qt3 to qt4

/local/lib Go to Load_image.pro and add the following: Includepath + =/USR/LOCAL/INCLUDE/OPENCV \/usr/local/include/opencv2 LIBS + =/usr/local/lib/libopencv_core.so.2.4LIBS + =/usr/local/lib/libopencv_highgui.so.2.4 Look at the effect, The configuration is good, (libs in the picture, I just based on the program I will use Cv.h and highgui.h to add, the reader to add their own library, the method is the same) Enter the following in the main.cpp. #include"cv.h"#include"highgui.h"intMainintargcCh

::sortdialog{ q_objectpublic: 0); void Setcolumnrange (Qchar First, Qchar last);}; #endif // Sortdialog_hSortdialog.cpp#include #include"sortdialog.h"Sortdialog::sortdialog (Qwidget*parent): Qdialog (parent) {SETUPUI ( This); Secondarygroupbox-Hide (); Tertiarygroupbox-Hide (); Layout ()-Setsizeconstraint (qlayout::setfixedsize); Setcolumnrange ('A','Z');}voidSortdialog::setcolumnrange (Qchar First, Qchar last) {Primarycolumncombo-Clear (); Secondarycolumncombo-Clear (); Tertiarycolumn

Recently began to contact learning Python, so want to use QT to get a form program out to play, the environment is Python3.4.2, pyqt4.11.3-py3.4, Win7. With the designer of the PYQT to design a form UI file, need to convert to py file for use in Python program, find a lot of methods on the Internet can not, give me a long day. Now put out testing methods available, I hope you do not like me as a detour, wasting time.First go to the Windows Command Prompt window and then go to PYQT's UIC folder,

QT4: Developing QT applications with eclipse Let's look at the overall image first.Eclipse This IDE I think it's a very recent hit, especially in Java development, and NetBeans. Not only can it be used as a Java integrated development environment, it is also capable of of integrated development. Funny company is to provide a special integration tool, so that it can carry out the development of QT. Let me introduce you to the use of this tool.Compared

qhboxlayout; Layout-> addwidget (m_button ); Layout-> addwidget (m_label ); Setlayout (layout ); Setwindowtitle (TR ("myevent ")); } Void myevent: button1clicked () { M_label-> settext (TR ("good morning! ")); } Int main (INT argc, char * argv []) { Qapplication app (argc, argv ); Myevent dialog; Return dialog.exe C (); } # Include The key is to pay attention to the 11th rows. Here, the Click Event of the button is associated with the button1clicked () member function of

// ================================================ ======================================== // Title: // The simplest configuration of qt4 for Dev-CPP // Author: // Norains // Date: // Monday 5-November-2007 // Environment: // Windows XP // ================================================ ======================================== There are a lot of articles on how to configure the QT environment in Dev-CPP, but almost all of them need to set environme

Method 1:1. Backup vimdir/syntax/C. Vim 2. Download C. Vim And replace the existing vimdir/syntax/C. Vim Method 2:1. Backup vimdir/syntax/C. Vim2. Open the vimdir/syntax/C. Vim file and search for the following locations:Code:"A bunch of useful C keywordsSYN keyword cstatement goto break return continue ASM..... 3. Use the following line to replace the above sentence "syn keywordcstatementgoto break return continue ASM".Code:SYN keyword cstatement goto break return continue ASM connect sig

From Qt4 to Qt5, there are three main evolutions:The evolution of 1 languages, originally based on C + + (Qtwidget) and XML (. UI), now adds QML (QtQuick) +js (V8) architecture.2 The evolution of the mapping system, the original Qpainter-based mapping system is unable to fully play the power of OpenGL, so added the Scenegraph drawing framework, for Qtquick use.3 Discard the previous QWS framework based on the display service, replacing it with QPA bas

The Book of qt4 Translation Qt programming Art --------------------------------------------------------------------------------- Original Name: The Book of QT 4: The art of building QT applications The Book of QT 4 Chinese version: QT programming Art Zhang Xiaoke mcxiaoke@gmail.com --------------------------------------------------------------------------------- Chapter 2 tools and methods for creating a dialog box Now you have a rough und

For such a long period of time in embedded development, on the one hand, it was because of the previous company's reasons, on the other hand, it was because of its own reasons, as well as the reasons for its own products. It has always been less demanding on GUI interfaces, therefore, qtopia and qt2.x embedded QT versions have always been around. The classes and methods used are outdated and cannot be well supported by multiple threads. I have bought the "qt