Qt → Qt/C++ - Lesson 003. QSettings - How to save application settings?

QSettings, QSettings example, QSettings пример, qt, Настройки, сохранение настроек

Saving application settings - this is one of the first things that beginners learn when working with the Qt framework. For this purpose QSettings class that allows you to save the settings or operating system registry or a text file. …

Qt → Qt/C++ - Lesson 002. QSystemTrayIcon - How to minimize the application to the system tray?

QSystemTrayIcon, Tray, qt, трей

Similar article on PyQt5/Python

Today will discuss the way to turn off the application, the Qt framework, written in, the operating system tray using QSystemTrayIcon class. This function is very useful for applications that need to run in the background …

Data Transmission Technologies → DELL Networking. VLAN Configuring

DELL, vlan, voice vlan

Configuring VLAN for DELL switches (depending on the version of the OS switch syntax may vary slightly.

Before you configure the VLAN on the switch interfaces, you must make the switch in the VLAN database and create a VLAN interface: …

Data Transmission Technologies → DELL Networking. MLAG Protocol

LACP, DELL, MLAG

Campus Switching Architecture

Dell switches networking N-series are based on a modern architecture of campus networks

1. Support loop redundancy without the use of STP by using MLAG protocol to create increased access to resources and high bandwidth.
2. Smooth interoperability with …

Qt → Qt/C++ - Lesson 001. QLineEdit IP Address

ip адрес, lineedit, ip address, qtcreator, QLineEdit IP Address, qt, QLineEdit example, qlineedit

Available similar articles in Qt/QML and PyQt5/Python

When you will develop network applications, you may need to create form for input ip-address, but the use of a simple method setInputMask("000.000.000.000;_"); of QLineEdit does not provide the proper result as this …

Data Transmission Technologies → DELL Networking. CLI (Command Line Interface)

EXEC Mode, CLI, DELL

For example, DELL PowerConnect 3524

You can control the device directly via the terminal port or via a Telnet connection. If access is via a Telnet connection, ensure that the device specific IP-address, which will be used by the workstation …

Data Transmission Technologies → SDH - Synchronous Digital Hierarchy (Part 2)

GFP, PDH, LCAS, VCAT, Sonet, SDH-NG, SDH

Compensation of frequency synchronization error

The pointer can not only fulfill a fixed phase shift and mismatch clock multiplexer clocked device, from which the user data is received. To compensate for this effect, the index value is periodically incremented or …

Data Transmission Technologies → SDH - Synchronous Digital Hierarchy (Part 1)

PDH, STM1, Терминальный мультиплексор, Sonet, Мультиплексор ввода-вывода, SDH

Specific technologies PDH deficiencies have been addressed and overcome technology developers synchronous optical networks (Synchronous Optical NET, SONET), the first version of the standard which appeared in 1984. It was then standardized Committee of T-1 ANSI Institute. As a result …

Data Transmission Technologies → PDH - plesiochronous digital hierarchy

мультиплексор, T1, E1, PDH, бит-стаффинг

PDH technology was developed in the late 60s by AT & T to address the problem of large communication switches, telephone networks among themselves. Communication links the FDM, applied previously to solve this problem, have exhausted their opportunities in terms …

Data Transmission Technologies → DWDM Technology

dwdm, усилители, CWDM, WDM, волс, HDWDM, мультиплексирование

The technology packed wavelength division multiplexing (Dense Wave Division Multiplexing, DWDM) is designed to create a new generation of optical backbones running at multi-terabit speeds and. Information in fiber-optic communication lines passed at the same time a large number of …