General and Desktop

Be sure and edit the thread title to add [Solved] if it's resolved. Thanks!

[quote author="peppe" date="1313510909"]I'm not sure what do you mean. Which format the data you're trying to set has? An integer / a double you need to format in a specific way? ( Qt 4.8 will introduce QLocale support for currencies (f.i. QLocale::toCurrencyString). )[/quote] It is a double. But someone suggested to me subclass QValidator to validate what is introduced in the lineedit. I did this and it worked. Thank you!

See http://developer.qt.nokia.com/wiki/Threads_Events_QObjects , especially the last examples. If your job is not splittable and/or you can't insert calls to QCoreApplication::processEvents, use a separate thread.

Please use the edit option next to your post to make spelling corrections or additions instead of making new posts.

Ahh, I can't believe it... The qsqlite4.dll requires msvcr90.dll, which is next to the exe. But when it tries to load the dll I suppose it changes the working-directory to qsqlite4.dll 's folder, which does not contains msvcr90.dll. If I copy msvcr90.dll next to qsqlite4.dll it can find it and the app can load the sqlite plugin. If only the exe directory contains msvcr90.dll then it can not... Is this a common problem? Are there any solution no to have multiple msvcr90.dll s in every plugin folder? This is important, because the app does not require any installation, and I don't want to install MSVC redistributable installer.

You should show us at least the connect statements. How should we know what's going on without that?

yes,you side it. I knew this method before,but saveState() cant get more details. i need more details,such as toolbar name, detail of every action in toolbar and so on. so i must realize by myself. my application is framework-plugin.

You answer is pretty clear, thanks. So, it's based on select(2) sys call. I just want to make sure. The link is very informative.

I'm looking through Qt textbook right now, it seems that - as I've mentioned - it is possible through QSS. Try this: @ // use your QTextEdit, of course: QTextEdit test; test.setStyleSheet("border: rgb(255, 0, 0); "); @ You can use common colour names, too. For more info, look into documentation: "Qt Style Sheet":http://developer.qt.nokia.com/doc/qt-4.7/stylesheet.html#id-7e8519ff-eddd-442c-ad11-e4519ccf273a

I don't see any reason for that to fail. Can you paste a small, complete, compilable example?

I do not find installable for Qgui4 and Qtcore4 in the log. How do I go about them? I have installed Qt Quick 4.7

Please mark the post title as [Solved]. Thanks

Note that nm can demangle the symbols for you (--demangle) and you also use the c++filt utility to demangle a single symbol (e.g. one the linker is complaining about).

No problem, I just read through a huge backlog of postings :-) I'm setting this to solved.

For Qt itself that's configured at compile time with the -rtti switch. For your projects, you can add rtti do CONFIG: @ CONFIG += rtti @

To cite "QSqlQuery::size() ":http://doc.qt.nokia.com/4.7/qsqlquery.html#size: bq. Returns the size of the result (number of rows returned), or -1 if the size cannot be determined or if the database does not support reporting information about query sizes. [Emphasis by me] SQLite does not support reporting the number of rows in the result set.

I'm not sure if an editable combobox is the right approach for this... It usually is for selecting preexisting entities (a read-only combobox) or for giving some reasonable default values to choose of for a free text field. If you type on the text of an existing entry, that entry is not changed, but a new entry for the combobox is created. I'm not sure if it's possible at all to make the combo box work as you want.

HTML (on which the [[Doc:QTextDocument]] based classes rely on) are very hard to make pixel precise - if not impossible. In that case I personally would go with a QPainter and draw the contents directly. That way you have exact control over where your data is printed.

As stated above and in the docs: [quote]QFileSystemModel will not fetch any files or directories until setRootPath is called. This will prevent any unnecessary querying on the file system until that point such as listing the drives on Windows.[/quote] As for starting off at a certain node, would setRootIndex do the trick? You can retreive the index to use as root by using QFileSystemModels methods to get a QModelIndex for a path.