General and Desktop

following Error Coming in my system..! QPixmap::operator=: Cannot assign to pixmap during painting. When i was trying to do this code with menubar actions. Please help me out.

It's been some time since I have used a static Qt version (and only on Windows), but the problems seems to be that plugins/imageformats/*.lib are not included in your linker command (they should have been added by qmake with the QTPLUGIN command). Can you try manually add -L/usr/local/Trolltech/Qt-4.8.0/plugins/imagesformats and -lqjpeg4 etc. (or similar) to your LIBS specification?

[quote author="leon.anavi" date="1331279805"]This seems strange. Make sure that your relative path is correct and that your user has proper permissions to open the file.[/quote] I have checked the path is correct but still the problem persists.

@template <class T> inline T qgraphicsitem_cast(QGraphicsItem *item) { return int(static_cast<T>(0)->Type) == int(QGraphicsItem::Type) || (item && int(static_cast<T>(0)->Type) == item->type()) ? static_cast<T>(item) : 0; } @ As you see item->type() is used in qgraphicsitem_cast function

I think that you can try to detect movement and then to move the window back to its original position by overriding "QWidget::moveEvent":http://qt-project.org/doc/qt-4.8/qwidget.html#moveEvent.

Could anynone give me a help?

What kind of troubles are you having? Also, the latest version is 4.8. You might try using the newest version to see if your troubles are resolved.

Is there any alternative way of doing this, i.e. custom progress bar which won't interfere with QNetworkManager. QNetworkManager runs in a separate thread of its own, such things shouldn't occur.

What about extending QTableView and then implement span(..)? I haven't extended any QtView class so far..

Which desktop platform and compiler do you use?

You may want to look at activate() or raise() for the top level window. Focus is a concept within one window. Probably your child process does not loose focus, but discontinues to be the active window.

const methods can be called in a const context. They do not protect you from changes done from another thread while they are executed. So this approach will not work.

You can make use of [[Doc:QInputDialog]] without the static convenience methods too. Just connect to the special signals. I would say "textValueSelected() ":/doc/qt-4.8/qinputdialog.html#textValueSelected is what you need here: bq. This signal is emitted whenever the user selects a text string by accepting the dialog; for example, by clicking the OK button. The selected string is specified by text. You will have to call the respective setters for that parameters of your input box, that go into the call of the static convenience methods.

[quote author="Gerolf" date="1331201250"]you don't know, which clot will be called first, the quit from the thread or the deleteLater.[/quote] As far as I remember this has changed with 4.7. The execution of multiple slots is now guaranteed to be in the order of the connect statements. [quote]"Signals and Slots":http://qt-project.org/doc/qt-4.8/signalsandslots.html If several slots are connected to one signal, the slots will be executed one after the other, in the order they have been connected, when the signal is emitted.[/quote]

[quote author="alireza.shirazi" date="1331049139"]ok you right. i wrote code but give me under error: can't connect to Mysql server on 'Server ip address' (113) thanks a lot[/quote] Did you replace "Server ip address" with the actual address (hostname or IP address)?