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  • Subclassing QGraphicsItemGroup

    - by onurozcelik
    Hi everyone I have system that has classes derived from QGraphicsWidget. I manage derived class objects in layouts on QGraphicsScene. Now I need a compound item that contain two or more QGraphicsWidget in it and also I need to put that item inside my layout. So I choose QGraphicsItemGroup and write I class like this. class CompositeItem : public QGraphicsItemGroup,public QGraphicsLayoutItem { ... }; I only implemented sizeHint function again. When add CompositeItem instance to layout it does not shown. What may cause this? Where I made wrong?

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  • Quartz Window Services equivalent for Windows and X11?

    - by Jake Petroules
    What is the equivalent of Quartz Window Services for Windows and X11? I want to be able to capture individual windows with their decorations, shadows, etc., completely independent from each other. Basically what the Son of Grab example is able to do. http://developer.apple.com/mac/library/samplecode/SonOfGrab/Introduction/Intro.html Also it seems like it's not possible to capture non-top-level windows with QWS in Mac. For example I want to be able to capture a Java or Flash applet running inside Firefox. What other library would I need to use instead?

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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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  • WordPress Custom Theme Favicon in Dashboard Menu

    - by Scott B
    When you create a custom theme in WordPress, you can add a link to your theme options on the left menu in the WP dashboard. The default icon that's used next to your menu label is called generic.png and resides in the wp-admin/images directory. Anyone know how to tell WP to use my theme's custom favicon.png instead of the default?

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  • Qwt setAxisScale() seems to lock up application when given numbers with greater precision than 2e-07

    - by Dane Larsen
    I'm using Qwt for some scientific graphing, and I'm working with some fairly small numbers, the smallest being around 1.0e-22. I'm trying to call setAxisScale(xaxis, xmin, xmax) //xmin = 0, xmax = 2.0e-10 But when I do, the application locks up. I haven't found anything in the documentation that refers to a minimum value. Xmin and xmax are both doubles, so that shouldn't be a problem. Is this a bug in Qwt, or am I doing something wrong? Thanks in advance

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  • QAbstractTableModel as a model for one QTableView and few QListViews

    - by ??????
    community. Briefly. I wrote usual model over QAbstractTableModel and using it in usual way for QTableView. But I think I need to use some columns of this model for the few QListViews in QWizard to fill main table in the right way (for user). For example: use the column2 as the QListView's model on the page1 of the wizard; column3 for page2 for its QListView etc. Please, help me to understand just two things: Am I on the right way? If yes then how can I make it simply and explicitly?

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  • what is the mistake in my code

    - by Solitaire
    class myslot { public: Q_OBJECT myslot() { } ~myslot() { } typedef enum Emycars{volvo,benz,tata}cars; public slots: void hellowslot(myslot::cars); }; void myslot::hellowslot(myslot::cars cars1) { } class mysignal { public: Q_OBJECT public: mysignal(myslot *ourslot) { bool val = QObject::connect(this,SIGNAL(hellowsignal(myslot::Emycars)),ourslot,SLOT(hellowslot(myslot::Emycars))); } ~mysignal() { } signals: void hellowsignal(myslot::Emycars); }; int main(int argc, char *argv[]) { QApplication a(argc, argv); myslot slot; mysignal sig(&slot); // DeleteNow w; // w.showMaximized(); return a.exec(); } what is the mistake in mycode, the way which i have written connect for the function which recive enum is right or not? please let me know where i am wrong.

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  • Does ADFS2.0 provide custom authentication stores?

    - by chugh97
    I wanted to find out if ADFS2.0 provides a way for users to be authenticated with a Custom Store? Version 1.0 you could only authenticate users in the Windows domain, using Forms/Windows Integrated/Cardspace. I have an ASP.NEt website, which I would like the users to be authenticated against a custom store in SQL and then ADFS2.0 to take care of the claims issued to the user...

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  • Events with QGraphicsItemGroup

    - by onurozcelik
    In my application I want to use QGraphicsItemGroup for grouping items into one item. I played with it a little and not sure using it because when I want to catch events, events are merged together but I want to handle specific event with specific child. How can I achieve this?

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  • FormsAuthentication.SetAuthCookie in OnAuthorization of custom attribute

    - by Prasad
    I am trying to set an auth cookie in OnAuthorization of my custom attribute in asp.net mvc(C#) application. when the session expires(New Session), i am setting an auth cookie again to make it available until the users logout. I have used the following to set the auth cookie, //set forms auth cookie FormsAuthentication.SetAuthCookie(strUserName, true); But when i check HttpContext.User.Identity.IsAuthenticated, it returns false. How to set an auth cookie in OnAuthorization of custom attribute?

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  • how to get NSTextField in custom NSFormatter class

    - by Amit
    i am new to cocoa and objective-c and creating small application having few NStextFields on the window.I have create custom NSformatter to validate the inputs,at some instance i want to get the NStextField within my custom NSformatter to change its backcolor to red to notify user for wrong input value.I didn't getting how to get the currently selected/focused NStextfield for which i want to change backcolor.

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  • subclassing QList and operator+ overloading

    - by Milen
    I would like to be able to add two QList objects. For example: QList<int> b; b.append(10); b.append(20); b.append(30); QList<int> c; c.append(1); c.append(2); c.append(3); QList<int> d; d = b + c; For this reason, I decided to subclass the QList and to overload the operator+. Here is my code: class List : public QList<int> { public: List() : QList<int>() {} // Add QList + QList friend List operator+(const List& a1, const List& a2); }; List operator+(const List& a1, const List& a2) { List myList; myList.append(a1[0] + a2[0]); myList.append(a1[1] + a2[1]); myList.append(a1[2] + a2[2]); return myList; } int main(int argc, char *argv[]) { QCoreApplication a(argc, argv); List b; b.append(10); b.append(20); b.append(30); List c; c.append(1); c.append(2); c.append(3); List d; d = b + c; List::iterator i; for(i = d.begin(); i != d.end(); ++i) qDebug() << *i; return a.exec(); } , the result is correct but I am not sure whether this is a good approach. I would like to ask whether there is better solution?

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  • How to know coordinates in a real image from a scaled image.

    - by ocell
    Hi folks, First of all thanks for your time reading my question :-) I have an original image (w': 2124, h': 3204) and the same image scaled (w: 512, h: 768). The ratio for width is 4.14 (rw) and the ratio for height is 4.17 (rh). I'm trying to know the coordinates (x', y') in the original image when I receive the coordinates in the scaled image (x, y). I'm using the formula: x' = x * rw and y' = y * rh. But when I'm painting a line, or a rectangle always appears a shift that is incremented when x or y is higher. Please anybody knows how to transform coordinates without loosing of accuracy. Thanks in advance! Oscar.

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  • Reporting services and custom library

    - by niao
    Greetings, In my Reporting Services report I've added reference to my custom library. It works fine. I can display the string which is returned from my custom library method as follows: =ClassLibrary1.MyClass.Parse("harry potter") Above code works fine - it should return SQL query based on passed parameters. My question is, how can I use this code in my DataSource. I'm trying to do something like this: SELECT * FROM =ClassLibrary1.MyClass.Parse(@searchedPhrase) But the above code does not work and the error is returned :"Incorrect syntax near ="

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  • add the same qtreewidgetitems into the second column

    - by srinu
    hello i am using the following program to display the qtreewidget. main.cpp include include "qdomsimple.h" include include "qdomsimple.h" int main(int argc, char *argv[]) { QApplication a(argc, argv); QStringList filelist; filelist.push_back("C:\department1.xml"); filelist.push_back("C:\department2.xml"); filelist.push_back("C:\department3.xml"); QDOMSimple w(filelist); w.resize(260,200); w.show(); return a.exec(); } qdomsimple.cpp include "qdomsimple.h" include include QDOMSimple::QDOMSimple(QStringList strlst,QWidget *parent) : QWidget(parent) { k=0; // DOM document QDomDocument doc("title"); QStringList headerlabels; headerlabels.push_back("Chemistry"); headerlabels.push_back("Mechanical"); headerlabels.push_back("IT"); m_tree = new QTreeWidget( this ); m_tree->setColumnCount(3); m_tree->setHeaderLabels(headerlabels); QStringList::iterator it; for(it=strlst.begin();it<strlst.end();it++) { QFile file(*it); if ( file.open( QIODevice::ReadOnly | QIODevice::Text )) { // The tree view to be filled with xml data // (m_tree is a class member variable) // Creating the DOM tree doc.setContent( &file ); file.close(); // Root of the document QDomElement root = doc.documentElement(); // Taking the first child node of the root QDomNode child = root.firstChild(); // Setting the root as the header of the tree //QTreeWidgetItem* header = new QTreeWidgetItem; //header->setText(k,root.nodeName()); //m_tree->setHeaderItem(header); // Parse until the end of document while (!child.isNull()) { //Convert a DOM node to DOM element QDomElement element = child.toElement(); //Parse only if the node is a really an element if (!element.isNull()) { //Parse the element recursively parseElement( element,0); //Go to the next sibling child = child.nextSiblingElement(); } } //m_tree->setGeometry( QApplication::desktop()->availableGeometry() ); //setGeometry( QApplication::desktop()->availableGeometry() ); } k++; } } void QDOMSimple::parseElement( QDomElement& aElement, QTreeWidgetItem *aParentItem ) { // A map of all attributes of an element QDomNamedNodeMap attrMap = aElement.attributes(); // List all attributes QStringList attrList; for ( int i = 0; i < attrMap.count(); i++ ) { // Attribute name //QString attr = attrMap.item( i ).nodeName(); //attr.append( "-" ); /* Attribute value QString attr; attr.append( attrMap.item( i ).nodeValue() );*/ //attrList.append( attr ); attrList.append(attrMap.item( i).nodeValue()); } QTreeWidgetItem* item; // Create a new view item for elements having child nodes if (aParentItem) { item = new QTreeWidgetItem(aParentItem); } // Create a new view item for elements without child nodes else { item = new QTreeWidgetItem( m_tree ); } //Set tag name and the text QString tagNText; tagNText.append( aElement.tagName() ); //tagNText.append( "------" ); //tagNText.append( aElement.text() ); item->setText(0, tagNText ); // Append attributes to the element node of the tree for ( int i = 0; i < attrList.count(); i++ ) { QTreeWidgetItem* attrItem = new QTreeWidgetItem( item ); attrItem->setText(0, attrList[i] ); } // Repeat the process recursively for child elements QDomElement child = aElement.firstChildElement(); while (!child.isNull()) { parseElement( child, item ); child = child.nextSiblingElement(); } } QDOMSimple::~QDOMSimple() { } for this i got the qtreewidget like this +file1 +file2 +file3 but actual wanted output is +file1 +file2 +file3 i don't know how to do it.Thanks in advance

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  • custom alert view

    - by lolol
    Foursquare uses a customised alert (like the attached image). I'm trying to get the same look and feel, rounded corners, fade in and fade out effect, etc. I'm looking around but all the solutions I found seems to over complicate something simple, like: http://joris.kluivers.nl/blog/2009/04/23/subclass-uialertview-to-create-a-custom-alert/ Am I in the right path? Should I use some custom view class that I don't know about? Should I write my own?

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  • How to delete a QProcess instance correctly?

    - by Kopfschmerzen
    Hi everyone! I have a class looking like this: class FakeRunner : public QObject { Q_OBJECT private: QProcess* proc; public: FakeRunner(); int run() { if (proc) return -1; proc = new QProcess(); QStringList args; QString programName = "fake.exe"; connect(comp, SIGNAL(started()), this, SLOT(procStarted())); connect(comp, SIGNAL(error(QProcess::ProcessError)), this, SLOT(procError(QProcess::ProcessError))); connect(comp, SIGNAL(finished(int, QProcess::ExitStatus)), this, SLOT(procFinished(int, QProcess::ExitStatus))); proc->start(programName, args); return 0; }; private slots: void procStarted() {}; void procFinished(int, QProcess::ExitStatus) {}; void procError(QProcess::ProcessError); } Since "fake.exe" does not exist on my system, proc emits the error() signal. If I handle it like following, my program crashes: void FakeRunner::procError(QProcess::ProcessError rc) { delete proc; proc = 0; } It works well, though, if I don't delete the pointer. So, the question is how (and when) should I delete the pointer to QProcess? I believe I have to delete it to avoid a memory leak. FakeRunner::run() can be invoked many times, so the leak, if there is one, will grow. Thanks!

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  • Custom Grails plugin dependency

    - by ankimal
    I have a custom grails plugin I m trying to develop and set this def dependsOn = [tomcat: "1.0"] in the Plugin script. Now, my custom plugin loads just fine but I dont see tomcat installed in my application. How does one install a dependency plugin (prompt the user to say yes/no)? Is this even possible?

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