General and Desktop

@Joel-Bodenmann said in QStandardItem custom drag MIME: However, I'd like to understand why QStandardItem does not offer a setMimeData() function. Because noone wants to create a mime data just on suspicion for every item.

@privatepepper Very happy to hear. Im not 100% if one can make it a Qt module or something more clever but at least this way it works then !

The question is very general. So what exactly is the problem you cannot solve, and what have you coded so far?

@johnratius Hi LOD means Level of Detail and its often used in games where an object that is far away from view, is drawn using a lesser detailed model then when up close. for Graphics View Framework its more like a "factor" that allows you do reduce the drawing calls. Like not paint small text or what else that could make sense for your type of shapes. from the 40000 sample. Here is only draws the rect when far away and not all the small details. const qreal lod = option->levelOfDetailFromTransform(painter->worldTransform()); if (lod < 0.2) { if (lod < 0.125) { painter->fillRect(QRectF(0, 0, 110, 70), fillColor); return; }

I added in code setColumnWidth(): ui->tableView->setModel(model); ui->tableView->setItemDelegate(new TableViewColumnDelegate(this)); ui->tableView->setWordWrap(true); ui->tableView->setTextElideMode(Qt::ElideNone); ui->tableView->setFont(font); **ui->tableView->setColumnWidth(0,64); ui->tableView->setColumnWidth(1,250); ui->tableView->setColumnWidth(2,250);** Word wrap not working. Delegate didn't change. [image: c4d95d95-5616-4ff4-83e8-c877fb50840d.png]

@VRonin I move the content of QThread into mainwindow.cpp, it worked now !

I finally managed to build the driver with IBM DB2 11.5 libs and headers, turns out I just needed to use the MSVC 2017 compiler. Full unicode support now. Had some problems with the compiler in the past, but works just fine now, compile times for my program are vastly better too.

Hey I'm try to solve this problem. When i run the code, "qmake--MYSQL_INCDIR="%Mysql%/MySQL Server 8.0/include"MYSQL_LIBDIR="%Mysql%/MySQL Server 8.0/lib" " it's show me the message " QMake has two modes, one mode for generating project files based on some heuristics, and the other for generating makefiles. Normally you shouldn't need to specify a mode, as makefile generation is the default mode for qmake, but you may use this to test qmake on an existing project " How can i solve this?

AFAIR, they match the mkspecs that you can find in your Qt installation.

@fcarney As I said it works ok in almost every computer, also I double checked the version of the Qt dlls and it was ok.

@Rickz So since from your example your filters are simple sequential and do not need to look at other values, if you wish you can change so you simply read one line at a time and pass it through all the filters. Reading all the lines into memory/an array at the start does not gain you anything. In which case RAM will reduce from (300MB * whatever for each line) to about 100 bytes for one line! Up to you.

I couldn't manage to implement it with runjavascript because pdf.js is way more complex than I can manage at the moment, but your link made me realize that I was ignoring a big part of qwebengine. I think I can use runjavascript to inspect DOM and see if it has already loaded. Thank you!

Hi For global hotkeys, you have to use platform API Like http://amin-ahmadi.com/2015/11/14/how-to-use-system-wide-hotkeys-in-your-qt-application/ for windows. For linux, i would inspect something like http://www.nongnu.org/xbindkeys/xbindkeys.html to see how it does. Regarding the stay on the top and stay in background feature. This will depend heavily on the Windows manger if supported/allowed.

This Issue seems quite old, for anyone who just wanna bring their Qt Creator back to work, here is some tricks I learned from somewhere else, share with you. Qt Creator Version: 4.11.0 Based on Qt 5.14.0 [quick solution]: right click <sources> folder under project tree, add some random file. After that the "Run" button activated again, this is definitely a Qt Creator bug. The reason I come up with this Bug is: I added created new subproject for unit test, and I delete or remove it somehow, and the run button just not working anymore, even after I restart the Qt Creator, until I found the trick above somewhere in youtube. I hope it helps any single one who is struggling.

@Ketan__Patel__0011 Hi Since its not unicode or UTF8 or real text at all you cannot just store it in the DB as it expects it to be valid text with valid encoding. So do as @Bonnie says and store them in a blop via QByteArray. Like this sample storing images. https://wiki.qt.io/How_to_Store_and_Retrieve_Image_on_SQLite Note, the type used for creating the table query.exec( "CREATE TABLE IF NOT EXISTS imgTable ( filename TEXT, imagedata BLOB )" ); Then it won't alter your data and it should work. Your output from the encryption is no longer valid text. Treat it as a binary thing and use QByteArray in case it might add a zero in there. std::string and QString is not ok for this sort of data in many cases.

@mrjj I will definitly give it a try, thank you :)

@Taytoo Hi Did you try a Delegate to paint it the way you like ? https://stackoverflow.com/questions/55969916/how-to-remove-qtreeview-indentation