qt dvr

Qt -- change the Mouse shape, Qt -- the Mouse shape To change the shape of the mouse, it is useful when drawing the coordinate system. Please note: 1 this-> setMouseTracking (true); // set to trigger moveEvent 2 void mouseMoveEvent (QMouseEvent * event) 3 {4 QPoint mousepos = event () without pressing the mouse key () -> pos (); 5 6 // in coordinates (0 ~ Width, 0 ~ Height) changes the Mouse shape within th

qt Quick Dive (or QT engineering documentation) Learn and use QT for a while, and do some simple reviews. QT is an open-source GUI software framework for Nokia, which is itself based on C + +. The efficiency is very high, not only for mobile application development, but also to open desktop applications. Integration of

Chapter 1 build the Qt development environment, Chapter 1 build the qt Development Chapter 1 build a Qt Development Environment 1.Ftp://ftp.qt-project.org/Download the source code package of Qt. I downloadedQt-everywhere-opensource-src-4.8.1.tar.gz. Qt Creator downloadsQt-cr

The previous article has confessed to compiling the QT custom version from the source code. Now you can start configuring the development and debugging program and write a Hello world.1. IDEAlthough QT has an official VS plugin that allows us to develop QT applications in VisualStudio, I feel that the experience is not very good, and I prefer to use the refreshin

First, briefToday, we introduce a simple window property--qt::wa_deleteonclose.After the normal window is created, we usually call the close () method to close the window, and here we look at the introduction to the Close () method in the Q helper. BOOL Qwidget::close ()Closes this widget. Returns true if the widget was closed; otherwise returns false. First it sends the widget a qcloseevent. The widget is hidden if it accepts the close e

Chapter 7 exploring the core mechanism of Qt-signal and slot, exploring qt Chapter 7 exploring the core mechanism of Qt-signal and slot Note: To use Qt's core mechanism signal and slot, you must declare the Q_OBJECT macro in the private data zone of the class, and then the moc compiler will be responsible for reading the macro for code conversion, so that the uni

Before writing the code, you need to set up the environment, for details, see: "Qt 5.4.2 Ubuntu Environment Building".a simple blank windowOpen terminal, new file through Vim first_qt.cpp, because QT code is C + + code, so the new file suffix is. cpp.The code reads as follows:#include after writing the code, we need to compile this code into an executable program through the g++ compiler (c + + compiler), b

1. Download and install QT Go to the QT website (http://trolltech.com/developer/downloads/qt overview, download qt-win-opensource-4.3.2-mingw.exe directly, install it. This version has integrated the compilation environment mingw (Note: Only the compiling environment does not include IDE, and eclipse is the real IDE).

In the subsequent content, I will not explain this term in QT for Embedded Linux for short. Note that, in any part of this series of articles, This term refers to QT for Embedded Linux, not QT for Windows CE or QT for Symbian. The applicable software versions are QT for Embe

Document directory I. Detailed Description Ii. Top-level attributes and child components Iv. Window flag ID 5. introduce several important member functions I. Detailed Description The qwidget class is the base class of all user interface objects. In general, basically all UI classes of QT are inherited by qwidget, while qwidget inherits from qobject,You can refer to QT source to find some subtle writi

Configuration and development environment of Qt memoirs and Development of qt memoirs It has been more than a year of development with Qt. The most common GUI development in Windows is MFC, WinForm, WPF, and Qt. MFC and Qt are based on C ++, while WinForm and WPF are general

Qcustomplot-Ultra-compact QT drawing Controls 2016-10-22 16:03:25| Category: QT|Official website: http://www.qcustomplot.com/1.0:http://download.csdn.net/detail/czyt1988/5986701Download Lofter my photo book |Qcustomplot Super Ultra-small QT Drawing Control, very beautiful, very easy to use, only need to add a qcustomplot.h and qcustomplot.cpp can be used, far mor