C++ – Arne Schmitt

QtVirtualKeyboard on Raspberry Pi

Be sure to install
libxcb-xfixes0-dev

or QtVirtualKeyboard won’t build

QSqlDatabase with ODBC crashed on close

QODBC crashes when closing a database with an QSqlQuery attached.

Make sure all QSqlQuery’s are out of scope before closing or destroying the database.

Using Compiler Explorer with Qt – Qt Blog

One of my preferred developer tools is a web called Compiler Explorer. The tool itself is excellent and useful when trying to optimize your code. The author of the tool describes it in the Github repository as: Compiler Explorer is an interactive compiler. The left-hand pane shows editable C/C++/Rust/Go/D/Haskell code. The right, the assembly output of …

Quelle: Using Compiler Explorer with Qt – Qt Blog

Undefined behavior in C and C++ programs

When a C or C++ program triggers undefined behavior, anything is allowed to happen in the program execution. And by anything, I really mean anything: The program can crash with an error message, it can silently corrupt data, it can morph into a colorful video game, or it can even give the right result.

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