qt sdk for windows

Source: http://www.cnblogs.com/hicjiajia/archive/2010/08/27/1810239.html Declaration: I have already written a simple DLL file (mydll. dll) and a C version interface. In addition, I used the methods in the previous two DLL articles to export the imported Library (. Lib) file from the DLL. The dll has two functions, and the prototype is as follows:Void helloworld (); // The function calls the Win32 API internally. The helloworld prompt box is displayed. Int add (int A, int B ); // Add two numbe

In windows, use QT-general Linux technology-Linux programming and kernel information. For more information, see. What I use on my computer is msys + mingw + qt4. Install mingw first, select the final item "candidate" during installation, install msys, and find mingw on your own. However, I encountered some problems during installation and do not know how to solve them now, at first, the system prompts th

Cybercom is a music client developed by China Mobile. Http://v.youku.com/v_show/id_XMjI3OTEyNjky.html This video is from last week.V.QtLarge developersYes. Is an application developed by a third-party company. According to the speaker, the design and implementation of the interface It took four weeks for six engineers to design the UI of the boss of the company to perform all the operations with a thumbs up. Qt in use-develop cross-platform

Qt upgrade to version 5.x, Qabstracteventdispatcher function changes, resulting in the LIBQXT library qxtglobalshortcut hang out. Reference Qxtglobalshortcut wrote a global hotkey class, Usage is consistent with qxtglobalshortcut. Normal use in Win8.1 + Qt 5.11_________________________________________ ______________________________Usage_________________________________________ ______________________________

1Download and installation of QThttp://www.qt.io/download-open-source/#section-2650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M02/82/62/wKioL1dTwZHj_fzWAACJ2xUmO6Q556.png "title=" Untitled. png "alt=" Wkiol1dtwzhj_fzwaacj2xumo6q556.png "/>, because this version does not need to manually configure the Qt class library, compiler, convenient and practicalPlaces to watch for installation650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M00/8

Summary:--------------------------------------------------QT Fixed window size:One way is to set its maximum size and minimum size, and make their values equal, equal to the size of the window you are currently setting.A simple example:Setminimumsize (370, 150);Setmaximumsize (370, 150);Other such as height and width can generally be ignored.One way is to use setfixedsize () so that a sentence can solve the problem.A simple example:Setfixedsize (365,2

System: Windows 7Qt Version: 4.8.5Qt Creator version: 2.8.0 installation path: Qt---D:\Qt4.8.5Qt Creator, D:\Qtcreator-2.8.0mingw, d:\m Ingw1. Configuring environment variables: to the system variables, advanced environment variable, properties, My Computer, edit path, add: My Computer's installation road ;D: \qt4.8.5\bin;d:\ Qtcreator-2.8.0\bin;d:\mingw\bin OK; to reopen a new CMD window if you have alread

Linux: Eclipse Configuration Create a new + + + Project Add a CPP file main.cpp Write #include "stdio.h" #include 1 Include directories to add QT Compile hint Error Error "must build your code with position independent code if QT is built with-reduce-relocations." Solution Tick Position indenpendent Code Compilation error did not add library Main.cpp:6: Undefined reference to ' qapplication::q

??Qt synchronized recording playback under Windowsthis blog link: http://blog.csdn.net/jdh99 , Author: jdh, reprint please specify.Environment:Host: WIN8Development environment: QT5 3.1.2DescriptionDo a QQ-like voice transmission software, so test how to use QT for voice synchronization playback under WindowsSource:Mainwindow.h#ifndef mainwindow_h#define mainwindow_h#include Mainwindow.cpp#include "mainwind

Gsoap for Qt (windows), gsoapqt This article has been summarized by myself, and also referred to another online buddy document. Environment: win32, vs2008, Qt 4.7, gsoap2.7.17 1. Install the vs2008 + Qt 4.7 + plug-in. You can simply use QtCreator. 2. Go to the official website to download gsoap2.7.17. If you cannot fin

Ava: Use big-endian byte-order storage Data "low address data high, high address storage data low, the high data stored in the front of the array" Windows (Intel Platform): small-endian storage of data "low address storage data, high address storage data highs, the high level of data stored in the back of the array" (Windows receive Java sent over the short, int needs to invoke Ntohs and Ntohl to convert t

When the Pyqt5+python3+pycharm development environment is configured, it encounters this application failed to start because it could not find or load the Qt platform plugin "Windows". The issue. Applications that cause Pyqt5 not to run through PycharmThe problem occurs because the environment variable is not added.Workaround:Increase in the environment variable:Qt_qpa_platform_plugin_pathC:\Python34\Lib\si

Source code analysis in qtimer (using Windows as an example)In the article, we see the usage of timer in Windows using QT: When the interval is zero, QT does not use the system timer. Non-zero Interval The multimedia timer is used when the interval is less than 20 ms and the system supports multimedia timers.

The sliding window is implemented this time. When I first thought about using a timer, I slide a little out at intervals, but I found some problems that could not be solved inexplicably. It seems to be related to the mechanism of the timer itself, so I had to give up. choose to use the sleep function that comes with windows, and repaint it at intervals. Then, set a status value, click the mouse each time, and change its status. Based on this, determ

Pthread is a fantastic cross-platform line libraries, no need to introduce more.Download Pthread-win32, unzip the x86 in the PthreadVC2.dll into the system32 directory, will pthreadVC2.lib into the project, QT project contains pthread.h can use Pthread function.This is a dynamic link, because static link has not been successful, I suspect PthreadVC2.lib is just a shell, inside is called the dynamic library PthreadVC2.dll.The use of pthread under

#include It's meant to be the widget closed, and the program should exit normally. But actually the process is still running. The exit of the app in Qt defaults to exit automatically when the last window closes You can change it by setquitonlastwindowclosed. Documentation about the close () function Closes this widget. Returns true if the widget was closed; otherwise returns false.The IT sends the widget a qcloseevent. The widget is hidden if i

Ava: data is stored in large-end byte order. [the data is stored at a high address, the data is stored at a low address, and the data is stored at a high level before the array] Windows (intel Platform): data is stored in a small byte order. [low-level data is stored at a low address, and high-level data is stored at a high address, high data is stored behind the array] (windows receives the short sent by j

Generally, UTF-8 encoding is used by default in Linux, So we write Qt in Linux.ProgramThe following two sentences are generally added: Qtextcodec: setcodecforlocale (qtextcodec: codecforname ("UTF-8"); qtextcodec: setcodecforcstrings (qtextcodec: codecforname ("UTF-8 ")); This sentence may also be added: Qtextcodec: setcodecfortr (qtextcodec: codecforname ("UTF-8 ")); For more information, see. After the above settings, it is okay to d

When you close the main window in your project, you need to close other windows that are open at the same time and exit the application by doing the following: Associate the qapplication::lastwindowclosed () signal with the qapplication::quit () slot function in the main function, setting the properties of the main window to Qwidget::setattribute (Wa_ quitonclose,true); Other Windows This property is set to