qt5 book

?? Qt4.8 has been installed before, but there is a problem that has not been resolved. I want to add an icon to every item in the menu, the menu item with the Qaction, but the qaction icon can not be displayed, the menu after the run is empty the position of the icon, The icon cannot be displayed. Began to think that the implementation of their own code is wrong, so will qaction add pictures of the two methods are tried again, or not. Later I put the source code on the elder's machine to run, th

When you use VS2013 + Qt5 + VS addin after developing a Qt application, how do you give this program to someone else to use it? This article describes the problem. The first step: need to be ready Vs2013 runtime dll , altogether 5 files if you are vs2013 c:\program Files ( x86) \microsoft Visual Studio 12.0\vc\redist\x86\microsoft.vc120.crt ) look for the following 3 files: 650) this.width=650; "src=" Http://s1.51cto.com/wyfs02/M02/8

developers.Eg: casually under a "serial debugging assistant" to do model.QT4 compile this "serial debugging assistant", generate a dependent link library only 4, file size can also be accepted;Change to Qt5 to compile, will find out a lot more things come out!Even after packing with the compression tool () is still larger than the uncompressed old version!A small tool (a MinGW compiled QT GUI program), depends on the DLL is too much, really a bit inc

int main (int argc,char* argv[]){ Qapplication app (ARGC,ARGV); New scene Qgraphicsscene scene; Create a rectangular graphic itemQtransform transform; //qt5 Add Transform.rotate (+0.0);//QT5 add Qgraphicsrectitem *item = new Qgraphicsrectitem (0, 0, 100, 100); Add a graphic item to a scene Scene.additem (item); Graphic item at point of output (50, 50)Qdebug () Create a view f

Configure an environment is almost deadly, online find the strategy is also uneven, fell dozen for a long time, or write a summary. Hope to be of some help to others. The first is the program to download: 1, vs2015,vs2013 or higher version of the can also. Go directly to the website to download it. 2, QT5,QT is used to write the interface. There are mainly Qt4 and QT5, for the first time. So not very unde

Qt5 official demo collections 32 -- Qt Quick Examples, qt5examples All articles in this series can be viewed here in http://blog.csdn.net/cloud_castle/article/category/2123873 Link to Qt5 official demo release set 31 -- StocQt Because the QML thread is involved in this Example, it is found that it belongs to the Qt Quick Example series. There are 19 demos in this series, covering multiple elements in Qt Qu

This is a created article in which the information may have evolved or changed. First, the installation of related dependencies sudo Install build-essential libgl1-mesa-devsudoinstall Qt5-default Qttools5-dev-tools Second, download the offline package, go to the download directory to run the installation package. ~/download ᐅ./qt-opensource-linux-x64-5.5. 1. Run Third, set environment variables Export pkg_config_path= $HOME/app/

Issue One: Error: C1083: Cannot open include file: "Qapplication": No such file or directoryCause: QT5 no longer uses the Qtgui module, but uses the Qtwidgets module.Workaround: Add GreaterThan in *.pro (Qt_major_version, 4): QT + = WidgetsQuestion two: Qt 5.2 uses the original QT4.8.4 project when Qwebview, Qwebframe and other classes cannot be compiled through.Cause: Qwebview, Qwebframe, Qwebpage, Qwebinspector, etc. these classes are moved to the Q

Today want to add a background image, found that Qt5 and the previous version is completely different Ah!QT4: (The background picture of the parent window does not affect the child window) qpixmap back (":/images/1/jpg");Qpalette Palett;Palett.setbrush (This->backgroundrole (), Qbrush (back));This->setpalette (Palett);This is drawbacks in the QT4 time! However, there is no egg in the Qt5.

iOS performance is not very good, mainly because Qt control in iOS is not the iOS native style, but similar to the Win32 style, so inconsistent with the platform performance is not through the App St Ore audit (of course, you can implement your own style, or other options, but this is undoubtedly a lot of work). It is not yet known whether there is an app that has good experience and practical value. As for the desktop, QT performance should be good, compared to GTK and wxWidgets this kind of p

"edit", "Select Encoding" menu item), then select gb18030/gb18030/ibm-1392/windows-54936, and then click the Reload button by encoding. As shown in.After completion, it is possible to display Chinese correctly, but if the project is turned off again, Chinese will not display correctly. So we still need to set it up. Select the edit, select encoding menu item again, and then select UTF-8, and then click the Save by Encoding button. As shown in.After this is set up, the file has been saved with U

I used qt4.6 earlier and made some programs. I feel that the writing interface with C ++ is quite smooth. If qt5 is available, you must try it. Try cross-compilation first, because the compilation on PC is normal. Cross-compilation generally requires consideration of the display mode, whether the acceleration hardware is displayed, whether there is a touch screen, or whether there is a keyboard. Download qt5