Qt 5.11.1 & Qt Creator 4.7.0, Windows 10
Create a maximized window, click the button (use showMinimized() or visibility = Window.Minimized) to minimized it.
Then click the application icon in taskbar, the window supposed to show maximized. But, it's always windowed instead of maximized.
If I click the system "minimize button" top-right corner, the window can restore to maximized.
main.qml:
import QtQuick 2.9
import QtQuick.Controls 2.2
import QtQuick.Window 2.3
Window {
visible: true
width: 640
height: 480
Component.onCompleted: showMaximized()
Button {
anchors.centerIn: parent
onClicked: {
showMinimized()
// visibility = Window.Minimized
}
}
}
Related
I have an issue with Popup (default qml class) not being modal, despite modality set to true and closePolicy to NoAutoClose.
The problem occurs when I open the Popup by clicking a standard qml button. After opening Popup, a lengthy operation is performed, then Popup is closed.
When operation is running, whole application and the Popup itself reacts to mouse clicks. But it doesn't close the Popup. Instead it somehow clicks the button, that opened the Popup again. That shouldn't happen since my Popup is modal.
import QtQuick 2.11
import QtQuick.Window 2.11
import QtQuick.Controls 2.4
ApplicationWindow {
id: main_window
visible: true
width: 800
height: 500
Item {
anchors.fill: parent
Popup {
id: blockingPopup
width: 300
height: 50
modal: true
focus: true
closePolicy: Popup.NoAutoClose
}
Button {
text: "Btn"
onClicked: {
console.log("clicked")
blockingPopup.open();
cppModel.lengthyOperation()
blockingPopup.close();
}
}
}
}
To summarize it again: the button is somehow clicked when I click outside (or even inside) the modal Popup when it is displayed and the operation is running.
Qt 5.12.0, Linux Mint 19.2
Problem was in QCoreApplication::processEvents() that was in my cpp model function. It was causing clicks on a modal popup to be registered as clicks on button.
In Qt 5.15 Quick 2 code, setting a QtQuick.Dialogs FileDialog visible property to true causes it to animate onto the screen in a "blorping" motion. I am developing a Gantt chart where clicking on an item in the timeline will bring up a window to edit its properties. Is there a way to not just have the Frame/Window appear instantly but instead to "blorp" out of the item clicked like the FileDialog does from the top of the window? I notice that the shape and interior controls of the FileDialog are morphed and then solidify to indicate that the dialog is being introduced and which window it is coming from. In my case I hope to have the window pop out of the control it will edit the properties of and, when finished, squirt back inside to reinforce that those properties are being pushed into the item being edited. Is this possible?
import QtQuick 2.15
import QtQuick.Window 2.15
import QtQuick.Dialogs 1.2
import QtQuick.Controls 2.5
Window {
visible: true
width: 640
height: 480
title: qsTr("Hello World")
Button
{
onClicked: chooseFile.visible = true
text: "Click Me"
}
FileDialog
{
id: chooseFile
title: "Save Me!"
//folder: shortcuts.home
selectExisting: true
}
}
This post is a copy of a message I already sent on the Qt forum but I couldn't get an answer.
You can find the original post here: https://forum.qt.io/topic/113890/prevent-mousearea-s-positionchanged-signal-to-propagate-in-scrollview/4
If the link is dead, everything is copied below:
I am trying to handle a positionChanged signal in a MouseArea (to create kind of a drag&drop effet) that is in a ScrollView.
My problem is that after the mouse travelled a short distance, the parent ScrollView seem's to get the focus (the scrollbar appears) and I stop to receive positionChanged signals.
The objective would be to receive the positionChanged signal (even if the mouse gets out of my MouseArea & over the ScrollView as long as my left mouse button stays pressed) without propagating the signal to the ScrollView.
I have 3 separate examples. This is a simple QML application that should be easy to run.
The two first examples work. The third does not work.
What is "working":
Press the mouse button down on the MouseArea
Move the mouse around without releasing the button
The message that logs coordinates should never stop printing, wherever you are on screen until you release the mouse button.
For the third example, I get logs until the mouse moves too much and all the updates stop.
Only ScrollView (works)
import QtQuick 2.12
import QtQuick.Controls 2.12
import QtQuick.Layouts 1.12
ApplicationWindow{
id: root
visible: true
width: 1200
height: 600
ScrollView {
clip: true
anchors.fill: parent
MouseArea {
width: 300
height: 300
onPositionChanged: {
console.log('Moved', mouseX, mouseY)
}
}
}
}
Only ColumnLayout (works)
import QtQuick 2.12
import QtQuick.Controls 2.12
import QtQuick.Layouts 1.12
ApplicationWindow{
id: root
visible: true
width: 1200
height: 600
ColumnLayout {
MouseArea {
width: 300
height: 300
onPositionChanged: {
console.log('Moved', mouseX, mouseY)
}
}
}
}
ColumnLayout inside a ScrollView (does not work)
import QtQuick 2.12
import QtQuick.Controls 2.12
import QtQuick.Layouts 1.12
ApplicationWindow {
id: root
visible: true
width: 1200
height: 600
ScrollView {
clip: true
anchors.fill: parent
// note: It does not work for ColumnLayout, Column, Row or RowLayout. If I use a Item here, it works
ColumnLayout {
MouseArea {
width: 300
height: 300
onPositionChanged: {
console.log('Moved', mouseX, mouseY)
}
}
}
}
}
You can find a video of the behavior here: https://i.imgur.com/rIlWnhu.mp4
I press and release the mouse without moving: I get the pressed & released events correctly
I press and move the mouse: I get the pressed event, the move event, then it stops. No more move or released events.
I press and move the mouse without going too far from the position where I pressed the mouse: It works until I get too far
Note: I don't get any Released or Exited event, but the containsPressed property is correctly updated (ie: when I no longer receive events, its value is false). This is the property that I use to display the "Mouse pressed" text.
Is this something I do wrong with the ScrollView/ColumnLayout combo or is this a Qt bug ?
Add this to your MouseArea in your third example:
preventStealing: true
For more info see:
https://doc.qt.io/qt-5/qml-qtquick-mousearea.html#preventStealing-prop
I am following this tutorial on YouTube and the person sets the TextField to fill the width of the RowLayout. However, it doesn't seem to work for me. I tried using Layout.fillWidth on the CheckBox and it seems to work perfectly fine but it doesn't seem to want to work on the TextField. Here is my code:
main.qml:
import QtQuick 2.9
import QtQuick.Controls 2.2
ApplicationWindow
{
visible: true;
width: 640;
height: 480;
title: qsTr("Tabs");
ToDoList
{
anchors.centerIn: parent;
}
}
ToDoList.qml:
import QtQuick 2.9
import QtQuick.Controls 2.2
import QtQuick.Layouts 1.3
Frame
{
ListView
{
// Using implicit width and height allows the frame to automatically scale to the size of the list view
implicitWidth: 250
implicitHeight: 250
clip: true
model: 100
delegate: RowLayout {
width: parent.width
CheckBox {}
TextField
{
Layout.fillWidth: true
}
}
}
}
Here is a screenshot of what mine looks like
What did I do wrong?
I don't know if this has anything to do with it but I made a "Qt Quick Application - Swipe" instead of "Qt Quick Controls 2 Application" as that option wasn't available to me. Thanks in advance for any help.
Edit: I have written step by step instructions to replicate the issue below.
File > New File or Project
From the new window make sure "Application" is selected then click "Qt Quick Application - Swipe" and press "Choose"
Set any name for the project and click "Next"
Set the build system to "qmake" and click "Next"
Set the minimal required Qt version to "Qt 5.9" and the Qt quick controls style to "Material Dark" and click "Next"
Select the "Desktop Qt 5.12.0 MSVC2017 64bit" as the kit and click "Next"
Set the options to have no version control and click "Finish"
Delete "Page1Form.ui.qml" and "Page2Form.ui.qml" from the "Projects" pane
Replace the contents of "main.qml" with:
import QtQuick 2.9
import QtQuick.Controls 2.2
ApplicationWindow
{
visible: true;
width: 640;
height: 480;
title: qsTr("Tabs");
ToDoList
{
anchors.centerIn: parent;
}
}
Right click on the root project file and click "Add New"
From the new window make sure "Qt" is selected then click "QML File (Qt Quick 2)" and press "Choose"
Name the file "ToDoList" and click "Next"
Add to project "qml.qrc Prefix: /" then set the options to have no version control and click "Finish"
Replace the contents of "ToDoList.qml" with:
import QtQuick 2.9
import QtQuick.Controls 2.2
import QtQuick.Layouts 1.3
Frame
{
ListView
{
// Using implicit width and height allows the frame to automatically scale to the size of the list view
implicitWidth: 250
implicitHeight: 250
clip: true
model: 100
delegate: RowLayout {
width: parent.width
CheckBox {}
TextField
{
Layout.fillWidth: true
}
}
}
}
Run the project
The width is set properly. The problem is with TextField style. You may check it by setting background like
TextField
{
Layout.fillWidth: true
background: Rectangle {
color: "red"
}
}
Or just start typing into those fields with and without Layout.fillWidth: true
My question is related to this one: Full-screen desktop application with QML
Here is my MWE:
import QtQuick 2.11
import QtQuick.Window 2.2
import QtQuick.Controls 2.2
Window
{
property string windowFull: "FullScreen";
property string windowWindowed: "Windowed";
width: 400
height: 400
visible: true
title: "Example"
visibility: windowFull;
id: theWindow;
Button
{
onClicked:
{
if (theWindow.visibility === windowWindowed)
theWindow.visibility = windowFull;
else
theWindow.visibility = windowWindowed;
}
}
}
In this example I am trying to go from windowed mode to full screen and vice versa when clicking the button. My problem is that going full screen from windowed mode works, but from full screen to windowed does not. Are there any special requirements that has to be made in order to go windowed mode from full screen?
On Ubuntu, using Window.AutomaticVisibility is making the window visibilty as windowed (default window). Please check the QML window example.
import QtQuick 2.11
import QtQuick.Window 2.2
import QtQuick.Controls 2.2
Window
{
property string windowFull: "FullScreen";
property string windowWindowed: "Windowed";
width: 400
height: 400
visible: true
title: "Example"
visibility: windowFull;
id: theWindow;
Button
{
onClicked:
{
if (theWindow.visibility === Window.FullScreen)
theWindow.visibility = Window.AutomaticVisibility;
else
theWindow.visibility = Window.FullScreen;
}
}
}