In a Qt 5.7 application, QActions on a QToolbar only call their _triggered() slot/callback when the mouse is pressed and released while over that toolbar icon.
How do I configure QAction so that the _triggered() event occurs as soon as the mousedown event occurs over the icon, without waiting for mouse-up?
Related
I have a qwidget derived control.
I need to capture mouse wheel events outside the control / window if the mouse is button is pressed inside the control then the mouse is moved outside.
Mouse move events are captured wheel events are not.
Qt calls capturemouse when button is pressed.
I don't mind doing specific conditional statements for this if necessary.
I am testing on Ubuntu 16.04 and intend to cross compile for windows and possibly Mac,
Set widget focus policy to Qt::WheelFocus.
setFocusPolicy(Qt::WheelFocus);
I write code in QT to detect mouse clicks in server and simulate them in client side. I can detect click on buttons as left click and in client, it clicks on position of button but client doesn't realize it as a push button click and related slot doesn't run.
In client it is realized as a left click and mouseReleaseEvent function being ran. how code can detect it as a pushbutton click?
Try to use Qt UI testing:
http://doc.qt.io/qt-5/qtest.html It helpful for generate keyboard and mouse events.
QWidget widget;
QTest::mouseClick(&widget, Qt::LeftButton, Qt::NoModifier, QPoint(clicked,point));
I added the new UI buttons of unity 5.0 in place of the old GUI texture buttons
in these buttons how to i check when the button has been pressed and released
and how to make the Onclick event keep repeating itself
Add an Event Trigger component to your button . From there you can add a listener for OnPointerUp for when mouse is released and OnPointerDown for when mouse is pressed
How to disable the mouse press event while user can drag any item for QwebView without mousepressevent() function. because i am not promote a QWebView class .
I have a simple parent widget that reimplements mousePressEvent/mouseReleaseEvent. The parent's child widgets use enterEvent/leaveEvent. When I hover the mouse over the child widgets, leaveEvent/enterEvent executes, but when I click and hold the mouse, mousePressEvent executes, but enterEvent/leaveEvent goes silent (in other words, no click and drag). Any ideas about what could be causing this?
If you press and hold down the mouse button on a widget then that widget grabs mouse events until you release the button. This is not a special feature of Qt, you can find similar behaviour in every other GUI APIs I know.
Take a look at the relevant part of the Qt documentation:
QWidget / Events:
mousePressEvent() is called when a mouse button is pressed while the
mouse cursor is inside the widget, or when the widget has grabbed the
mouse using grabMouse(). Pressing the mouse without releasing it is
effectively the same as calling grabMouse().
void QWidget::grabMouse ():
Grabs the mouse input. This widget receives all mouse events until
releaseMouse() is called; other widgets get no mouse events at all.