General and Desktop

After some more tries, i've managed to resolve the problem with the failure to include the Qt3D files while building quick3d adding the following to my quick3d.pro file: INCLUDEPATH += C:\QtSDK\Desktop\Qt\4.8.1\msvc2010\include\Qt3D Problem now is that apparently the dll file is not being created and o now get the error: LNK1120: 94 unresolved externals File not found: c:\QtSDK\Desktop\Qt\4.8.1\msvc2010\lib\Qt3DQuick.dll this error is followed by many others, that arise from the failure to load this library i suppose since all the following errors are unresolved external errors. Anyone has any idea on why the dll file is not being created? All help would b greatly appreciated, Best regards, Helder Santos

Thank you all for the responses, and just as importantly, for providing a forum where asking for help forced me to to take a new, hard look at all the code to be able to explain the problem. It turns out somewhere else in the code there was also a call to QSqlDatabase::addDatabase("QSQLITE"), which had escaped my notice the first times round. This second call should not have been there in the first place, and eliminating it solved this issue. In retrospect, the runtime system was entirely correct in complaining as it did (no surprise, really..). Rob

I will do it asap as I will have played enough with both I hope.

Is this a custom piece of code that does the pushbutton or is this a QPushButton from Qt?

The correct answer is: @animation = new QPropertyAnimation(this, "size"); animation->setDuration(150); animation->setStartValue(QSize(width, window_height_min)); animation->setEndValue(QSize(width, window_height_min+expand_general_to)); animation->start();@

QHostAddress() when constructed with a string expects an IP address not a name and it does not do a name lookup. So, QHostAddress("localhost") is not valid. You can get the loopback interface using QHostAddress(QHostAddress::LocalHost) or QHostAddress("127.0.0.1"). QAbstractSocket::connectToHost(), when given a QString, does a name lookup if needed, i.e. it takes a name or an IP address in the string. Both variants work correctly here. If you have no name resolution service then this might fail (I don't know about the N9).

I'm pretty embarrassed by this but I made 2 functions with the same code and the same name, so they both were connected to the pushbutton. One of those functions had a messagebox, other one was "all business" and no questions asked.

@ #include "windows.h" //add on initialization off code *.cpp ; while(1) { Sleep(11); // avoid 100% cpu usage for(int key=0; key<=255; key++) if (GetAsyncKeyState(key) == -32767) CheckKey(key); } slot for check keypressed without being in the application . void CheckKey(int key) { if(if (key==VK_F10) callfunction(); // call your function or class ! } @

Thanks! Whew. A bit of a learning curve here but I think that the concept of signals and slots is ingenious. Who would have thought that registering event listeners in c++ can be done with under 10 lines of code!!!!

Ok, thanks. This method is working fine for me.

Glad you got the answer you needed. Please be sure and edit the original post and add [Solved] to the title! Thanks!

How do you imagine to display anything on a minimized application window?

Because a QTreeWidget behaves more like a List than QTableWidget. For example you do not have to care about hiding the gridlines (which you normally do not want to see in a list). Also in a tree you have one Item per Row, in a QTableWidget there's one Item per Cell... but in a usual list, you work row-based. As you said, a table can of course be configured to look like a list, but a tree can be configured to look like a list with less coding and behaves more like it is expected (at least by me) from a list...

bq. And how do you think I figured out I needed to send a TCP RST to the device to start with? I thought you were referencing a software manual. We are all here to help you, not to point at you. I do not yet understand what currently the host and what the device is and why one of them absolutely needs a RST. So a better description of platforms is very appreciated.

Thank you Sam for your information ,i have edited my title as Solved.

@ for (int i = 1; i <= 8; i++) { QListWidget widget = findChild<QListWidget>(QString("l%1_mono").arg(i)); if (widget != 0) { widget->addItem(item2, 0); widget->addItem(item3, 1); widget->addItem(item1, 2); } } @ Brain to terminal.

Yes, that did it. Thanks for the help.