General and Desktop

Thank you all for your answers. jcga

@Taz742 That's offtopic but you need to link c++ redistributable statically also to have dependancy free application when compiling with MSVC. https://stackoverflow.com/questions/37398/how-do-i-make-a-fully-statically-linked-exe-with-visual-studio-express-2005

Partially related. If you use QDataStream for all your read operations and Qt 5.7+ you can use transactions to avoid you doing the manual check of bytesAvailable()

@ranshalit being() -> before you start painting end() -> when you're done painting

thanks for the direction to mailing list, didn't know about it, will ask there.

@Gianluca86 You can make main window bigger and move the splitter. then it should be bigger.

Because you are using a Qt version built for UWP. If you want to target standard Windows, you have to use the classic Qt for MSVC. Again, that's nothing Qt specific, the two platforms are different so they have different requirements and you can't just switch compilers.

@Asperamanca, no it's not.

Like I wrote before, it depends on the backend. What you can do ? Check which backend you are using. Once identified, whether the feature you need can be implemented there and if so, implement the missing parts and contribute them back to Qt.

Hi and welcome to devnet, How is it related to Qt ?

Hi, It's not the problem of PyQt5. The Qt version you are using only provides the SQLite plugin it seems. You should check with homebrew whether they provide other Qt SQL plugins.

IIRC there was a thread about that in the interest mailing list.

I think I will try with another version of Qt.now I was using Qt5.6.2. I will try with Qt5.9.0

@VRonin said in Designer or pure C++ code: so most have pitched in. Thanks,

@jamie the most reusable way would probably be to create a custom imageformat plugin by implementing QImageIOPlugin interface (in a custom Qt plugin). Take this a reference for example. In the plugin you still need to create a QImage at some point (in QImageIOHandler::read(), to be specific). But i wouldn't use QImage::setPixel() for that but write the (qRgb-)data directly into memory by using QImage::bits() then.

Ah ok. Much thanks. Slowly i understand how its all working.

Hi, In my case, I'm simply drawing a QPainterPath, which is easy to clip with a specified QRect (border). But I have a problem with this approach: I'm using QPainterPath::intersected(const QPainterPath &p) const method which returns clipped path, which is a single connected unit. I want to have multiple disconnected units: [image: 766174c8-139a-49e6-8cf2-374297b58a01.png] How can I get such multiple disconnected units? Thanks in advance.