qt3

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I started to learn C ++ and didn't know much about many things. On Ubuntu, I learned QT easily, just as I knew MFC easily on Windows. QT is really powerful. I decided to record my learning process for future reference. First, write down my getting started knowledge (content from Ubuntu official wiki.ubuntu.org.cn), "Helloubuntu! ". The first is a simple QT3 program: first create a directory qt3hello, and then create a file I started to learn C ++ and

In the process of learning QT, because I look at the information is QT3, and I installed QT is 4.6.0 version, so there will be some differences in the details. In this blog, I will keep statistics to update these subtle differences. Oh, but feel QT4 help document did really great ~ The current findings are as follows: 1, Setcaption function in 4, but can be replaced with setwindowstitle function, the same parameters. 2, Qglwidget Qdialog, such as t

Make xconfig error: * Unable to find the qt3 installation. Please make sure that* The qt3 development package is correctly installed and* Either install PKG-config or set the qtdir Environment* Variable to the correct location.*Make [1]: *** you can create the target "scripts/kconfig/. tmp_qtcheck" required by "scripts/kconfig/qconf. O" without rules ". Stop.Make: *** [xconfig] Error 2 First, make sure

Question: qt3 compilation error-Linux general technology-Linux programming and kernel information. The following is a detailed description. Helloworld. cpp: 1: 25: Error: qapplication. h: No such file or directory Helloworld. cpp: 2: 20: Error: qwidget. h: No such file or directory Helloworld. cpp: 3: 24: Error: qpushbutton. h: No such file or directory Helloworld. cpp: In function 'int main (int, char **)': Helloworld. cpp: 6: Error: 'qapplicatio

; show (); Return app.exe c (); } $ Qmake-project $ Qmake hello. pro $ Make Then an error occurs: Hello. cpp: 1: 24: error: QApplication: No such file or directoryHello. cpp: 2: 18: error: QLabel: No such file or directoryHello. cpp: In function 'int main (int, char **)':Hello. cpp: 6: error: 'qapplication' was not declared in this scopeHello. cpp: 6: error: expected '; 'before' app'Hello. cpp: 7: error: 'qlabel' was not declared in this scopeHello. cpp: 7: error: 'label' was not declared in thi

ReferenceZcg1041Http://blog.csdn.net/zcg1041/article/details/7287883, where the problem is slightly modified. Run the following command on the terminal: Tar zxvf qvfb-1.1.tar.gz CD qvfb-1.1 ./Configure Error:Checking for Qt... configure: Error: QT (> = QT 3.0.3) (headers and libraries) Not found. Please check yourInstallation! For more details about this problem, look at the end of config. log. Cause:First, there is no uniform standard for the production of the Linux release version, which indic

config. log. [Root @ localhost kchmviewer-3.1] # cat config. log | grep qt Configure: 30631:/usr/lib/qt3/include/qstyle. h Configure: 30631:/usr/lib/qt3/qstyle. h Configure: 30631:/usr/lib/qt/include/qstyle. h Configure: 30631:/usr/lib/qt/qstyle. h Configure: 30631:/usr/share/qt3/include/qstyle. h Configure: 30631:/usr/share/

Tarzxvf qvfb-1.1.tar.gz CD qvfb-1.1 ./ConfigureError:Checking for Qt... configure: Error: QT (> = QT 3.0.3) (headers and libraries) Not found. Please check your Installation!For more details about this problem, look at the end of config. log. Cause:First, there is no uniform standard for the production of the Linux release version, which indicates that the Linux system paths may be different.Second, due to the new version of Linux, earlier versions of the library are no longer useful for

Download and install QT/e-related software 1. Install QT/e.Installed on the local machine, including qt4.0.1 (Windows version) and QT/E2. 3. 7 (Linux version ).QT/e I installed in my virtual machine. Due to QT/e2.3.7 versions, it is suitable for redhat9. Version 0 (or earlier). Otherwise, the installation fails.The Installation Process of QT/E is complex. For details, refer to the following section.Article. QT/Embedded Development Environment establishment processThis article can be found onlin

64bits right, that should be/lib64/ld-linux.so.2 and other file names, didn't think so much, run yum-y install glibc first. i686. This time we should be able to see the true face of bc. Run bcompare again excited. More errors come out this time Qt3 is missing in the prompt, so I asked google to confirm that the answer is to install qt3. I think yum-y install

contentCxxflags =-pipe-o2-wall-w-d_reentrant $ (defines)Incpath =-i/usr/share/qt4/mkspecs/linux-g++-I.-i/usr/include/qt4/qtcore-i/usr/include/qt4/qtgui-i/usr/includ E/qt4-i. I.-I.LINK = g++Line 16th inside, the corresponding to find/usr/include/qt4/qtgui/qapplication whether the file exists (generally does not exist, there will be no error). There are approximately two reasons why there is no qapplication file1 does not install the QT4 development package.The solution to the development package

QT is a product of trolltech. Trolltech is a Norwegian software company that mainly develops two types of products: a cross-platform application interface framework and an application platform for Embedded Linux development, can be applied to PDA and various mobile devices. QT and qtopia are two representative examples. QT is a multi-platform C ++ graphic user interface application framework. It provides users with all the elements required for exquisite graphic user interfaces, in addition, it

define a qtextedit object to display the execution information, A custom mythread class object is defined to execute external programs. In this thread's run function, I call the fork and execv functions to execute external programs, redirects the standard output of the executable program to the pipeline, reads the information from the pipeline, and then transmits the information back to the main thread using the qapplication: postevent () function, the main thread append the information to the

QT4 is an open-source, very powerful cross-platform development framework. For example, if you want to develop a program with an interface rather than just a terminal, VB is the fastest in Windows, in Linux, non-QT4 does not belong to anyone. It has powerful functions and is very fast to learn. While QT4 comes with Fedora9, which saves us the trouble of re-installing. It should be noted that, because Fedora9 also retains QT3, it may be necessary to su

push (Tmp.front ()); the Tmp.pop (); - } in } the the #endif Main.cpp1#include"queue.hpp"2#include 3#include 4 using namespacestd;5 6 intMainintargcConst Char*argv[])7 {8queueint>qt;9Qt.push ( +);TenQt.push ( at); OneQt.push (9); AQt.push ( About); -Qt.push ( to); - thecout Endl; - -queueDouble>Qt2 (QT); -cout "Qt2"Endl; + while(!qt2.empty ()) - { +cout Endl; A Qt2.pop (); at } - -queueDouble, listDouble> >Qt3; -

Use Qt and KDevelopDesigner to develop the Linux graphical interface-general Linux technology-Linux programming and kernel information. The following is a detailed description. Use Qt to generate a graphical interface. One method is to use KDevelop Designer to design the interface, compile and run the interface using command lines, and the other method is to design the interface using Qt3 Designer and KDevelop: c/C ++ or KDevelop: KDE/C ++ for compili

-O2-Wall-W-D_REENTRANT $ (DEFINES) 16 INCPATH =-I/usr/share/qt4/mkspecs/linux-g ++-I. -I/usr/include/qt4/QtCore-I/usr/include/qt4/QtGui-I/usr/include/qt4-I. -I. -I. 17 LINK = g ++ Check whether the file/usr/include/qt4/QtGui/QApplication exists in the row 16th. (if the file does not exist, no error will occur ). There are roughly two reasons why the QApplication file does not exist. 1) no Qt4 development kit is installed. Solution to wrap the development, for example, ubuntu is to exec

In gnome, adjust the appearance of the qt Program-general Linux technology-Linux programming and kernel information. The following is a detailed description. By default, QT3 or QT4 programs use the MOTIF style in GNOME, Which is ugly. A qt4-config or qt3-config package can be installed at this time. Then run Qtconfig-qt4 Qtconfig-qt3 This allows you to

Ubuntu operating system now integrates the integrated development environment of QT, but the version is qt3. Although I have installed qt4, the Environment Variable No update is automatically performed. When the qtmake command is used, the qt3 compilation library is called by default, and qapplication qlabel cannot be found in qt3. Class, so an error is reported