<![CDATA[Fit the size to the parent for QQuickItem C++ Object]]>My environment is Qt 5.4 desktop MSVC2013 and QtQuick 2.4 on Windows 8.1 64bit.

I want to fill the custom qml object extended by QQuickItem on the parent and I wrote the code like this.

//QQuickItem *item;
item->setParentItem(parentItem);
(*case 1)
item->setProperty("anchors.fill", "parent");
(*case 2)
item->setProperty("width", "parent.width");
item->setProperty("height", "parent.height");

But, those didn't work. If these ways cannot be used, is there any way alternative to implementing it only by C++?

]]>https://forum.qt.io/topic/55537/fit-the-size-to-the-parent-for-qquickitem-c-objectRSS for NodeThu, 16 Apr 2026 17:47:44 GMTMon, 22 Jun 2015 13:58:42 GMT60<![CDATA[Reply to Fit the size to the parent for QQuickItem C++ Object on Wed, 24 Jun 2015 07:29:22 GMT]]>Hi @Tank2005,
AFAIK setting anchors wont work from C++ side. You have to either do it on QML side or you can calculate the x and y positions programmatically on C++ side and set them. The latter can be done following way:

child->setProperty("x",parentItem->width()/2-child->width()/2); //calculate and set
child->setProperty("y",parentItem->height()/2-child->height()/2);

Edit: Since you want to fill you can use parentItem's width and height

item->setProperty("width", parentItem.width);
item->setProperty("height", parentItem.height);
]]>https://forum.qt.io/post/279260https://forum.qt.io/post/279260Wed, 24 Jun 2015 07:29:22 GMT