Qt → QGlobalShortcut - Global hotkeys

linux, Qt, QGlobalShortcut, HotKey, Windows

In the process of studying the issues with global hotkeys for Linux and Windows, I wrote my library for quick registration hotkeys. The resulting library is called QGlobalShortcut and is available at GitHub under license LGPLv2. The library supports the …

Qt → Qt Linux - Lesson 002. Global HotKey in Linux

Qt, Ubuntu, HotKey, linux, XLib, XCB

Work with the global keyboard hot keys in Windows is a trivial task than Linux, since this has WinAPI prepared methods that do not require a large amount of code. And each hotkey is set in line ID, in which …

Xlib → XKeysymToKeycode

linux, unix, X11, XKeysymToKeycode, Xorg

Name and similar functions

XStringToKeysym, XKeysymToString, XKeycodeToKeysym, XKeysymToKeycode, XConvertCase - convert keysyms

Syntax

KeySym XStringToKeysym(char *string);

char *XKeysymToString(KeySym keysym);
KeySym XKeycodeToKeysym(Display *display, KeyCode keycode, int index);
KeyCode XKeysymToKeycode(Display *display, KeySym keysym);
void XConvertCase(KeySym keysym, KeySym *lower_return, KeySym *upper_return);

Arguments

display …

Xlib → XGrabKey

HotKey, linux, X11, XGrabKey

Syntax

XGrabKey(display, keycode, modifiers, grab_window, owner_events, pointer_mode, keyboard_mode)
      Display *    display;
      int          keycode;
      unsigned int modifiers;
      Window       grab_window;
      Bool         owner_events;
      int          pointer_mode, keyboard_mode;

Arguments

display         // Specifies the connection to the X server.
keycode         // Specifies the KeyCode or AnyKey. …

Xlib → XUngrabKey

HotKey, linux, X11, XUngrabKey

Syntax

XUngrabKey(display, keycode, modifiers, grab_window)
      Display *     display;
      int           keycode;
      unsigned int  modifiers;
      Window        grab_window;

Arguments

display       // Specifies the connection to the X server.
keycode       // Specifies the KeyCode or AnyKey.
modifiers     // Specifies the set of keymasks or …

Qt → Qt Linux - Lesson 001. Autorun Qt application under Linux

Linux, Qt, автозапуск, autorun, Ubuntu

Let's talk about how you can add functionality in Qt application to configure startup of the application. For example, we have a settings window, and we want to make the ability to customize the dialog box Autorun application.

In contrast …

QML → QML - Lesson 023. The hunt for bugs in the transmission pointer to QObject in QML

bug, Qt, pointer, JavaScriptOwnership, QML, указатель

One of the most vile and little predictable bugs are those that arise in an uncertain time. Among these include a bug that appears when the pointer is transmitted to the QObject in QML layer. The problem is that if …

Qt → Fifteen on Qt

Qt, Пятнашки, Fifteen

During the maintenance of the blog, and collect information on the subject of Qt is a continuous interaction with the readers, who are trained on the examples on this site. But at the same time any reader can also make …

Qt → Qt/C++ - Lesson 043. Qt Single Application - Start only one instance of application

Qt Single Application, QSharedMemory, QSystemSemaphore, QLockFile, Qt

Permission to run only one instance of the application may be necessary to limit the problems with memory leaks, or to eliminate possible problems with the competition between two instances of an application for some resources, files, SQLite database, etc. …

Qt → Qt and Direct3D 12 - First Encounter

D3D12, Direct3D, Qt, Qt Blog, QtD3D12Window

Translation of official news by Laszlo Agocs

The face of graphics APIs is changing. Qt Quick 2 was released in 2012 with Qt 5.0, and built on OpenGL and OpenGL ES 2.0. Changes and improvements have since been made - …