I have a project, written in QML input interface, and then added to the Widget on the page, then I need to be in the Widget code, to let the QML input box to get to the focus, but always get failure,

 
The import QtQuick 2.0 
The import QtQuick. Controls 1.3 

A Rectangle {
The function loadFocus () {
Edit. ForceActiveFocus (); 
The console. The log (" test "); 
} 
Color: "blue"; 
Id: the test; 
Focus: true, 
({
The objectName: "edit"; 
Anchors. Left: the parent. Left; 
Anchors. Top: parent. Top; 
Width: 100; 
Height: 100; 
Id: edit; 
Focus: true, 
} 
} 

This is the input interface code, declare a method, let the external call, within method calls to edit, forceActiveFocus focus to make input box for

 
# include "inputwidget. H" 
# include & lt; QVBoxLayout> 
# include & lt; QPushButton> 
# include & lt; QDebug> 
# include & lt; QTextEdit> 
# include & lt; QApplication> 
# include & lt; QMouseEvent> 
InputWidget: : InputWidget (QWidget * parent) : QWidget (parent) 
{
M_pQuickView=new QQuickView (); 
M_pQuickView - & gt; SetMinimumSize (QSize (200200)); 
M_pQuickView - & gt; SetClearBeforeRendering (false); 
M_pQuickView - & gt; SetResizeMode (QQuickView: : SizeRootObjectToView); 
M_pQuickView - & gt; SetSource (QStringLiteral (" QRC:/InputWidget. QML ")); 

QWidget * container=QWidget: : createWindowContainer (m_pQuickView, this); 
The container - & gt; SetMinimumSize (QSize (200200)); 
QPushButton * BTN=new QPushButton (); 
BTN - & gt; SetText (" test "); 
The connect (BTN, SIGNAL (clicked (bool)), and this, SLOT (onClick ())); 
QVBoxLayout * layout=new QVBoxLayout; 
Layout - & gt; AddWidget (BTN); 
Layout - & gt; AddWidget (container); 
Layout - & gt; SetMargin (0); 
SetLayout (layout); 
} 

Void InputWidget: : onClick () {
QObject * obj=(QObject *) m_pQuickView - & gt; RootObject (); 
QMetaObject: : invokeMethod (obj, "loadFocus"); 
} 

Is this widget code, add the QML input box, and create a button, when click the button to call the QML method, to set the focus,


But has been set up failure,

STH over and over again for a long time, did not solve, the feeling is you don't have to find some key points, such as when to invoke the QML code by c + + is that of the thread is give priority to the thread, and is in what condition, the input box is needed to set up successful,

At first I also simulated a mouse events to let the input box for focus, but still failed,

CodePudding user response:

Hang up one afternoon, not a single reply, because the problem is very low?

CodePudding user response:

Sorry, turn to this, I am very don't understand the QML, I once met the focus is, however, I was found by traversing the reason, that is to say, I am all can get focus traversal of the current application of the component, who see the focus in the body and then find the reason, specific I remember is the qApp - & gt; CurrentFocus similar function

CodePudding user response:

Want to ask next the building Lord, how to implement the focus domain switching in the qML?

CodePudding user response:

First call container - & gt; SetFocus () should can solve your problem