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  • Problems with QDialog in Qt

    - by Martin
    I'm using Qt for Symbian. I have some problems with a QDialog that I open from a QMenu. The QDialog shows up fine and in the QDialog I have a QDialogButtonBox with a button to Close the QDialog. BUT if I close the QDialog and then open it from the QMenu again, it will show up but the button from the QDialogButtonBox will not show up. Instead the buttons from the QMainWindow will show but they are grayed out. How can I get the QDialog buttons to show every time? Maybe I have some problems with setting focus on the QDialog? I really can't see what I'm doing wrong here. It's not much code that I use, you can try it yourself. This is my code: In QMainWindow I use the following to create the menu: QAction *menuButton = new QAction("Menu", this); menuButton->setSoftKeyRole(QAction::PositiveSoftKey); QMenu *menu = new QMenu(this); menuButton->setMenu(menu); QAction *popup = new QAction("Show popup",this); connect(popup, SIGNAL(triggered()), this, SLOT(showPopup())); menu->addAction(popup); addAction(menuButton); This shows the QDialog: void MyMainWindow::showPopup(){ TestDialog *test = new TestDialog(this); test->setAttribute(Qt::WA_DeleteOnClose); test->show(); } This is the TestDialog: TestDialog::TestDialog(QWidget *parent) : QDialog(parent) { ui.setupUi(this); QDesktopWidget* desktopWidget = QApplication::desktop(); QRect rect = desktopWidget->availableGeometry(); this->setFixedWidth(rect.width()); }

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  • Cannot connect QMainWindow and QDialog

    - by bartek
    Hi, I have a QMainWindow displaying a QDialog: CalibrationDialog d(this); d.exec(); My QMainWindow class has a signal: signals: void PenOn( QPoint p ); And QDialog has a slot: public slots: void on_PenON( QPoint p ); I tried connecting PenOn event to on_PenOn in two ways: After instantiating QDialog void MainWindow::on_actionC_triggered() { appState = CALIBR; CalibrationDialog d(this); connect( this, SIGNAL(PenOn(QPoint)), &d,SLOT(on_PenOn(QPoint)) ); d.exec(); } In QDialog constructor CalibrationDialog::CalibrationDialog(QWidget *parent) : QDialog(parent), ui(new Ui::CalibrationDialog) { ui-setupUi(this); [...] connect( parent, SIGNAL(PenOn(QPoint)), this,SLOT(on_PenOn(QPoint)) ); } None of this works :(. I'm emitting PenOn signal from MainWindow slot activated by another thread. What am I doing wrong?

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  • How to stop a QDialog from executing while still in the __init__ statement(or immediatly after)?

    - by Jonathan
    I am wondering how I can go about stopping a dialog from opening if certain conditions are met in its __init__ statement. The following code tries to call the 'self.close()' function and it does, but (I'm assuming) since the dialog has not yet started its event loop, that it doesn't trigger the close event? So is there another way to close and/or stop the dialog from opening without triggering an event? Example code: from PyQt4 import QtCore, QtGui class dlg_closeInit(QtGui.QDialog): ''' Close the dialog if a certain condition is met in the __init__ statement ''' def __init__(self): QtGui.QDialog.__init__(self) self.txt_mytext = QtGui.QLineEdit('some text') self.btn_accept = QtGui.QPushButton('Accept') self.myLayout = QtGui.QVBoxLayout(self) self.myLayout.addWidget(self.txt_mytext) self.myLayout.addWidget(self.btn_accept) self.setLayout(self.myLayout) # Connect the button self.connect(self.btn_accept,QtCore.SIGNAL('clicked()'), self.on_accept) self.close() def on_accept(self): # Get the data... self.mydata = self.txt_mytext.text() self.accept() def get_data(self): return self.mydata def closeEvent(self, event): print 'Closing...' if __name__ == '__main__': import sys app = QtGui.QApplication(sys.argv) dialog = dlg_closeInit() if dialog.exec_(): print dialog.get_data() else: print "Failed"

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  • HowTo stick QDialog to Screen Borders like Skype do?

    - by mosg
    Hello. A long time ago I tried to find method how to stick QDialog window to screen borders for my small projects like Skype windows do it, but I failed. May be I was looking this code not in the right place, so now I'm looking the solution here, on stack! :) So, does any one have a deal with some kind of such code, links, samples? In my opinion, we have to reimplement QDialog moveEvent function, like below, but that code does not working: void CDialog::moveEvent(QMoveEvent * event) { QRect wndRect; int leftTaskbar = 0, rightTaskbar = 0, topTaskbar = 0, bottomTaskbar = 0; // int top = 0, left = 0, right = 0, bottom = 0; wndRect = this->frameGeometry(); // Screen resolution int screenWidth = QApplication::desktop()->width(); int screenHeight = QApplication::desktop()->height(); int wndWidth = wndRect.right() - wndRect.left(); int wndHeight = wndRect.bottom() - wndRect.top(); int posX = event->pos().x(); int posY = event->pos().y(); // Snap to screen border // Left border if (posX >= -m_nXOffset + leftTaskbar && posX <= leftTaskbar + m_nXOffset) { //left = leftTaskbar; this->move(leftTaskbar, posY); return; } // Top border if (posY >= -m_nYOffset && posY <= topTaskbar + m_nYOffset) { //top = topTaskbar; this->move(posX, topTaskbar); return; } // Right border if (posX + wndWidth <= screenWidth - rightTaskbar + m_nXOffset && posX + wndWidth >= screenWidth - rightTaskbar - m_nXOffset) { //right = screenWidth - rightTaskbar - wndWidth; this->move(screenWidth - rightTaskbar - wndWidth, posY); return; } // Bottom border if (posY + wndHeight <= screenHeight - bottomTaskbar + m_nYOffset && posY + wndHeight >= screenHeight - bottomTaskbar - m_nYOffset) { //bottom = screenHeight - bottomTaskbar - wndHeight; this->move(posX, screenHeight - bottomTaskbar - wndHeight); return; } QDialog::moveEvent(event); } Thanks.

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  • Calling activateWindow on QDialog sends window to background

    - by Stan
    I am debugging certain application written with C++/Qt4. On Linux it has problems that with certain window managers (gnome-wm/metacity), the main window (based on QDialog) is created in the background (it's not raised). I managed to re-create the scenario using PyQt4 and following code: from PyQt4.QtCore import * from PyQt4.QtGui import * import sys class PinDialog(QDialog): def showEvent(self, event): QDialog.showEvent(self, event) self.raise_() self.activateWindow() if __name__ == "__main__": app = QApplication(sys.argv) widget = PinDialog() app.setActiveWindow(widget) widget.exec_() sys.exit(0) If I remove self.activateWindow() the application works as expected. This seems wrong, since documentation for activateWindow does not specify any conditions under which something like this could happen. My question is: Is there any reason to have activateWindow in showEvent in the first place? If there is some reason, what would be good workaround for focusing issues?

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  • How can I get rid of the resize-handle in a QDialog?

    - by Georg
    I've got the following class: class SelectDateDialog(QDialog): startDate = date.today() endDate = date.today() def __init__(self, text, isInterval = False): QDialog.__init__(self) uic.loadUi("resources/SelectDate.ui", self) Now, the dialog is resizable on Mac OS X 10.5, but it shouldn't be. It has the resize-handle in the lower right corner. I've already tried the setSizeGripEnabled function, it didn't change anything. How can I make it not resizable?

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  • [Qt] How to make another window pop up that extends QWidget as opposed to QDialog?

    - by Graphics Noob
    So far I've only had my main window pop up other windows that were QDialogs and I'm not getting it to work with a QWidget. The other window I want to display was designed with the Form Editor, then wrapped in a class called ResultViewer which extends QWidget (as opposed to QDialog). What I want is to have the ResultViewer show its ui in a seperate window. Now when I try to display it the ResultViewer ui just pops up in the main window on top of the mainwindow ui. The code I'm using to display it is this (in my mainwindow.cpp file) ResultViewer * rv = new ResultView(this); rv->show(); The constructor for the ResultViewer looks like this ResultViewer::ResultViewer(QWidget * parent) : QWidget(parent), ui(new Ui::ResultViewer) { ui->setupUi(this); } I've looked through the QWidget documentation a bit but the only thing I can find that may be related is the QWidget::window() function, but the explanation isn't very clear, it just gives an example of changing the title of a window.

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  • Static linking in Qt --> link errors in VS 2008

    - by ChruS
    Today I dediced to make static linking in Qt. I used Qt4 with Visual Studio and static C runtime article. The 3rd step took quite a long time. When it was finished I opened my project in VS 2008, made Build->Clean Solution and try to Release. Unfortunately I got link errors: warning LNK4098: defaultlib 'libcmt.lib' conflicts with use of other libs; use /NODEFAULTLIB:library error LNK2019: unresolved external symbol "private: static struct QString::Data QString::shared_null" (?shared_null@QString@@0UData@1@A) referenced in function "public: __thiscall QString::QString(void)" (??0QString@@QAE@XZ) error LNK2019: unresolved external symbol "private: static struct QByteArray::Data QByteArray::shared_null" (?shared_null@QByteArray@@0UData@1@A) referenced in function "public: __thiscall QByteArray::QByteArray(void)" (??0QByteArray@@QAE@XZ) error LNK2001: unresolved external symbol "private: static struct QByteArray::Data QByteArray::shared_null" (?shared_null@QByteArray@@0UData@1@A) error LNK2001: unresolved external symbol "public: static struct QMetaObject const QDialog::staticMetaObject" (?staticMetaObject@QDialog@@2UQMetaObject@@B) error LNK2001: unresolved external symbol "public: static struct QMetaObject const QDialog::staticMetaObject" (?staticMetaObject@QDialog@@2UQMetaObject@@B) error LNK2001: unresolved external symbol "public: static struct QMetaObject const QDialog::staticMetaObject" (?staticMetaObject@QDialog@@2UQMetaObject@@B) error LNK2019: unresolved external symbol "public: static enum QSysInfo::WinVersion const QSysInfo::WindowsVersion" (?WindowsVersion@QSysInfo@@2W4WinVersion@1@B) referenced in function _WinMain@16 What i did wrong? Help to fix this pls.

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  • Static linking in Qt --> link errors in VS 2008

    - by ChruS
    Today I dediced to make static linking in Qt. I used Qt4 with Visual Studio and static C runtime article. The 3rd step took quite a long time. When it was finished I opened my project in VS 2008, made Build->Clean Solution and try to Release. Unfortunately I got link errors: warning LNK4098: defaultlib 'libcmt.lib' conflicts with use of other libs; use /NODEFAULTLIB:library error LNK2019: unresolved external symbol "private: static struct QString::Data QString::shared_null" (?shared_null@QString@@0UData@1@A) referenced in function "public: __thiscall QString::QString(void)" (??0QString@@QAE@XZ) error LNK2019: unresolved external symbol "private: static struct QByteArray::Data QByteArray::shared_null" (?shared_null@QByteArray@@0UData@1@A) referenced in function "public: __thiscall QByteArray::QByteArray(void)" (??0QByteArray@@QAE@XZ) error LNK2001: unresolved external symbol "private: static struct QByteArray::Data QByteArray::shared_null" (?shared_null@QByteArray@@0UData@1@A) error LNK2001: unresolved external symbol "public: static struct QMetaObject const QDialog::staticMetaObject" (?staticMetaObject@QDialog@@2UQMetaObject@@B) error LNK2001: unresolved external symbol "public: static struct QMetaObject const QDialog::staticMetaObject" (?staticMetaObject@QDialog@@2UQMetaObject@@B) error LNK2001: unresolved external symbol "public: static struct QMetaObject const QDialog::staticMetaObject" (?staticMetaObject@QDialog@@2UQMetaObject@@B) error LNK2019: unresolved external symbol "public: static enum QSysInfo::WinVersion const QSysInfo::WindowsVersion" (?WindowsVersion@QSysInfo@@2W4WinVersion@1@B) referenced in function _WinMain@16 What i did wrong? Help to fix this pls.

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  • slot function not getting called

    - by chappar
    I am learning QT and trying out some examples. I am trying to make a dialog that disappears a label when a button is pressed and makes it appear when the same button is pressed again. Below is the code. #include <QApplication> #include <QPushButton> #include <QLabel> #include <QDialog> #include <QObject> #include <QHBoxLayout> int main(int argc, char ** argv) { QApplication app(argc, argv); QDialog *dialog = new QDialog; QPushButton *testButton = new QPushButton(QObject::tr("test")); QLabel * testLabel = new QLabel (QObject::tr("test")); QHBoxLayout * layout = new QHBoxLayout; layout->addWidget(testButton); layout->addWidget(testLabel); QObject::connect(testButton, SIGNAL(toggled(bool)), testLabel, SLOT(setVisible(bool))); dialog->setLayout(layout); dialog->show(); return app.exec(); } It is not working. Whenever i press the test button nothing happens. But if i change the signal slot connections as QObject::connect(testButton, SIGNAL(clicked(bool)), testLabel, SLOT(setVisible(bool))); it makes the label disappear. So, why it is not working with signal "toggled". What i am guessing is, it is not able to find that signal. Can you guys throw some light?

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  • error: expected ',' or '...' before numeric constant

    - by goldfrapp04
    Just a Qt Gui Application with QDialog as the Base Class, the simplest type you can expect. I've programmed on Qt for several times but this is the first time I meet this problem... I've added minimal code to the program, and here's the code in dialog.h (which is mostly automatically generated) #ifndef DIALOG_H #define DIALOG_H #include <QDialog> #include <QPixmap> #include "bmp.h" namespace Ui { class Dialog; } class Dialog : public QDialog { Q_OBJECT public: explicit Dialog(QWidget *parent = 0); ~Dialog(); private slots: void on_openButton_clicked(); private: Ui::Dialog *ui; BMP srcImage; QImage compressedImage[3]; }; #endif // DIALOG_H While I edit, the "public:" is underlined and says "unexpected token '('". When I try to build the program, it says in the line "Q_OBJECT", "error: expected ',' or '...' before numeric constant". I'm sure I've defined nothing related to it (to be exact, I defined an N and an n in file bmp.h, both are int). Any idea of what's wrong here? Thanks.

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  • Qt - A login dialog

    - by Narek
    I want to create a login dialog by inheriting QDialog. I put in subclass named LoginDialog 2 QLineEdits: for login for password. I want to be able to warn the user with a message if the caps lock is ON while he will start to fill passwordLineEdit. Suppose I have a function that tells the current state of CapsLock button. So I want to do eventFiltering in LoginDialog class in order to understand that user starts to fill the password field (i.e. user just stepped into the password field) So for that purpose I wrote the following in the LoginDialog class constructor: m_passwordLineEdit->installEventFilter(this); So the only thing is to do is to implement a function which can understand that user is going to fill the password. Seems is should be done with the following function(??): bool LoginDialog::eventFilter(QObject *target, QEvent *event) { if (target == m_passwordLineEdit) { } return QDialog::eventFilter(target, event); } How to implement this function???

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  • Embedded QGraphicsView do not hide after Dialog closes

    - by torsten
    I call a QDialog in to modes, showNormal and showFullscreen. In normal mode all works fine. With a Keyevent the Dialog closes as expected. In Fullscreen, after a keyevent the Dialog closes, but the QGraphicsView will stay on top. All things i've tried (like closing/updating the view) failed. the View sta on top. view = new QGraphicsView(scene); view->setViewport(new QGLWidget(QGLFormat(QGL::SampleBuffers))); view->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); view->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); view->setViewportUpdateMode(QGraphicsView::FullViewportUpdate); view->setFrameStyle(QFrame::NoFrame); view->setBackgroundBrush(Qt::white); view->setRenderHints(QPainter::Antialiasing); view->setSceneRect(0,0,resolution.x(),resolution.y()); Maybe my structure will help to solve the Problem: This call the QDialog named GraphicsWidgetDialog. void DemoArrowDialog::setDemo() { gwd->graphicsWidget->setListenKeyEvents(true); gwd->setWindowTitle("Demo"); gwd->setFixedSize(500,500); gwd->restoreGeometry(settings); gwd->setContentsMargins(0,0,0,0); gwd->setModal(false); gwd->showNormal(); gwd->graphicsWidget->show(); gwd->setFocus(); } void DemoArrowDialog::setFullScreenDemo() { settings = gwd->saveGeometry(); gwd->graphicsWidget->setListenKeyEvents(true); gwd->setContentsMargins(0,0,0,0); gwd->setModal(true); gwd->graphicsWidget->showFullScreen(); gwd->showFullScreen(); gwd->setFocus(); } This is the Definition of the GraphicsWidgetDialog GraphicsWidgetDialog::GraphicsWidgetDialog(QWidget *parent) : QDialog(parent) { graphicsWidget = new GraphicsWidget; QGridLayout *layout = new QGridLayout; layout->addWidget(graphicsWidget); layout->setContentsMargins(0,0,0,0); graphicsWidget->loadConfig(); graphicsWidget->loadArrowConfig("Arrow"); graphicsWidget->setArrowPosition(arrowPosition(arrowCenter)); graphicsWidget->update(); setLayout(layout); connect(graphicsWidget,SIGNAL(closeEvent()),this,SLOT(reject())); } The GraphicsWidget is the Widget that contains the QGraphcisView and Scene On keyPessEvent it will emit the closeEvent(). Any Idea?

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  • PyQt signal between QObjects

    - by geho
    I'm trying to make a view and controller in PyQt where the view is emitting a custom signal when a button is clicked, and the controller has one of its methods connected to the emitted signal. It does not work, however. The respond method is not called when I click the button. Any idea what I did wrong ? import sys from PyQt4.QtCore import * from PyQt4.QtGui import QPushButton, QVBoxLayout, QDialog, QApplication class TestView(QDialog): def __init__(self, parent=None): super(TestView, self).__init__(parent) self.button = QPushButton('Click') layout = QVBoxLayout() layout.addWidget(self.button) self.setLayout(layout) self.connect(self.button, SIGNAL('clicked()'), self.buttonClicked) def buttonClicked(self): self.emit(SIGNAL('request')) class TestController(QObject): def __init__(self, view): self.view = view self.connect(self.view, SIGNAL('request'), self.respond) def respond(self): print 'respond' app = QApplication(sys.argv) dialog = TestView() controller = TestController(dialog) dialog.show() app.exec_()

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  • QFileDialog used as widget

    - by lvp
    Hi! My goal is: user can choose file (only *mp3) and after clicking twice on it it should play (so the QString to file should be send to play() funtion) Firstly I started to work with QTreeView, but it has signal when the file is selected. So I decided to create QFileDialog and used it as widget built-in into MainWindow. The only problem that I have, that after double-click it dissapers. It is possible to avoid it? Should I work with some QDialog::finished() signal or, QDialog::done()?

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  • pyqt QTreeWidget setItemWidget dissapears after drag/drop

    - by mleep
    I'm trying to keep a widget put into a QTreeWidgetItem after a reparent (drag and drop) using QTreeWidget.setItemWidget() But the result, if you compile the following code - is that the widget inside the QTreeWidgetItem disappears. Any idea why? What code would fix this (repopulate the QTreeWidgetItem with the widget I guess?) from PyQt4.QtCore import * from PyQt4.QtGui import * class InlineEditor (QWidget): _MUTE = 'MUTE' def __init__ (self, parent): QWidget.__init__ (self, parent) self.setAutoFillBackground (True) lo = QHBoxLayout() lo.setSpacing(4) self._cbFoo = QComboBox() for x in ["ABC", "DEF", "GHI", "JKL"]: self._cbFoo.addItem(x) self._leBar = QLineEdit('', self) lo.addWidget (self._cbFoo, 3) lo.addSpacing (5) lo.addWidget (QLabel ( 'Bar:')) lo.addWidget (self._leBar, 3) lo.addStretch (5) self.setLayout (lo) class Form (QDialog): def __init__(self,parent=None): QDialog.__init__(self, parent) grid = QGridLayout () tree = QTreeWidget () # Here is the issue? tree.setDragDropMode(QAbstractItemView.InternalMove) tree.setColumnCount(3) for n in range (2): i = QTreeWidgetItem (tree) # create QTreeWidget the sub i i.setText (0, "first" + str (n)) # set the text of the first 0 i.setText (1, "second") for m in range (2): j = QTreeWidgetItem(i) j.setText (0, "child first" + str (m)) #b1 = QCheckBox("push me 0", tree) # this wont work w/ drag by itself either #tree.setItemWidget (tree.topLevelItem(0).child(1), 1, b1) item = InlineEditor(tree) # deal with a combination of multiple controls tree.setItemWidget(tree.topLevelItem(0).child(1), 1, item) grid.addWidget (tree) self.setLayout (grid) app = QApplication ([]) form = Form () form.show () app.exec_ ()

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  • How to display a Dialog on window created using XCreateWindow in QT 4.5.2

    - by Ummar
    I am doing work on project. In which I have developed a full size screen displaying images using XCreateWindow. Now I want to display a dialog on this screen. I have created a QDialog it does'nt show on the full size screen but it is displayed on screen when it is not full size. Any Help. My code for creating screen and dialogbox is as follows XSetWindowAttributes attribs; XClassHint *classhints; XSizeHints *sizehints; int wndwidth, wndheight; long input_mask, ic_input_mask; XEvent xevent; wndwidth = fullscreen ? WidthOfScreen(screen) : width; wndheight = fullscreen ? HeightOfScreen(screen) : height; attribs.background_pixel = BlackPixelOfScreen(screen); attribs.backing_store = ownbackstore ? NotUseful : Always; attribs.override_redirect = fullscreen; wnd = XCreateWindow(display, RootWindowOfScreen(screen), 0, 0, wndwidth, wndheight, 0, CopyFromParent, InputOutput, CopyFromParent, CWBackPixel | CWBackingStore | CWOverrideRedirect, &attribs); XRaiseWindow(display, wnd); //QDialog I want to show on wnd(XCreateWindow) ToolbarDialog *objToolbarDialog= new ToolbarDialog(); objToolbarDialog->setVisible(true); objToolbarDialog->showNormal();

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  • QObject::connect not connecting signal to slot

    - by user1662800
    I am using C++ and Qt in my project and my problem is QObject::connect function doesn't connect signal to a slot. I have the following classes: class AddCommentDialog : public QDialog { Q_OBJECT public: ...some functions signals: void snippetAdded(); private slots: void on_buttonEkle_clicked(); private: Ui::AddCommentDialog *ui; QString snippet; }; A part of my Main window: class MainWindow : public QMainWindow { Q_OBJECT public: explicit MainWindow(QWidget *parent = 0); ~MainWindow(); private slots: void commentAddedSlot(); void variableAddedSlot(); ... private: AddCommentDialog *addCommentDialog; ... }; Ant the last dialog; class AddDegiskenDialog : public QDialog { Q_OBJECT public: ... signals: void variableAdded(); private slots: void on_buttonEkle_clicked(); private: Ui::AddDegiskenDialog *ui; ... }; In the main window constructor i connect signals and slots: addCommentDialog=new AddCommentDialog(); addDegiskenDialog=new AddDegiskenDialog(); connect(addDegiskenDialog, SIGNAL(variableAdded()), this, SLOT(variableAddedSlot())); connect(addCommentDialog, SIGNAL(snippetAdded()), this, SLOT(commentAddedSlot())); The point is my commentAddedSlot is connected to it's signal successfully, but commentAddedSlot is failed. There is the Q_OBJECT macros, no warning such as about no x slot. In addition to this, receivers(SIGNAL(snippetAdded())) gives me 1 but receivers(SIGNAL(variableAdded())) gives me 0 and i used commands qmake -project; qmake and make to fully compile. What am i missing?

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  • How to display a QGraphicsScene?

    - by Chris
    I've got the following code and I'm not sure how to add the QGraphicsScene to my layout.. class MainForm(QDialog): def __init__(self, parent=None): super(MainForm, self).__init__(parent) self.scene = QGraphicsScene(self) self.scene.setSceneRect(0, 0, 500, 500) self.view = QGraphicsView() self.view.setRenderHint(QPainter.Antialiasing) self.view.setScene(self.scene) self.view.setFocusPolicy(Qt.NoFocus) zoomSlider = QSlider(Qt.Horizontal) zoomSlider.setRange(5, 200) zoomSlider.setValue(100) self.pauseButton = QPushButton("Pause") quitButton = QPushButton("Quit") layout = QVBoxLayout() layout.addWidget(zoomSlider) self.setLayout(layout) self.startTimer(10) How can I get my QGraphicsScene running? I'm new to Qt. Am I even supposed to be adding a QGraphicsScene to a layout/

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  • Displaying a popup widget in QT over application border

    - by Chris Kaminski
    Let's say that I have an application frame, and I want to show a popup QCalendarWidget over on the right side of the frame. Normally, QT will clip the edges of the QCalendarWidget, cutting it in half and not displaying the rest, as it would be over the right side border. Is there a way to work around this limitation without resorting to implementing a QDialog? I want the widget to be visible outside the bounds of it's container.

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  • Qt send signal to main application window

    - by dumbquestion
    I need a QDialog to send a signal to redraw the main window. But connect needs an object to connect to. So I must create each dialog with new and explicitly put a connect() every time. What I really need is a way of just sending MainWindow::Redraw() from inside any function and having a single connect() inside Mainwindow to receive them. But you can't make a signal static and dialogs obviously don't inherit from MainWindow.

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  • Ubuntu 13.10 install ISO crashes on VirtualBox Mac 4.3

    - by John Allsup
    Does anybody know what to do about this? Machine is a 2008 Core 2 Duo iMac with 4GB RAM. (And 64bit Debian 7 boots OK, but I've not tried installing under the latest version of VirtualBox as I have just upgraded VBox today.) VirtualBox 4.3, upon trying to boot a machine with the Ubuntu 13.10 (64bit) iso (with the VM configured for Ubuntu 64bit) crashes, with the following information: Failed to open a session for the virtual machine Ubuntu64. The VM session was aborted. Result Code: NS_ERROR_FAILURE (0x80004005) Component: SessionMachine Interface: ISession {12f4dcdb-12b2-4ec1-b7cd-ddd9f6c5bf4d} === Head of crash dump is below Process: VirtualBoxVM [716] Path: /Applications/VirtualBox.app/Contents/MacOS/VirtualBoxVM Identifier: VirtualBoxVM Version: ??? (???) Code Type: X86 (Native) Parent Process: VBoxSVC [644] Date/Time: 2013-10-17 22:58:23.679 +0100 OS Version: Mac OS X 10.6.8 (10K549) Report Version: 6 Exception Type: EXC_BAD_ACCESS (SIGBUS) Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000000000040 Crashed Thread: 0 Dispatch queue: com.apple.main-thread Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 com.apple.CoreFoundation 0x92a25c03 CFSetApplyFunction + 83 1 com.apple.framework.IOKit 0x95557ad4 __IOHIDManagerInitialEnumCallback + 69 2 com.apple.CoreFoundation 0x92a2442b __CFRunLoopDoSources0 + 1563 3 com.apple.CoreFoundation 0x92a21eef __CFRunLoopRun + 1071 4 com.apple.CoreFoundation 0x92a213c4 CFRunLoopRunSpecific + 452 5 com.apple.CoreFoundation 0x92a211f1 CFRunLoopRunInMode + 97 6 com.apple.HIToolbox 0x98eb5e04 RunCurrentEventLoopInMode + 392 7 com.apple.HIToolbox 0x98eb5af5 ReceiveNextEventCommon + 158 8 com.apple.HIToolbox 0x98eb5a3e BlockUntilNextEventMatchingListInMode + 81 9 com.apple.AppKit 0x9971b595 _DPSNextEvent + 847 10 com.apple.AppKit 0x9971add6 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 156 11 com.apple.AppKit 0x996dd1f3 -[NSApplication run] + 821 12 QtGuiVBox 0x019f19e1 QEventDispatcherMac::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 1505 13 QtCoreVBox 0x018083b1 QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) + 65 14 QtCoreVBox 0x018086fa QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 170 15 QtGuiVBox 0x01eea9e5 QDialog::exec() + 261 16 VirtualBox.dylib 0x011234b8 TrustedMain + 1108104 17 VirtualBox.dylib 0x01126d68 TrustedMain + 1122616 18 VirtualBox.dylib 0x010fac19 TrustedMain + 942057 19 VirtualBox.dylib 0x010f9b3d TrustedMain + 937741 20 VirtualBox.dylib 0x010f81dd TrustedMain + 931245 21 VirtualBox.dylib 0x010f85b8 TrustedMain + 932232 22 VirtualBox.dylib 0x0109d4f8 TrustedMain + 559304 23 VirtualBox.dylib 0x0101521e TrustedMain + 1518 24 ...virtualbox.app.VirtualBoxVM 0x00002e7e start + 2766 25 ...virtualbox.app.VirtualBoxVM 0x000024b5 start + 261 26 ...virtualbox.app.VirtualBoxVM 0x000023e5 start + 53 ==== And please somebody fix the code so that you can just delimit large blocks of code at the start and the end without indenting every line manually by 4 spaces.

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