>260</y>
</hint>
<hint type="destinationlabel" >
<x>286</x>
<y>274</y>
</hint>
</hints>
</connection>
</connections>
</ui>
@

rich

Without showing the code you use to load the widget we can't help. You should also remember that the window won't have a position unless it is shown, and that layouts won't move the child widgets until this point too.

d.oberkofler

This is the Qt testcase i have used to isolate the problem and pos is always returned as (0,0):

@
QFile aFile(":/dialog.ui");
bool aOK = aFile.open(QIODevice::ReadOnly | QIODevice::Text);
Q_ASSERT(aOK);

QWidget* aParentWidget = new QWidget(0);
Q_ASSERT(aParentWidget);

QUiLoader aLoader;
QWidget* aWidget = aLoader.load(&aFile, aParentWidget);
Q_ASSERT(aWidget);

qDebug() << aWidget;
qDebug() << "title=(" << aWidget->windowTitle() << ")";
qDebug() << "pos=(" << aWidget->pos() << ")";
qDebug() << "frameSize=(" << aWidget->frameSize() << ")";
@

goetz

You must show the widget first to get a valid position. Rich already mentioned this.

Insert in line 11:

@
aWidget->show();
@

Be aware that widgets without a parent are shown centered relative to the screen, and a widget with parent centered relative to its parent.

d.oberkofler

I understand but this is exactly my problem.
I would need to get the predefined position before showing the widget. In my use case I actually never show it but rather create anther one based on the first one.
Is there any workaround?

goetz

The position is not predefined, but calculated on calling show(), as it depends on the widgets size and the screen size or the position of the parent window.

d.oberkofler

So I guess the only workaround to get the actual position from the UI File would be to "manually" parse it the XML representation. Am I right?