qt dvr

QT under the static compile Qt, according to my experience, if according to the kind of windows under the Official SDK installed directly after the file to compile is not feasible, need to download QT source package directly, At present, the source of Nokia is called QT-EVERYWHERE-OPENSOURCE-SRC tar package, to the onl

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 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 Development (19)--qt memory leak problem I. parent-child relationship between QT objectsQT The most basic and core classes are:Qobject,qobject has a list inside it, it saves children, and a pointer holds the parent, and when it's self-destructor, Will remove itself from the parent list and deconstruct all children.There can be parent-child relationships betw

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

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 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 for iOS, mixed programming of Qt and Objective C, iosobjective Recently, some friends who use Qt asked about Qt for iOS, because I have little experience in this field and cannot write system articles. I am very sorry, I cannot give a satisfactory answer. I suggest you go to Jason's Home. There is also a link in th

In the previous article "Qt on Android: Qt Quick event processing: Mouse, keyboard, and timer", we introduced common processing of mouse, keyboard, and timer, mouse and keyboard are the most commonly used events on computers. In this section, we will introduce a very important gesture on Android smartphones: holding hands. As early as Apple's mobile phone, Apple tried to apply for a patent for the Operation

On the QT website http://download.qt.io/archive/Under the qt4.8.6:http://download.qt.io/archive/qt/4.8/4.8.6/qt-everywhere-opensource-src-4.8.6.tar.gzand Qt creator 2.5.2:http://download.qt.io/archive/qtcreator/2.5/qt-creator-linux-x86-opensource-2.5.2.bin In the te

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

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

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

Recently, there are several friends using QT to ask Qt for iOS things, because I have very little experience in this area, writing system articles, very sorry, can not give a satisfactory answer, recommend everyone to see Jason's Home, in my blog left sidebar link also has, he provided Qt Some of the most interesting articles for IOS, and are practice-based, and

The Book of QT 4 Translation: 3.1.1 use the QT designer to generate a layout The Book of qt4 Translation Qt programming Art --------------------------------------------------------------------------------- Original Name: The Book of QT 4: The art of building QT applica

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,

QT Development (15)--qt coordinate system Introduction ofQT coordinate system Every window in QT has a coordinate system, the upper left corner of the default window is the origin of the coordinates, then the horizontal to the right, then the horizontal to the left, and then the vertical downward, and then vertically up and down in turn. The origin point is the (

"QT is not correctly installed, Run make install" Solution for "invalid QT version" Well, if you encounter this situation, I believe your QT version is copied. This is also the case. I tried to copy the QT version to another path, but I found that qtcreator could not recognize it. However, the following methods can hel

QT is a cross-platform, C + + graphical user interface application framework. It gives application developers the functionality they need to build an art-level graphical user interface. QT is completely object-oriented, easy to scale, and allows for true component programming.QT Creator cross-platform Qt IDE, Qt Creato