How To Add Library In Qt

It is a very short and simple series yet. An object library compiles source files but does not archive or link their object files into a library. Qt Library Module Support. A typical example would be getting a Qt application accessed by multiple users on a web browser interface, thru different devices. Use the link below to share a full-text version of this article with your friends and colleagues. If you’re in a creative field, you might use a free resume website to build a creative resume that includes all the facets of a traditional resume, with add-ons like video, infographics, and links to your accomplishments. Follow the instructions of the wizard. QT is used to indicate what libraries (Qt modules) are being used in this project. Also, it leverages the Qt build mechanism which makes it very straightforward to configure and deploy. cbp file here with the name of the CMake project. dll to use from). That's all. PRO in the Qt Creator IDE. exe: 24-Feb-2014 15:39. h and you are ready to go. Example: myLib. See this post if you want to convert the image in gray. The qt library are also installed in the system directories, but those are older. DLLs, and some other files like configuration or certificate files. Air Compressor How-To Library - Air Compressor Articles, Tips and Buyer's Guides. cpp to your project just like you add your own main. Connecting the Boost library in Qt for MinGW and MSVC compilers. On earlier versions of the IDE, you may need to create it when you install your first library. I am new to the shared library stuff, so I have question about how to create/use a shared library, I am using Qt Creator with qt 5. In most cases, if you share your library, it will be in the form of a header file. You can create rich GUI application by using Qt. An object library compiles source files but does not archive or link their object files into a library. Even if you just want to add a simple through-hole electrolytic capacitor, there are dozens of libraries and parts to sort through to find the right thing. VLC-Qt is a free library used to connect Qt and libVLC libraries. The directories are searched in the order in which they are specified on the command line. Of the few different ways of configuring Qt for OpenCV, we will use the one that involves pkg-config. Before we start. So, I'm trying to see the output of various commands. So, it need use JNI method to add a C++ Dynamic Library to Android. Qt is indeed a C++ library/framework/header files. Qt will look up in the string tables of the meta object to find the corresponding indexes. QtAutoUpdater. This tutorial is based on two main components: Qt SQL and SQLite. The Qt SQL module provides a driver layer, SQL API layer, and a user interface layer for SQL databases. qrc) that you can manage in the resource editor. The documentation mentions that the "WINEDLLPATH"-variable is. So modifying and adding Qt based CMake commands will allow you building Qt apps. It is intended for use in mathematics / scientific / engineering applications. alternatively you can right-click your project in Qt Creator and select "Add Library", choose "External library" and browse for your library file: For libraries compiled with MSCV2010 compiler in windows, you look for. This method will only make the Library folder visible, and only for as long as you keep the Finder window for the Library folder open. To import the module use, for example, the following statement: QtWebKit provides a Web browser engine that makes it easy to embed content from the World Wide Web into your Qt application. Rather than carrying around a separate MP3 player or PMP, it's worth considering the iPhone as a music player so you can carry your iTunes library with you. MalaKa already provided you a link about some documentation from Qt. Project file config tags are now introduced to be able to control the dependencies of the library accoring to the needs. The directories are searched in the order in which they are specified on the command line. lib to be added in the project to build. 1 for maya 2017 on windows 10. 3) to your Qt project. In order to install more than the headers of the toolchain you could additionally add 'dev-pkgs' to EXTRA_IMAGE_FEATURES in build/conf/local. wxWidgets (https://www. The directories are searched in the order in which they are specified on the command line. Since our first app is a small GUI, we will need QtCore and QtGui. Python and Qt are a great combo, but there are some pitfalls that are easily avoided. This is the second method of adding libraries to Qt projects. Go to the Tools menu. dll library to a Qt project If this is your first visit, be sure to check out the FAQ by clicking the link above. a" and GLUT library "libglut32. On earlier versions of the IDE, you may need to create it when you install your first library. A mvvm oriented library for Qt, to create Projects for Widgets and Quick in parallel - Skycoder42/QtMvvm Skycoder42/QtMvvm. How to Import Videos to iTunes Library Want to import movie, music or home video to iTunes and then sync to play on iPhone and iPad or edit the iTunes movie in iMovie or Final Cut Pro? Since iTunes is very picky about what formats it supports, please first check the iTunes supported file formats. See gcc documentation for more information on how to build. Let's now add the entry point of our application. Yay! GIMP dropped X11, and now Wireshark too, thats just super cool ) It would be great if automatic updates would be incorporated at an early stage of the development of the Qt version. Adding the icon pack as a resource. When you build your project, this code is compiled into a native library that Gradle can package with your APK. Could anybody help me pls. Dear all, I'm not that experienced with Qt, but I'm migrating an existing application to use CMake as the build system. Create a PCL visualizer in Qt with cmake. Download the. Создаем первое графическое приложение - Duration: 26:46. The Qt Creator is a graphical frontend for calling qmake/make and - technically - it could be used for building and installing Qwt. CLion uses CMake based configuration files. This directory is in the implicit library-path. Therefore, in my opinion, Qt for Python strongly wins when it comes to licensing. To build the TBB source, we have to use the CMake functions provided by the ExternalProject module, viz. Click “Add”, then click “Promote”. Before processing any XML file, Qt must be configured. As a project grows, the time spent on building it becomes more and more valuable. The executable can then use this library instead of the standard square root function provided by the compiler. How to use windeployqt for collect all DLL?. Introduction to Qt: A C++ Cross Platform Application Framework. 2 of Dev C++. The UI interface that can be hammered out fairly quickly and easily in HTML5 can be a longer less productive experience with other C++. This download was checked by our built-in antivirus and was rated as safe. I have qtcreator installed using the qt online installer. Why would I need custom QT project template you ask? If you work with multiple external libraries like OpenCV, QWT etc, you would have to manually add the libraries' path into the project file for every new project that requires them; this quickly becomes an inconvenience if you have a lot of projects and you don't. An object library compiles source files but does not archive or link their object files into a library. I then make Qt Creator aware of my new Qt library and compile my app. How to Install Qt SDK on Microsoft Windows. Building Qt Widgets for Technical Applications. Select Layout > Top, Left, and Right buttons to anchor the grid layout to the parent. Getting Started Programming with Qt Quick Qt Widgets provides a library of UI elements which allow you to create classic desktop-style user interfaces. Inqlude is run by the community and open for contributions. The way the library is added depends on whether it is a system library or your own library or a 3rd party library located in the build tree of the current project or in another build tree. Qt is the faster, smarter way to create innovative devices, modern UIs & applications for multiple screens. lib" ) You still either need to specify the full path of the lib, or add an additional library directory as in the previous instructions. If a default. pro file as follows: QT += network. Learn more. a" are provided in the "\lib\w32api" directory. It is also possible to add new GUI controls written in Python to Qt Designer. I am writing this because I've spent more than four days to figure this out, and maybe others have the same issue. Any number of sources could be listed here. Introduction to LCD Displays and GUI Applications. Qt Creator will ask you to run cmake once, so that it can learn the include, library and build directories. i just want to get frames from camera. On Linux, you can just run qmake to create a Makefile. how to install Qt on Ubuntu 10. How to Install Qt SDK on Ubuntu Linux. If you are using Microsoft Visual Studio you can skip this step because it includes the so called auto-linking support. But you aren't supposed to #include dlib/all/source. Android Studio – Add External Jar to Library (Project Dependencies) There are many external libraries available that make many specific tasks simple and easy with the APIs and Classes they provide. Open a new project and in the file Project_Name. Program uses extensively RTTI, so the compiler used to build the program must support it. Inqlude is run by the community and open for contributions. If you click on Edit Signals/Slots at the top of the Qt window you will see the relationships between some of the UI objects. Exclusive Daily Sales. On Linux with GCC this step is not needed. This blog post is the first in a series that will cover using OpenGL with Qt. Language bindings are available for a number of languages including Python, Perl, Ruby, etc. #5-qt-nfl-mini-cooler-by-oniva-trade #Soft-Sided-Coolers The Mini Can Cooler by Picnic Time is a hard-sided cooler and large beverage can replica that doubles as a lunch box. The alternative is to dynamically load the library when it is required, and then resolve the symbols that we want to use from it. IPython supports Python 2. Libraries: the OpenGL library "libopengl32. The Qt Software Development Kit (SDK) is a cross-platform application framework that is widely used for developing application software with a graphical user interface (GUI). Don’t worry, lets add in the toolchain next and it should change to yellow. This is a very simple C++ tutorial which explains how to use the open-source library libgit2 to iterate through a git repository. I have problems with qtcreator (see qt-forums). source folder: /home/mike/opencv-4. Android Studio – Add External Jar to Library (Project Dependencies) There are many external libraries available that make many specific tasks simple and easy with the APIs and Classes they provide. Toggle navigation. When the web-version qt provides is not enough to take your desktop app to the web the way you planned, Thinfinity VirtualUI can solve your needs. So, it need use JNI method to add a C++ Dynamic Library to Android. You can customize your added resources and save the. This article is intended to be a basic introduction to the Microsoft Visual C++ Static and Dynamic Libraries. In a statement, Digia said that it plans to quickly make Qt available on Android, iOS and Windows 8 platforms. Now #include in one of your headers. py and demo_pyside2. Part 1 “The SQL Server Query Store feature provides you with insight on query plan choice and performance. How to add qt-gfx-transformed driver/plugin to Qt for Embedded 4. Windows API is a massive collection of interfaces that allow a programmer to use and include Windows features in their programs. 1 has dependencies on various private interfaces within the Qt library, and The instructions for how to resolve those dependencies turn out to be incomplete. As a patch release, Qt 5. Before adding any music it's a good idea to configure VLC Media Player to automatically save and reload your media library every time the program is started. The Qt Software Development Kit (SDK) is a cross-platform application framework that is widely used for developing application software with a graphical user interface (GUI). SQLite is an in-process library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. Qt | Cross-platform software development for embedded & desktop. Locate your Sketchbook Folder and the Libraries Folder Inside. 2012 steveire 32 comments CMake is a buildsystem generator developed in the open , and widely used for Qt based development. Qt Product Qt is a cross-platform framework with multiple tools. The Qt for Python project is developed in the open, with all facilities you'd expect from any modern OSS project such as all code in a git repository and an open design process. PyQt is able to generate Python code from Qt Designer. You may have to register before you can post: click the register link above to proceed. Qt/C++ - Lesson 056. 8 to follow this tutorial. I have installed all the necessary -dev and -dbg packages. This article demonstrates how to embed an icon in a Qt application. should I add any other library. In the Resource View pane, right-click the. Although the tutorial is targeted for OSX users, you can modify my suggestions for use in Linux and Windows. We would recommend first ensuring that you can add the library to a basic "Hello, World" project by following one of our OpenCV tutorials. PCL with Qt GUI The tutorial for using PCL with Qt has published in official site. If you want to use Qt 5 see this contributed article: How To Setup 64-Bit Qt 5 With NetBeans 7. Qt error: Can't open library file. The steps to do so are: Goto File -> New -> Import Module. Then I start application in qt creator and get this message: According to my understanding this message makes sense because I didn't find any possibiliy to add the necessary libraries that are listed up in the Make folder > options file. Recently I have been taking a lot of time to find documentation which clearly explains how to add Live555 to Qt Creator because I want to use the RTSPServer was written by Live555 library in my project. Buy affordable and unique Nordic Ware 21624 6 5 Qt Dutch Oven Pan W Cover Right Now To Bring An Upscale Feel To Your Home!, Complete all of those other room with beautiful Nordic Ware 21624 6 5 Qt Dutch Oven Pan W Cover, You will get additional information about Nordic Ware 21624 6 5 Qt Dutch Oven Pan W Cover, Browse many Nordic Ware 21624 6 5 Qt Dutch Oven Pan W Cover and Nordic Ware. The UI interface that can be hammered out fairly quickly and easily in HTML5 can be a longer less productive experience with other C++. Found the superiority embezzle for the purchase price. dll to use from). 5 / PySide 1. Qt Creator supports the Qt Resource System, which is a platform-independent mechanism for storing files in the application's executable. org) is a free, portable GUI class library written in C++ that provides a native look and feel on a number of platforms, with Windows, Mac OS X, GTK, X11, all listed as current stable targets. comments) More posts from the Qt5. In case you have multiple compilers installed, and want to build the Qt library using a specific compiler, you must specify a qmake specification. cpp to your project just like you add your own main. How can i add the binary version of that library into qtcreator so that the library is accessible in my cpp files in the app via: #include. 0 Compliler. Any number of sources could be listed here. # The extension is already found. Don’t worry, lets add in the toolchain next and it should change to yellow. When the web-version qt provides is not enough to take your desktop app to the web the way you planned, Thinfinity VirtualUI can solve your needs. The GTK-Qt Theme Engine is a project allowing GTK+ to use Qt widget styles. pro file under the project name. how do I add a path to the LD_LIBRARY_PATH I know that I am new to linux so here is a stupid question. Some of the MFC and Qt data types are easily converted to the predefined types from table 1; look at mfc_any_conversions. To use the CatWhisperer library in MyQtApp, qmake requires the location and names of the CatWhisperer libraries. So I'm working on something that has a ton of dials and buttons and all, and I would like to organize it into a set of collapsible tool boxes,. QT is used to indicate what libraries (Qt modules) are being used in this project. I have used MSVC2010 in this example but it should be the same for any compiler version from 2005 to 2015 (Visual Studio 2005 (8. Part 1 “The SQL Server Query Store feature provides you with insight on query plan choice and performance. What's the right way to permanently add a directory to the search path for dynamic libraries? (Preferably at build-time, rather than at run-time. Hi, (excuse my english) I am a new with ROS, I am trying to build a node for a driver, the problem is that I need to use an externe library that does the communication staff, how can tell the compiler to use this library in CMakeLists ? normally if I want to use this library I will do: g++ -g -Wall main_foo. Re: How to add a lib to a qt project Before you can use the PostgreSQL plugin for Qt you will have to build it. Usually, these files contain definitions of various functions which are declared in header files. We'll cover the main factors to consider when choosing graphics and input handling and how to scale down to low-end devices with Qt Lite. should I add any other library. - sherrellbc Jun 4 at 16:58. But cmake will end up with the following error: Object library target "Example" may not link to anything. Connecting the Boost library in Qt for MinGW and MSVC compilers. Core and de. Live555 is a static library. Add a new Label and Push Button in the form. This video is a part of a series of 4 sessions. Hi guys, I have added the include path correctly, but couldn't add lib path in Qt creator's. Adding the icon pack as a resource. It seems that the problem is either in environment variables or different libraries installed. To use the shared library from a client, some platforms may require a special import declaration as well. Get the full Qt experience with a licensing plan designed to support your business goals plus access to the official Qt Support. 1 has been released with the new Qt Creator 4. Was shown to be a great man. Using CMake with Qt 5 The basics of a powerful build system alternative to QMake 21. 4 MB in size. @faithinking Clearly you are frustrated :) - that's understandable. The first line of defense uses hardware instructions when possible. Any number of sources could be listed here. pro file so that they get automatically added to my make file. Nav ConnectCore 6. While you can use CMake to target Qt (if you do, you should read more about the Visual Studio support for CMake), Qt also provides its own Qt-optimized build system called qmake. cpp to include QImage always shows "unresolved include". pri file to keep things organized but I get so many no such file or directory for included files in the source. It is a very short and simple series yet. (4) USE the library in other programs: step 1: Add an include line (#include "mylib. You must download the Harvard University C. exe: 24-Feb-2014 15:39. In the project file (. It is augmented by a macro processor (moc) which enables signals and slots, among many other things. The autoupdater is provided as a Qt module. pro file - depending on what you need! For QML, you can import the library as de. Eclipse, C++ and Qt: use a C++ project as a library to another C++/Qt project I've been developing C++ applications (using Eclipse CDT) for quite some time now, but recently I tried to link a previously developed C++ project as a library into a newly created C++/Qt project. When I try to debug, GDB complains t. We'll cover the main factors to consider when choosing graphics and input handling and how to scale down to low-end devices with Qt Lite. Hey guys, i'm trying to figure out for days and days how to make a Qt3D widget (in C++) which could be integrated into a simple Qt GUI. What's the right way to permanently add a directory to the search path for dynamic libraries? (Preferably at build-time, rather than at run-time. Qt Product Qt is a cross-platform framework with multiple tools. The latest installer that can be downloaded is 19. In recent years the Qt project extended support from desktop platforms to mobiles like Nokias Meego, Sailfish OS, iOS, Android, embedded devices and more. This article is intended to be a basic introduction to the Microsoft Visual C++ Static and Dynamic Libraries. 7 statically for Windows using MSVC 14 compiler or in other words Microsoft Visual C++ 2015 which is included in Microsoft Visual Studio 2015. Hello Ankur and everyone, It seems that noone has came to this site after I posted my problem. How to Import Videos to iTunes Library Want to import movie, music or home video to iTunes and then sync to play on iPhone and iPad or edit the iTunes movie in iMovie or Final Cut Pro? Since iTunes is very picky about what formats it supports, please first check the iTunes supported file formats. Ah, ok so this is non-managed code then? In other words native C++? If so then you can't just use a reference to a managed assembly in the same way as you would in a managed code project. 1 on Ubuntu 16. Qt supports multiple platform using the same code base for all and can be deployed on multiple type of devices. ~/Qt/MaintenanceTool) Select Add or remove components and click on the Settings button; Go to Repositories, scroll to the bottom, select User defined repositories and press Add. Obviously, you can do the same for any other library. Setting PATH for QT If this is your first visit, be sure to check out the FAQ by clicking the link above. How to Create and Add an HTML Email Signature for Gmail, Yahoo, and more Can You Edit Your Outlook for iOS Email Signature? 50 Great Email Tips That'll Save You Time and Make You a Better Emailer. Source Directory -> Browse the project path. уроки по Qt и С++. SQLite and Qt SQL. Go to Cross G++ Linker > Libraries > Library search path. In a statement, Digia said that it plans to quickly make Qt available on Android, iOS and Windows 8 platforms. It allows Qt applications to fit into the environment as well as possible. How to embed Qt resources using CMake. Double click on Version Name and give the Qt Version a descriptive name such as QT 5. Let Android Studio build the project. Core and de. py to show how to use the widgets. it contains all the necessary steps from ZERO till the point where you can debug and run a simple PCL code. The official build of Qt Creator is done in an environment where the Qt Library is freshly built. 2 does not add any new functionality but provides many bug fixes and other improvements. So let's get straight to the point. Also, it leverages the Qt build mechanism which makes it very straightforward to configure and deploy. By the end of this course, you'll be comfortable building GUI front ends for the desktop as well as learning how to work with JSON data files and the Networking components of Qt. PyQt comes with a whole range of tools. It contains core classes for main media playback and also some GUI classes for faster media player development. Hi all, I have a dll I want to use for my empty VC++ project. Adding External Libraries to CMake Projects. So you must compiled them. Re: How to add a lib to a qt project Before you can use the PostgreSQL plugin for Qt you will have to build it. You'll hold a mountain supplementary success in others if you're serious about creating yourself blessing and increased influence. Создаем первое графическое приложение - Duration: 26:46. Page 1 of 2 - Qt - Using a static library - posted in C and C++: Hello, I would like to create a static class library in Qt and use it in another application. lib to be added in the project to build. Orange Box Ceo 6,780,868 views. Creates a special “object library” target. QtAutoUpdater. should I add any other library. If you don't like the idea of the music owner monetizing your video, you may need to select from the free songs in the Audio Library because most of the copyrighted music has this disclaimer. To achieve this, you need to install a couple of software: If you got all of this, you can start to build up your environment: Hop in to your local. Circular knitting needles are a lot of fun to work with. I don't think there will be much changes in any older version. Rather than carrying around a separate MP3 player or PMP, it's worth considering the iPhone as a music player so you can carry your iTunes library with you. View entire discussion (3. The main file demonstrates how to call the library file after it's compiled. 4 MB in size. Learn more Air Compressor Tips and How to Pick the Perfect Air Compressor or Accessory. Since VLC is based on libVLC, one should be able to have the same features that VLC media player has. The first thing Qt does when doing a connection is to find out the index of the signal and the slot. how do I add a path to the LD_LIBRARY_PATH I know that I am new to linux so here is a stupid question. Fill in the name of your library and the (base) path to create it in. x with MSVC 2010. Inqlude provides a comprehensive listing of all existing libraries for developers of applications using the Qt toolkit. Now, it might be tempting to add EVERY file from your icon pack but that is not the most efficient way. Air Compressor How-To Library - Air Compressor Articles, Tips and Buyer's Guides. 1, while the release of the stand alone QtCreator is built against Qt 4. Before adding any music it's a good idea to configure VLC Media Player to automatically save and reload your media library every time the program is started. If a default. A guide to installing Trolltech Qt 4 with MySQL on Linux and Windows. If you prefer to curl up with your legs to the side, opt for a loveseat or sofa instead. Use the link below to share a full-text version of this article with your friends and colleagues. How to compile. Now add, the required libraries in your source code: // Library needed for processing XML documents #include // Library needed for processing files #include. Make Graphs on Qt and Plot Your Arduino Measurements: As promised I come in my second instructable to explain you how to program graphs on Qt. Each has two lines, the first is the path to the binaries and the second is the path to the Qt libraries. In the project file (. Qt Creator supports the Qt Resource System, which is a platform-independent mechanism for storing files in the application's executable. Qt supports multiple platform using the same code base for all and can be deployed on multiple type of devices. There are a few things you should do before starting step 1: Get a metal or plastic oil-fill funnel, an oil rag and one or two quarts of the vehicle's correct grade of oil. To build the TBB source, we have to use the CMake functions provided by the ExternalProject module, viz. 3 (and possibly before) it is located in ~/Library/Application Support/org. Rather than carrying around a separate MP3 player or PMP, it's worth considering the iPhone as a music player so you can carry your iTunes library with you. This article assumes that you have a basic understanding of the C language, and are familiar with the Microsoft Visual C++ IDE. Creates a special “object library” target. How to embed an icon in a Qt application. Creates a special "object library" target. For this tutorial we will put the library into a subdirectory called MathFunctions. While you can use CMake to target Qt (if you do, you should read more about the Visual Studio support for CMake), Qt also provides its own Qt-optimized build system called qmake. What's the right way to permanently add a directory to the search path for dynamic libraries? (Preferably at build-time, rather than at run-time. 1/build/ I tried to define the below opencv. If you know a library that might be useful to others, please add a link to it here. Do not delete the files and directories created for try_compile calls. Instead other targets created by add_library() or add_executable() may reference the objects using an expression of the form $ as a source, where objlib is the object. When I try to debug, GDB complains t. 1, included in the Qt 5. gradle (Module:app) file. An object library compiles source files but does not archive or link their object files into a library. When I try to debug, GDB complains t. May someone tell me how to properly write my CMakeLists. Select Layout > Top, Left, and Right buttons to anchor the grid layout to the parent. In such a case, you can actually create Qt applications using Visual Studio. 4, inside a virtual environment. Qt supports multiple platform using the same code base for all and can be deployed on multiple type of devices. Getting Started Programming with Qt Quick Qt Widgets provides a library of UI elements which allow you to create classic desktop-style user interfaces. We will then learn how to convert QT Designer-generated code into pure Python code. * Open Terminal and check qmake version and its path. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: