General and Desktop

thank you for your reply

After working on this for few hrs i figured out that QWidget does not provide any information about the border-width. So instead of using QWidget i use QFrame. My requirement was to paint in the available area excluding the border for a widget. This is achieved by using QFrame that provide "frameWidth()":http://doc.qt.nokia.com/4.7-snapshot/qframe.html#frameWidth-prop and "contentsRect()":http:// for the same purpose. Thanks.

Seems to me that this is what [[doc:QNetworkSession]] and [[doc:QNetworkConfiguration]] are meant for?

Hi, ~daveq! Welcome to Qt Developer Network! Now QDoubleSpinBox does not send any signals when you press Return - so you can't change it's focus state. But if you want to achieve it you can create you own widget (inherited from QDoubleSpinBox) and implement this behaviour there. Maybe there is better solution, but I've done it in this way.

[quote author="tucnak" date="1342510765"]Learn about QSS (Qt Style Sheets) - it allows to add CSS styling to your Qt application. [/quote] Thats pretty cool. I will, still familiarizing myself with Qt. Liking it so far.

setFixedWidth will set both min and maximum width, so doing setMaximumWidth before is redundant.

[quote author="abbas farahmand" date="1342495126"] use can use sqlite db with hash password.[/quote] With salted hashed password. http://en.wikipedia.org/wiki/Cryptographic_salt Further, don't use a fast hash function like MD5 or SHA. Use a scheme that you can make slower as computing power grows, without breaking your code. See for example http://en.wikipedia.org/wiki/Bcrypt If the authentication happens over the network, use a nonce (and SSL). http://en.wikipedia.org/wiki/Cryptographic_nonce If you think this is too much work, don't write the program. Don't implement your security/authentication layer as dilettantish as sony, last.fm, eHarmony, linkedin etc. did – You've read in the news what happens.

Do not mention it

Hello folks, i don't if the problem is sovled right now but i have the same Problem using QVTKWidget with QT! I'm using QTCreator Version 4.8.0 an VTK version 5.8. So i created a small an simple Application under WIN7 x64 and put in the *.pro file the INCLUDEPATH of VTK (INCLUDEPATH += "C:\VTK5.8.0\include\vtk-5.8") and all LIBS of the vtk which are in the folder "C:\VTK5.8.0\lib". I build it successfully! After that i added a Widget in my application and promoted that to QVTKWidget. But now when i would like to build the hole program i get a error that i don't know what to do with that. This is it: _mainwindow.obj:-1: error: LNK2019: unresolved external symbol "public: __thiscall QVTKWidget::QVTKWidget(class QWidget *,class QFlags<enum Qt::WindowType>)" (??0QVTKWidget@@QAE@PAVQWidget@@V?$QFlags@W4WindowType@Qt@@@@@Z) referenced in function "public: void _thiscall Ui_MainWindow::setupUi(class QMainWindow *)" (?setupUi@Ui_MainWindow@@QAEXPAVQMainWindow@@@Z) Can anyone please help me with that error? Any suggestions will be great! Thx! Mario

Thanks mlong, I will do that and study the necessary. Thanks.

ok thx for help

A git repository is always local. You need to add remotes to pull/push to them. Alternatively you can do "File->New Project->Import->from git" (from memory, actual items might vary) to import a new project from git, which will basically show a wizard and then run git clone.

bq. There is a high resolution timer with millisecond interval. Keep in mind that even though you can request a timeout level down to millisecond resolution with QTimer, there is no guarantee that the timer will be called with that resolution. The actual temporal resolution of the QTimer is limited by the underlying operating system and there are no guarantees of real-time operation.

Thank you all very much for the good information, this is really helping me a lot.

[quote author="confused" date="1342446698"]So I would replace _db_path with "C:\Users..." pointing to the folder the .dbf is in? [/quote] Yes [quote author="confused" date="1342446698"] Also can you tell me how to create the .dbf? [/quote] You should execute a query "CREATE TABLE YOURFILE.DBF"

Hi Gerolf, Thank for your reply. Yes, MyClass != MyObject (I'm sorry, it was a typographic mistake). I have found the error (but I can't understand), your definition don't work for me: When we see this definition anything is wrong, it's a simple operator overload, but don't work when use & in QDebug parameter (dbg reference), I have to eliminate this from you code and it work. @Debug &operator <<(QDebug dbg, const MyObject &myObj)@ But I can't understand why can't pass QDebug like reference. Thank you Gerolf. BR,

yes,thanks all and thanks to Andre for complete detail. ;)

Can you send the code ?

On a side note: to support the template-based signal-slot syntax in Qt5, AFAIK signals will be public there by default.