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The dynamic link library used by the official QT development environment requires a large stack of DLLs to be copied when the generated EXE is released.If you go to copy the DLL, it is likely to absent-minded, causing EXE in another computer does not work properly.So the QT official development environment comes with a tool: Windeployqt.exe.Take the official Qt 5
I started to learn QT creator. Today I installed it on both Linux and Windows. in Linux, I can compile and execute my ownProgramIn Windows, a problem occurs. When executing the program, the system prompts "mingwm10.dll cannot be found". The solution is to statically compile the QT library. Steps: 1. Call QT command prompt in the Start Menu, 2. Run configure
QT provides good support for JavaScript, and if you look through the documentation, you know that QT has two different JS package engines: Qscriptengine Qjsengine Qscriptengine appears earlier (since Qt4.3), based on WebKit's JavaScriptCore engine, which provides relatively rich APIs, but has been officially labeled deprecated Qjsengine is the official version of the Qt5.0, based on Google
As mentioned above, the Qt container class provides two traversal devices: Java and STL. The former is relatively easy to use, while the latter can be used in some algorithms with powerful functions. For each container class, there is a corresponding traversal: Read-only traversal and read/write traversal. The read-only traversal tool has three types: QVectorIterator 650) this. width = 650; "onclick = 'window. open (" http://blog.51cto.com/viewpic.php
long time no update (in fact, big do not have to constantly update it), has been using Qt4, recently thought to turn to QT5, Msys2 is self-brought QT, but the tool chain will often update, rely on more, easy to be convenient, did the last set of QT tool Update, title, Qt-4.8.7 as the QT4 version of the bottom of the press, using gcc-6.2.0 recompile , only 32-bit
This experience is mainly the author of the development of the QT program in the development of the problems encountered, and now share to everyone, mainly in QT embedded like resource files.Please leave a message if you have any questions.Tools/Materials Qt Designer Qt Open Source 4.8.5 Method/Step
A small record of qt Learning (2), qt Learning Record Well... This time I received a ticket A graphical interface is required. You can just consolidate and learn QT. I took it without hesitation. The following issues are recorded:1. QWidget and QDialog The slot functions in QDialog include accept () and reject (), which can be directly used. In addition, the QDia
QT adds the program icon and window icon, and qt adds the icon windowProgram icon material preparation Icon file: *. ico file, which is stored in the same directory as the source file, for example, "myapp. ico" Write icon Write "RC_ICONS = *. ico" into an independent row in the *. pro file, such as RC_ICONS = "myapp. ico" Generate a program Run the program to view the software with icons under the
Let's use an example to explain the application of the stylesheet. This example is based on the QT Demo, more complex, there is a certain degree of difficulty, basically covers the previous chapters of the various skill points, mainly including: How to customize the style sheet for QT How to apply a style sheet in an application How to set the style of an application without using a style sheet How to use a
Tags: ODBC change batch rollback CString set password SQL command moveqt-win-commercial-src-4.3.1, qt-x11-commercial-src-4.3.1Microsoft Visual C + + 6.0, KDevelop 3.5.0Windows Xp, Solaris 10, Fedora 8SQL Server, Oracle 10g Client , driver compilationThere are two database drivers to be mentioned here, namely ODBC and OCI The ODBC driver is compiled in the Windows operating system:Execute the following command to generate Qsqlodbc4.dll under the%qtdir
screen sizes, but what's the effect of running your app, depends on how you use the content described above ...Other articles in this series: Qt on Android: text-to-detail Hello world whole process Introduction to the development of Qt 5.2 for Android under Windows Qt for Android deployment process Analysis QT
Set the app name for Qt on Android to Chinese This morning, a friend in the group asked me how to set the name of the Android app developed by Qt to Chinese. I tried two methods. After the blog contest finals, please vote for me: the Qt Quick image processing instance meitu xiuxiu (with source code download). Thank
Research on the new rendering of Qt bottom scene graph (ii.)The previous article introduced the QT new rendering of the underlying scene Graph, how can we use this framework to add a brilliant effect to the application? First, we want to make clear what the purpose of using scene graph development is. If it's a simple, purely 2D graphical interface, use the QT
1. Download QT source code 2. Configure the compiling environment $. /configure-Embedded ARM-QT-GFX-qvfb-QT-KBD-qvfb-QT-mouse-qvfb-QT-libpng-QT-libmng-QT-libjpeg-
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
using the AddWidget interface, adding a sub-layout using the Addlayout interface. This interface is not commonly used, and its usage principle is to add addwidget widgets and Addlayout layout to this variable.2) AddWidget (Qwidget *w) adds this widget to the specified layout, using the AddItem3) qsize closestacceptablesize (const qwidget * widget, const qsize size) [Static]Returns the size dimensions that meet all throttling policies to the widget, including Heightforwidth (), and as close to s
IfProgramFor example, if you need to load a large amount of data in advance, the program generally has a startup screen. In this way, the user can see that the program is being started rather than simply waiting for it. It also displays some useful information about the program, such as the Program Logo, function module, or product information. In the QT application, you can use the qsplashscreen class to start the screen. The following is a simple
Qt Address Book (2) Add addresses, qt Address Book add addresses In the last Qt Address Book (I) interface design, we mainly implemented the address book interface and used the layout manager to layout elements, it also explains the concepts of "subclass" and "ownership. In this article, we will add three QPushButton buttons on the interface to save the Name and
Qt custom tag button and qt custom tag When you get started with Qt, you will be surprised by its extremely convenient cross-platform approach and want to try Qt. Gradually, you will find that some of Qt's built-in controls cannot meet your own needs. At this time, we need to define our own controls. In general, there
I. Advantages of QT: 1. cross-platform2. the signal-slot mechanism is too elegant. Compared with MFC, its non-Form class also supports this mechanism. This designer's idea is admirable, and because its non-Form class also supports this mechanism, so many of its usage makes people feel bright, such as the use of qtimerevent, whether it is a form or not, can support timer, this is much more flexible than MFC3. Easy to use. Many mechanisms are similar to
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