Categories

• Qt Development
  

  Everything development. From desktop and mobile to cloud. Games, tools, 3rd party libraries. Everything.

  General and Desktop Mobile and Embedded QML and Qt Quick Tools Installation and Deployment Game Development Qt WebKit QtWebEngine Language Bindings 3rd Party Software Qt for Python

  92936
  Topics
  483034
  Posts

  

  So your model can grab more data on demand. If you use a QSqlTableModel, it won't load 100% of the table content in one go for exemple.

• Education and Certification
  

  Qt in Education, Qt Certification

  Qt in Education Qt Certification

  348
  Topics
  1802
  Posts

  

  @beginMyCoding Did you tried the at() ? you can get the particular element at a specific position from QStringList using at()

  for example , in your code

  images.at(index) will give the element

• General talk
  

  Jobs, project showcases, announcements - anything that isn't directly development

  Announcements The Lounge Jobs Showcase Brainstorm

  2744
  Topics
  15037
  Posts

  

  I had to dig through this thing once, only the real code was like a hundred times longer and more convoluted.

  // Library.h statically linked to and included in DLL and EXE struct SomeType { int typeId(); }; Q_DECLARE_METATYPE(SomeType); // Library.cpp int SomeType::typeId() { return qMetaTypeId<SomeType>(); } // main app SomeType& var1 = getItFromDLL(); SomeType& var2 = getItFromEXE(); bool same = var1.typeId() == var2.typeId(); // nope

  Pretty ugly thing to debug, especially since once in blue moon it actually works :/

• Special Interest Groups
  

  Forums connected to various groups live here

  QtonPi Qt Contribution Qt Medical Qt on BlackBerry and QNX C++ Gurus Independent Developers

  1316
  Topics
  8318
  Posts

  

  @fcarney
  Yes, and also as per reading the link you referenced, your understanding is correct. Static/global storage declarations will be initialized to 0, but local/stack will be uninitialized. This would be just as true if your variable was int instead of struct ....

  I'm not sure why you cannot think how to test this. I have gone to http://cpp.sh and pasted:

  // Example program #include <iostream> #include <string> struct SomeStruct { int somevalue; } buncha_structs[256]; int main() { SomeStruct local_structs[256]; std::cout << local_structs[1].somevalue << std::endl; std::cout << buncha_structs[1].somevalue << std::endl; }

  available as http://cpp.sh/5gbae (don't know how long that link is valid).

  Note that I think you did not intend the typedef in your code. With the typedef, your buncha_structs is a type not a variable. I have removed the typedef to give you a global variable, which I think is what you intended.

  The above reliably outputs 0 for the second, global variable case, but outputs a "random", changing number each time for the first, local case. You should also see that it shows an "uninitialized" warning message against your use in the local variable case.

• International
  

  Language specific discussions from Albanian to Turkiye

  Albanian Bulgarian Chinese Finnish French German Greek Hungarian India Italian Japanese Korean Persian Polish Portuguese Romanian Russian Spanish Turkish

  3763
  Topics
  16212
  Posts

  

  for döngüsüyle bileşeni oluşturduğunuz yerde olay işleyiciyide yazarsanız sonradan erişme sorununuz olmaz. Her bileşen kendi hizmetini gördürür.

  connect(lineEdit, &QLineEdit::editingFinished, this, [=]() { // işlem kodu ya da işlem fonksiyonu buraya. }); ////// connect(comboBox, &QComboBox::currentTextChanged, this, [=]() { // işlem kodu ya da fonksiyonu buraya });

  Kolay gelsin.
  Aykut

• Behind the Scenes
  

  This is where all the posts related to the Qt web services go. Including severe sillyness.

  Qt.io webservices Wiki Discussion

  1326
  Topics
  9308
  Posts

  

  @Crawl.W-0 said in I had changed my email,but I found my forum account is a new, how can I find back my forum account.:

  @JKSH Is he back?

  I'll check.