How to Build for Windows XP Using MSVC 2015/2013/2012

To make your Qt application compatible with Windows XP (32-bit) you have to add the following line to your PRO file. Note that this will enable targeting for Windows XP without disrupting the application’s behavior in higher Windows versions.

QMAKE_LFLAGS_WINDOWS = /SUBSYSTEM:WINDOWS,5.01

 

You also need to install Visual C++ Redistributable for Visual Studio 2015. You can find Microsoft official link below:

https://www.microsoft.com/en-us/download/details.aspx?id=48145

QRecorder, Screen Recorder for Windows

QRecorder (version 1.0.1) is a new application I wrote for screen recording. Record your desktop activities with this simple tool. It requires no configurations and it’s easy to use. It supports all windows versions from the good old XP to the recent Windows 10. You can record part or whole of the screen. You can make QRecorder totally invisible while recording. Well, head to download page and test it for yourself. Click on the icon below to be taken to QRecorder official webpage.

QRecorder
QRecorder v1.0.1 for Windows

Credits

This application uses Qt Framework, OpenCV Library and icons from Freepik. All of them are credited in detail inside QRecorder. This free application is sponsored by ToTRVL.com.





How to enumerate installed Windows Media Codecs in Qt

To get a list of all available Windows Media Codecs in Qt you have no other choice but to use C++ interfaces from Windows Media Format SDK. In this post I am sharing an example source code which allows you to do that in Qt. If you are developing using Qt and MSVC compilers for Windows then  you can definitely download this source code, build and run it for yourself.

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How to use FTP in Qt (for Windows)

If you are in a situation that you want to upload a file to a FTP server or delete, rename, copy some files on a FTP server in your Qt programs there are no definite choices anywhere. At least that is the case with Qt 5.5. You usually have to use a platform dependent library. So here it is. I use this library when I need FTP access in Qt for Windows. It uses Windows API therefore you won’t be able to use this in Linux or MAC. Download from the link provided below (you may have to register at codeproject.com) and follow the steps to be able to use it in your Qt programs.

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How to limit 32-bit applications to one instance in Visual C++ (with or without Qt)

I use the code from the following article to allow only a single instance of my programs (mostly written using Qt Framework) to run on Windows. Some programs (specially the ones which connect to a specific type of hardware or resource) need this limitation to avoid conflicts.

Please also note that this code is specific to Windows.

Continue reading “How to limit 32-bit applications to one instance in Visual C++ (with or without Qt)”