qt project

The latest project used QT 5.5, the project in the process of running a period of time the CPU occupancy rate of 25%, and frequent disconnection of the situation, then decided to optimize the performance of the project.The optimization tool is also VS2010 's own performance analysis tool, the specific method of use see: http://www.cnblogs.com/smark/archive/2011/1

Article Source: http://blog.sina.com.cn/s/blog_64d015c10100sf1o.htmlThis article mainly describes how to create a QT project that can be compiled in VC6. The environment used in this paper is vc++6.0+qt3.3.2.First, open the Qtdesigner, select the New File/project tab in the Pop-up window, select the C + + project, clic

Create a new GUI project, QT4 for Qt4 GUI application,qt5 for Qt Widgets application, base class Select QmainwindowProject implementation features: Two buttons, one for selecting a picture in a folder and previewing a picture, a button to invert the picture. The project code is as follows:. Pro code snippet, the code for adding OpenCV header files and library fun

I. Establishment of the QT Project (single case: Gui established during embedded development) 1. open qtcreator and create a new project2. select QT project GUI app3. in qt c ++ project and select the path (it is best not to have

= ../libINCLUDEPATH += ../includeDEPENDPATH += . ../includeSOURCES += base.cppHEADERS += base.h Target indicates that the library name after compilation is base, and config + = static indicates that the compiled library is a static library. Destdir sets the location of the compiled library. After the library compilation is complete, the executable file is compiled. The project file is in APP. Pro under the app directory. The content is as follows:

+ =. forms include qrc sources# Header file inclusion pathIncludepath + =.# Information generated during qmake, $ {A} reads the string of variable A, $ (PATH) reads the path of the Environment Variable# Message ($ (PATH ))# Source file encodingCodecforsrc = GBK# Input# Header files contained in the projectHeaders + = include/painter. h#. Uidesign file contained in the projectForms + = forms/painter. UI# Source files contained in the projectSources + = sources/Main. cpp sources/painter. cpp# Res

On the Internet to read the introduction of the QT series of articles, thanks to Doug Blog Moderator, so good tutorials and share with you, this article is a primer on the notes, in order to make a start, to hear everyone's good opinion. Hope that you better and faster learning QT, to achieve their goals, to achieve their own ideals. This paper analyzes the structure of

Qt for Windows: 1. do not contain Chinese characters or spaces in the installation path of the QT environment. 2. do not contain Chinese characters or spaces in the path of the QT project. Otherwise, the IDE will prompt"Cannot find file: XXX. Pro". (IDE: qcreator 2.0.1) 3. If the prompt is:Cocould not find make comm

target classification and retrieval, can be used in video to search for specific objects , such as finding people, cars, or bicycles, to further search for people in red, hats, cars, heavy trucks, cars with license plate numbers, etc.? Summary: The video summarization function based on key frame is realized. For cell monitoring, specific site monitoring and so on, no one or vehicle through the information is not important, in a quiet community or some monitoring sites without abnormal circumsta

file will appear in the project.Double-click Pixer.rc, right-click Add ResourceSelect icon, and then importSelect the previous icon file, the default is the program icons!Compile again, runThe icon for the executable program has changed.Publishing programsWhen you want to share your program, it is impossible to copy the compiled directory to someone else to run it. The compiled program should be a main program, add some resource files, add some dynamic link library, some of the tall can also do

After using CMake to speak Qt, VTK, and ITK, when you open a solution and add a new class, you run the error "N unresolved external commands".The reason is that the newly created class failed to generate the MoC file, and the workaround is:1. Right-click the. h file that you want to generate the MoC file from, open properties, general, and item types to the custom build tool.2. In the newly generated options, fill in the relevant content:Specific as f

TEMPLATE = appDEFINES += DEVICE_TYPE_LINUX_XIXUNHEADERS += ../../source/log4qt/basicconfigurator.h ../../source/log4qt/writerappender.h SOURCES += ../../source/log4qt/fileappender.cpp ../../source/log4qt/layout.cpp \QT += core network sql xml gui webkitLIBS += -lz -lX11 libSUSI-3.02.so# INCLUDEPATH += /usr/include/gstreamer-0.10 /usr/include/glib-2.0 /usr/lib/i386-linux-gnu/glib-2.0/include /usr/include/libxml2# INCLUDEPATH += /usr/include/g

Making UI FilesYou should first use QT Designer to draw an own interface, co-myform.ui (here MyForm can use their favorite name instead). There are a few key points to note when making your own interface files:1, remember the name of the UI file, because the UIC generated code will exist in ui_myform.h;2, to remember the main form of the object name, because the UI file provides the class name in this form to kill, for example, the main form name Main

Code baked from others is always wrong when it is moved to its own QT, for two reasons: 1. There are Chinese characters in the file placement path, just change it to English. 2. Select the QT version and build directory under the project to overwrite it. 3. Delete the original. Pro. User File and reload it. 4. A headache was solved just now, that is, what obj

The Visual Studio add-in lets you launchQt designerSimply by double-clicking on. UIFile. SeeQt designerManual} for more information. To add a new. UIFile to the project, selectProject | add new itemAnd then selectQt widget formOrQt dialog formTemplate fromQt project itemsFolder. Normally, you will need to wrap the code generated for the form file into a qwidget subclass to add signals or slots to it. A conv

By default, a quick project is created with qtcreator5.2.0, but the following error is reported:Error:cstdlib.h no such file or directoryWorkaround:Open project file Untitled4.pro, plus includepath = d:/soft/cygwin/usr/local/android-ndk-r10/platforms/android-l/arch-arm/usr/ include/If the report cannot find CRTBEGIN_SO.O, you can add qmake_lflags + =-nostdlibIf it's a z m DL or something plus libs + =-ld:/s

qcheckbox::indicator{height:0px;width:0px;}#skill_bar_container qcheckbox:unchecked{Background-image:url (image/system/button/frequent_checkbox/unchecked.png);}#skill_bar_container qcheckbox:unchecked:hover{Background-image:url (image/system/button/frequent_checkbox/unchecked_hover.png);}#skill_bar_container qcheckbox:unchecked:pressed{Background-image:url (image/system/button/frequent_checkbox/unchecked_press.png);}#skill_bar_container qcheckbox:checked{Background-image:url (image/system/butto

This project is and implementation of embedded porting, cross-compiled files and source code has been packaged, download address: http://download.csdn.net/download/wu9797/10213212 The report (thesis) has been uploaded to Baidu Library: https://wenku.baidu.com/view/c2975409bdd126fff705cc1755270722192e5912 Where the announcement window looks like this: The clock window is shown in the following figure: The weather window looks like the f

We continue the journey of QT, this time is still a small thing, it is a stopwatch, this stopwatch is mainly logical operation, in fact, there is not much content, that is, learning about the use of qtime and Qtimer, we look at what the UI looks like Here is very simple, we first analyze the control, the top is a qlcdnumber to display the number of seconds, the middle of four buttons to control, the following is a record point of logic, control using

Compiling environment Ubuntu 12.04 (32 or 64-bit)Install git sudo apt-get install gitInstall the compilation tool sudo apt-get install build-essentialInstall cmake sudo apt-get install cmakeInstall qt4 sudo apt-get install libqt4-devsudo apt-get install qtcreator Note:Currently, qt5 is not supported.Install zlib sudo apt-get install zlib1g-dev All dependent packages here should be installed completely.Download source code git clone http://github.com/WizTeam/WizQTClient.git After obtaining the so