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Qt -- change the Mouse shape, Qt -- the Mouse shape

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)

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 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

"QT" QT Development and debugging environment configuration under Windows

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

Introduction to the Qt::wa_deleteonclose of Qt window properties

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, 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

QT Introductory Learning--QT Quick Start (vim pure code writing)

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

Inside QT series (13): Overview of QT/ebody Structure

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

Introduction to the QT qwidget class -- Introduction to the QT class (III)

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

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

Ubunntu 12.04 installs Qt 4.5.3 (build for QT 4.5.3 development environment) __ubuntu12.04

windows: Refer to the following documentationhttp://download.csdn.net/detail/trustguan/4943897 ex-continued The following is the establishment of QT development platform, my platform is Ubuntu 12.04, the need for the QT version of two (started online, Tmake, but later from 3.0 Qt since bring the Make tool, there is no need to tmake):

QT/mfc migration framework (QT/mfc migration framework) (from: http://hi.baidu.com/tigerwooz/blog/item/cc6105fa65808612a)

The QT/mfc Migration Framework tool assists in the migration of existing Win32 or MFC applications to the QT toolkit. The project provides a set of classes that allow using QT and MFC/Win32 windows in the same application. User interface elements developed with QT can be embedded into an existing MFC or Win32 based use

Embedded Linux QT Development (iv)--QT creator project Management

embedded linux qt Development (iv)--qt Creator project Management First,QT Creator project Management Qt Creator manages the source code in the form of a project, and a QT project contains different types of files as follows:A, . Pro Project description FileB, . Pro.user Use

QT Directory Dependency problem----How to generate a green QT package

QT Directory Dependency problem----How to generate a green QT packageOne, the core issues:What if you copy the compiled QT file to any directory and use it as a green software library?Second, the principle of discussionSince QT hardcoded the installation path into the library file at compile time, this problem does not

QSs to beautify the QT program and the recently made QT Project interface

What is QSSQSS, known as QT style sheets, is the QT stylesheet, which is a mechanism provided by QT to customize the appearance of a control. QSS a lot of reference to the content of CSS, but the function of QSS is much weaker than the CSS, embodied in the selector is less, you can use a lot less qss properties, and not all of the properties can be used in all

[Qt] 2.3 use the Qt designer to create a dialog box, 2.3qt

[Qt] 2.3 use the Qt designer to create a dialog box, 2.3qt After installing Qt OpenSource, you can find these items in the Start Menu. [Designer] is a program used to design the window interface. So now you can use it to design a dialog box. In [Qt Creator], you can also design the interface in [design. Open [Designer

QT Smart Pointer Learning (7 unique pointers for QT)

Starting from a memory leak?Very simple entry procedure, you should be familiar with it ^_^#include In the context of the delete from Qt, we mentioned that the program has a memory leak (the representation is that the destructor is not called), and there are three workarounds: Assigning a Label object to a stack instead of a heap Set tag bit qt::wa_deleteonclose for label Call Delete yourse

Write QT designer custom controls (1) -- how to create and use QT Custom Controls

When using QT designer to design the form interface, we can use the form control in the widget box to easily draw the interface, such as dragging a button and a text editor. Although the controls in QT designer can meet most of our needs, sometimes some special requirements are also generated. For example, in an input box, we need to enter the longitude and latitude, in this case, there are two input method

Where is the QT voice qt transmission door?

QT Portal access: Any QT user can view this feature when you are a group master or group Administrator of one or more groups, you can turn on/off the QT portal for the corresponding group Introduction to the function of the QT Portal: It is a quick access to the QT room. In

QT Learning Path: QT Threading related classes

I hope that the contents of the event loop in the previous chapter have not knocked you around. This chapter will go back to the relevant content on the thread. In the previous chapters we learned about QThread the simple use of classes. However, QT provides a thread-specific class that is not so simple, otherwise we do not need to repeatedly emphasize the use of threads must be extremely careful, a careless will fall into the trap.In fact,

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