When setting an hyperlink to a QTextBrowser, I would like that link not to be underlined. In previous versions of Qt (e.g. 2,3,4), there used to be a setLinkUnderline(bool) method which probably did the job. How to do this with Qt5 ?
thanks
A possible solution is to eliminate the underline using css:
#include <QApplication>
#include <QTextBrowser>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QTextBrowser w;
w.document()->setDefaultStyleSheet("a{ text-decoration: none; }");
w.append("Stack Overflow");
w.show();
return a.exec();
}
Related
I am trying to hide the MainWindow of my Qt desktop app during startup, and to show a splashscreen. Both only happens after the loading phase, even though I call both splash.show() and window.hide() before the loading phase. I tried to split loading phase and constructor, but result is the same. How can I achieve both before the loading phase ?
Update 1
To display the splash screen, I had to add a call to QApplication::processEvents()
Update 2
The black window was actually not the MainWindow, but a ghost window that popped because scrollArea->setVisible(true) was called in the constructor.
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QPixmap pixmap(QStringLiteral(":/ressources/icons/icon.png"));
QSplashScreen splash(pixmap);
splash.show();
MainWindow window; // this loads for 5-6 seconds
a.processEvents();
window.showLoginPrompt();
splash.finish(&window);
return a.exec();
}
Based on your code and some example I could make it run like you are trying to do.
You only need to call your promptLogin function instead.
#include <QApplication>
#include <QTimer>
#include <QSplashScreen>
#include "mainwindow.h"
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QSplashScreen *splash = new QSplashScreen;
splash->setPixmap(QPixmap("D:\\Projects\\SplashScreen\\TestSplashScreen\\splash.png"));
splash->show();
MainWindow mainWin;
QTimer::singleShot(2500, splash, SLOT(close()));
QTimer::singleShot(2500, &mainWin, SLOT(show()));
return app.exec();
}
I am trying to make the QtVirtualKeyboard example work with QQuickWidget instead of QQuickView. For QuickView, I use the following main.cpp code, which works fine for me:
#include <QQuickView>
#include <QGuiApplication>
#include <QQmlEngine>
int main(int argc, char *argv[])
{
qputenv("QT_IM_MODULE", QByteArray("qtvirtualkeyboard"));
QGuiApplication app(argc, argv);
QQuickView view(QString("qrc:/%2").arg(MAIN_QML));
view.setResizeMode(QQuickView::SizeRootObjectToView);
view.show();
return app.exec();
}
I run into problems, when changing to QQuickWidgets with the following implementation of main.cpp:
#include <QQuickWidget>
#include <QApplication>
#include <QQmlEngine>
int main(int argc, char *argv[])
{
qputenv("QT_IM_MODULE", QByteArray("qtvirtualkeyboard"));
QApplication app(argc, argv);
QQuickWidget w(QString("qrc:/%2").arg(MAIN_QML));
w.setResizeMode(QQuickWidget::SizeRootObjectToView);
w.show();
return app.exec();
}
When I hit the input fields, the virtual keyboard shows up, but when I start typing at the keyboard, I get the message "input method is not set", which seems to be related to the input method plugin. No chars appear in the input fields.
Any ideas? The QML-code didn't change between the above variants of main.cpp
BTW: I am using Linux, gcc, Qt 5.9.0, EGLFS plugin
Thanks for any suggestions!
Regards,
Patrick
Found the solution for QML looking through inputMethod documentation. Following workaround works for me:
TextArea {
...
onActiveFocusChanged: {
if(activeFocus) {
Qt.inputMethod.update(Qt.ImQueryInput)
}
}
}
Works with other controls as well.
Of course InputPanel should be defined in ApplicationWindow like this:
ApplicationWindow {
...
InputPanel {
id: inputPanel
...
}
}
I want to know how to set window title in Qt in maximized mode.
window->setWindowtitle("window");
But this does not work in maximized mode.
playback_main *pbw = new playback_main;
pbw->setWindowTitle("PlayBack");
pbw->showMaximized();
This is not working.
Your code works for me on a QMainWindow in, admittedly, qt 4.7. Do you need to force an update with either of:
pbw->update();
qApp->processEvents();
is pbw a QMainWindow or just a widget?
I've tried the following code on linux which works too:
#include <QApplication>
#include <QMainWindow>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QMainWindow w;
w.setWindowTitle("testing");
w.showMaximized();
return a.exec();
}
I want to create custom Layout alike here: http://doc.qt.io/qt-5/qtwidgets-layouts-flowlayout-flowlayout-cpp.html
I want some methood to put checkbox on top of custom button. For now there are
setGeometry(QRect(QPoint(...
methods for either button and checkbox but whether I'm doing it for button or checkobox first still checkbox appears "under" the button and I can't see/click it.
How can I put checkbox on top of button there?
Simply make the checkbox a child of the button and call setGeometry relative to the button. Children are always drawn on top of their parents.
QPushButton button("Hello World!", &w);
button.setGeometry(0,0,100,100);
button.show();
QCheckBox checkBox(&button);
checkBox.setGeometry(button.rect());
checkBox.show();
No need to put the checkbox into a layout.
I have just made this snippet to check the checkbox on the top of the button and it works for me.
#include "mainwindow.h"
#include <QApplication>
#include <QPushButton>
#include <QCheckBox>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QWidget w;
QPushButton button("Hello World!", &w);
button.setGeometry(0,0,100,100);
button.show();
QCheckBox checkBox(&w);
checkBox.setGeometry(30,30,50,50);
checkBox.show();
w.show();
return a.exec();
}
and here is if you will change the order of "parenting" and want checkbox still be on the top:
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QWidget w;
QCheckBox checkBox(&w);
checkBox.setGeometry(30,30,50,50);
checkBox.show();
QPushButton button("Hello World!", &w);
button.setGeometry(0,0,100,100);
button.show();
checkBox.setParent(NULL);
checkBox.setParent(&w);
w.show();
return a.exec();
}
I want to alternate the colors of a QComboBox. In Windows I have no problem using the view().setAlternatingRowColors(true) function. In Linux and Mac it looks like impossible. I tried also using style sheet (see following code) but I had the same kind of results (all rows with the same background color). Can you explain me what is my error?
#include <QtGui/QApplication>
#include <QComboBox>
#include <QAbstractItemView>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
a.setStyleSheet("QComboBox QAbstractItemView{qproperty-alternatingRowColors: true;alternate-background-color: blue;background: red;}");
QComboBox b;
b.addItem("MM_NONE");
b.addItem("MM_VERT");
b.addItem("MM_FACE");
b.addItem("MM_EDGE");
bool tt = false;
tt = b.view()->alternatingRowColors();
b.show();
return a.exec();
}
At least on my box it appears that QPalette::Base and QPalette::AlternateBase are the same color :) Changing QPalette::AlternateBase to some other color makes this code work fine:
#include <QtGui/QApplication>
#include <QComboBox>
#include <QAbstractItemView>
#include <QPalette>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
QComboBox b;
b.view()->setAlternatingRowColors(true);
QPalette p = b.palette();
p.setColor(QPalette::AlternateBase, Qt::red);
b.setPalette(p);
b.addItem("MM_NONE");
b.addItem("MM_VERT");
b.addItem("MM_FACE");
b.addItem("MM_EDGE");
b.show();
return a.exec();
}