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Determine Time Since Last Logon

by Derell Licht

Find logon time on Windows 10

cpplinq - LINQ Query Operators for C++ Sequences

by Marius Bancila

An introduction to cpplinq, a open-source template library that provides LINQ-like operators for querying collections (arrays and STL containers) in C++11.

Domain Coloring Method on GPU

by Khaldoon Ghanem

This article describes how to visualize complex-valued functions of a single complex variable using the domain coloring method on GPU.

Using wxWidgets under Windows

by Oliver Kohl D.Sc.

This is a small "how to" that shows you how to get wxWidgets running under Windows

Latest Articles

Determine Time Since Last Logon

by Derell Licht

Find logon time on Windows 10

Using wxWidgets under Windows

by Oliver Kohl D.Sc.

This is a small "how to" that shows you how to get wxWidgets running under Windows

Domain Coloring Method on GPU

by Khaldoon Ghanem

This article describes how to visualize complex-valued functions of a single complex variable using the domain coloring method on GPU.

cpplinq - LINQ Query Operators for C++ Sequences

by Marius Bancila

An introduction to cpplinq, a open-source template library that provides LINQ-like operators for querying collections (arrays and STL containers) in C++11.

All Articles

MinGW

Determine Time Since Last Logon

8 Jun 2021 by Derell Licht

Find logon time on Windows 10

Linking to a DLL in an environment variable

26 Apr 2014 by User 59241

All of what SA has said is correct. That's why we have this:http://msdn.microsoft.com/en-us/library/ms682586%28VS.85%29.aspx[^]I think the best solution is put the dll where it can be found. However to achieve what you wish look at this. You can do it via...

Why so much difference in output of visual c++ and mingw

24 Jan 2014 by Sergey Alexandrovich Kryukov

What's the problem? The length of base64-encoded string? There is no strict one-to-one correspondence between original and encoded data, as the base64 format is somewhat free; it can be formatted in arbitrary manner, which may create some extra length. The round trip of original, encoded and...

How to use makefile to compile a project with multiple files ?

31 Dec 2019 by k5054

Take a look here: CMake Tutorial — CMake 3.16.2 Documentation[^]. That should guide you in creating your CMakeList.txt file. Are you sure you're using cmake, though? Generating a Makefile through cmake should produce a Makefile that is many lines long. In my case, even the simplest cmake...

Using lib files with MinGW

3 Jul 2012 by enhzflep

Nope. No can do.MS compiler produces .lib files, GCC produces .a files.You can't link .a files to projects with Visual Studio. Nor an you link .lib files to projects with GCC.What you trying to do/achieve?

compile a windows program for linux in QT

19 Dec 2012 by CPallini

It looks using a Linux virtual machine would be the easy path, see the following discussion: http://qt-project.org/forums/viewthread/16474[^].

MinGW build .lib file

14 Jun 2012 by Sandeep Mewara

Here, this should help: MSVC and MinGW DLLs[^]

compile a windows program for linux in QT

19 Dec 2012 by X Guy

Dear developers,i have a C++ program which is written in QT, now the development stuff is done and it is compiled to be used inside windows but now i want to compile it for linux too.but the thing is i don't know how to do it :-(Note: I'm using QT 4.7.4 32 bit and mingw on windows 7.

compile a windows program for linux in QT

20 Dec 2012 by Albert Holguin

Well... set up your compiler to and IDE onto your Linux machine (if you use an IDE). Now, you'll have to rebuild your Qt libraries for Linux, that should be in their documentation (although I have noticed their documentation kind of sucks). Once you have built the libraries, configure your IDE...

Mingw64 won't compile various packages

23 Jul 2016 by George Hayes

The problem is in pnglibconf.hYou will find a number of lines toward the bottom of the file the variable has been tabbed down to the next line.Simply bring those variables back up to the same line and save again.

Programcrash on 64-Bit windows

18 Jun 2011 by enhzflep

I recall reading of other users experiencing problems when porting 32 bit programs that rely on the registry to 64 bit machines, though have yet to bother to play with registry access on my win7 pc.You should be stepping in Debug mode to determine which line fails. At the very, very least...

InternetConnect() fails unless I reference InternetGetLastResponseInfo()

5 Sep 2011 by druciferre

This is perplexing me... I am writing a DLL to provide FTP upload and download functionality. I am using the Windows INET API's to achieve this, and when I make a call to InternetConnect() it fails with error code 6 (Invalid Handle Value). I was trying to figure out why it kept failing, so I...

Shell extensions for Windows using MinGW

11 Feb 2012 by krumia

Is there anyway I can use MinGW compiler system to create shell extensions? A tutorial, guide... anything? I am using Bloodshed Dev-C++ for development. (Because I have a very slow internet connection and cannot afford to download those bulky microsoft SDKs)Adding to that: What I want to do...

2 questions about BGI in MinGW

4 May 2012 by rodudeasdf

I am beginner using graphics.h and i don't know how to do those thinks in MinGW :1.How to make an animation to move a square in the right side ?2.How to spin a circle ?Thanks.

MinGW build .lib file

14 Jun 2012 by Alexandre Bencz

Hi, how I can build a .lib file using MinGW compiler ?Thanks.

WinAPI Questions (Code::Blocks & MinGW)

1 Dec 2012 by lmsmi1

Okay, this is my first questions here. I have a simple code for a program I'm creating in C++ WinAPI (no MFC or anything, just plain windows.h), and don't exactly get a few things:1. Text Output or "Labels" - Which way is best? I've seen four different way of text output or so called...

compile a windows program for linux in QT

20 Dec 2012 by IDENguyen

you can use linux open suse. It so good for you to compiler c, or c ++

How to enable non-disassembler debug in QT Creator?

30 Jun 2013 by YuriMaks

Hello :)Os - Win7 x64Qt - 5.0.2 for Windows 32-bit (MinGW 4.7) from http://qt-project.org/downloads[^]Start QT Creator, make a project (qt gui application), add breakpoint, press "start debug"... And watch disassembled code 0_0 I want normal debug mode, please help.

Need some MinGW PE-support support

1 Aug 2013 by Matthew Faithfull

I'm using CodeBlocks ( 12.11 rev 8629, SDK 1.13.14 ) to build a 32-bit Windows executable, ArchQORDemo.exeThe command line is as follows:-mingw32-g++.exe -std=c++11 -w -nostdlib -nostartfiles -nostdinc -nodefaultlibs -fno-exceptions -std=c++11 -g -D_QSYS_OS=_QSYS_MSW -DWIN32=1...

Need some MinGW PE-support support

1 Aug 2013 by Matthew Faithfull

Panic over, it was an entry point issue. MinGW ld is rubbish at reporting things link missing entry points even with --verbose on.Solved by adding -Wl, -e_mainCRTStartup to the command line and including the supc++ replacement twice on the link command, first and then again after the bootstrap...

Why so much difference in output of visual c++ and mingw

25 Jan 2014 by ansh_kumar

I want to base64 encode and decode a file and show it on the output screen.My input file is as follows:In other wordsMAC address: “XY-XX-XX-XX-XX-XX” “X” can be anything hexadecimal. The hexadecimal “Y”, written in binary format, is Y: “kmnp”, where “p” is the least significant...

Why so much difference in output of visual c++ and mingw

25 Jan 2014 by ansh_kumar

After a very long observation I found that visual c++ behaves in a very strange why when it comes to file pointers.See what i get from executing the following code:#include #include using std::cout;using std::endl;int main(){ FILE* file; size_t...

Linking to a DLL in an environment variable

26 Apr 2014 by manoranjan

There is no common way to search for libraries...In Windows you can use the PATH environment variable.In Linux or Unix you can use LD_LIBRARY_PATH environment variable to specify the library's path. If the path doesn't change (this is true most of the time), you can specify the...

lpthreadGC2 problem on Cygwin and the same on MinGW

9 Dec 2014 by Henri Aghaei

I have a folder includes many c++, c, h, object files as well as a MakeFile. So, I used Cygwin as well as MinGW to create an executable file namely calibrator.exe.So, I address the target folder and type in "make all". On both MinGW and CygWin got the following errors.CygWin:g++ -O3...

MinGW-w64 can't resolve threadpoolapiset.h declared functions

10 Oct 2015 by victorvg

When I try to build the following code using MinGW in Eclipse, I get the error "Function 'CreateThreadpool' could not be resolved"The code: #define WINVER 0x0603#define _WIN32_WINNT 0x603#include int main(void){ CreateThreadpool(nullptr); ...

Best way create execute file in qt mingw?

27 Mar 2016 by stackprogramer

my question is when i build release mode my simple app,how i can create exe file?i tested this solution: Let's say you've installed QT under c:\qtsdk Open your project, and compile it in release mode. Go to this directory: C:\QtSDK\Desktop\Qt\4.7.4\mingw\bin -- it contains...

Mingw64 won't compile various packages

23 Jul 2016 by DBPatric

I want to build GTKmm 3.20 for use with Eclipse as I have tried all other avenues to get GTK working and have given up on all of them, and besides, I figure if I can build it in its current version, I'll never have to depend on someone to build it for me. I want to be able to do 32-bit and...

Mingw64 won't compile various packages

1 Jul 2016 by Richard MacCutchan

Looking at those error messages it would appear that you have some macro definitions missing. The message:pngstruct.h:266:21: error: operator '>=' has no left operand #if PNG_ZLIB_VERNUM >= 0x1240would seem to imply that PNG_ZLIB_VERNUM has not been defined anywhere.

Best way create execute file in qt mingw?

17 Sep 2016 by stackprogramer

i shared solution here best way is cd $dir_projectqmake project.promingw32-makefinally execute file will be created.

Linker issue with mingw, notepad++ and freeglut

20 Feb 2017 by Graeme_Grant

I'm not a C++ dev, but found a StackOverflow Q&A[^] that should point you in the right direction.

Read a URL in C and save it as a string in memory not download into file.

15 Aug 2019 by OriginalGriff

Quote: Can somebody please give me a working code? Very basic program in C to read an URL into a String object or character array. We are more than willing to help those that are stuck: but that doesn't mean that we are here to do it all for you! We can't do all the work, you are either...

How to use makefile to compile a project with multiple files ?

31 Dec 2019 by TankRockett

Recently i've just built an SFML/C++ project on Visual Studio Code using CMake and MinGW.I've successfully compiled and run a test file in my project folder. Here's my Makefile: StarFire: g++ main.cpp -o main.exe -DSFML_STATIC -I F:\SFMLPrj\StarFirestc\Prefixes\include -L...

Linker issue with mingw, notepad++ and freeglut

22 Apr 2020 by Member 14810494

I know that this response is over 3 years removed form the original posting, but I ran across this posting while researching and wanted to offer a response. I've experienced this type of undefined reference before. It can happen when one is...

Linker issue with mingw, notepad++ and freeglut

7 Sep 2020 by VD-Flash

Here is the solution to your problem. I was experiencing the same problem as you when I first used FreeGLUT. First confirm that you have a OpenGL32 and FreeGLUT library. If you are using MinGW then these should be located in the lib directory...

How to solve error 'collect2: error: ld returned 1 exit status' in linux using MINGW

9 Oct 2020 by User 14926697

I want to connect two OS with each other and I'm using this code: #include #include #include #include #include #include #include #include #include...

How do I get the latest gcc with mingw64?

15 Sep 2021 by Richard MacCutchan

Look what I found when I typed 'gcc' into Google: GCC, the GNU Compiler Collection- GNU Project[^].

Problem when compiling in C++ using a mingw and cmake.

28 Oct 2021 by User 15226833

Hi everyone. My question is same title. Yes problem when compile. Please help me. This is a code of my program (in CPP): // Written by UKI COMPUTERS (ukicomputers.github.io - github.com/ukicomputers) // Based on (C) UKI COMPUTERS Self-Protecting...

cpplinq - LINQ Query Operators for C++ Sequences

3 Nov 2012 by Marius Bancila

An introduction to cpplinq, a open-source template library that provides LINQ-like operators for querying collections (arrays and STL containers) in C++11.

Domain Coloring Method on GPU

27 Jan 2013 by Khaldoon Ghanem

This article describes how to visualize complex-valued functions of a single complex variable using the domain coloring method on GPU.

Linking to a DLL in an environment variable

26 Apr 2014 by Sergey Alexandrovich Kryukov

There is no such concept as "runtime directory". There is no such concept as "linking to a DLL in an environment variable". There is no one predefined universal way of saying where to look for a DLL (I'm talking about native DLLs; .NET assemblies can be put in the well-defined Assembly...

Using wxWidgets under Windows

19 Aug 2013 by Oliver Kohl D.Sc.

This is a small "how to" that shows you how to get wxWidgets running under Windows

Programcrash on 64-Bit windows

15 Jun 2011 by HartzFear

Hello,I'm writing a function which load a keyboardlayout using the registry. The whole programm works fine under a 32-Bit windows but it crash on a 64-Bit windows.// headerfile#define TYPEDEF_VK_TO_WCHARS(n) typedef struct _VK_TO_WCHARS##n { \ BYTE VirtualKey; \ BYTE ...

Shell extensions for Windows using MinGW

10 Feb 2012 by Chris Meech

For starters, try here[^].It's possible that examples from the articles will compile in your environment, but there's no guarantee. If there are libraries missing, then you may still have to download the SDKs from Microsoft.

Using lib files with MinGW

3 Jul 2012 by iPick12

Hi, I was wondering whether it is possible to create lib files with gcc and use them also with gcc. As lib files I mean the files produced by Microsoft CL that have the extension lib and look like "advapi32.lib". My platform is Windows NT. I already know that I can produce and use .a files from...

How to enable non-disassembler debug in QT Creator?

30 Jun 2013 by YuriMaks

So...1. open project file (.pro), resave it2. go to "project tab", reselect debug configuration modesomehow it works now

How to solve error 'collect2: error: ld returned 1 exit status' in linux using MINGW

9 Oct 2020 by OriginalGriff

Probably it's your compiler / linker command line. Have a look at this, and compare what you use with the solution there: c++ - MinGW linker error: winsock - Stack Overflow[^]

Problem when compiling in C++ using a mingw and cmake.

18 Oct 2021 by OriginalGriff

Read the error message: Quote: master/src/rp2_common/pico_standard_link/crt0.S.obj: in function `__get_current_exception': (.reset+0x9c): undefined reference to `main' You application does not contain an entry point, and cannot be built into an...

2 questions about BGI in MinGW

4 May 2012 by CPallini

AFAIK you cannot use BGI with MinGW. BGI is the graphics library provided by Turbo C/C++ (are you using WinBGIm[^]?).[Update]Move the square to the right:Erase the square at current position {x,y}.Update position {x,y}->{x+dx, y}.Delay for some time (e.g. calling Sleep()...

Linker issue with mingw, notepad++ and freeglut

22 Apr 2020 by Member 13013288

I'm a student working with OpenGL in C++. I'm trying to get freeGLUT to work with MinGW. I'm asking because I've already tried a ton of sites, multiple times and there is no clear solution, at least to my knowledge. I've had this problem for months.Although using Visual Studio would be the...

Cygwin vs. MinGW – What to Prefer When

9 Oct 2012 by RizviHasan

A comparison

C++ zLib Simple Unzip/Decompress Source Implementation Example

26 Jul 2013 by Sicppy

I am looking into creating a self extracting archive, I don't have any code as of right now, but my idea is simple.Extract internal zip file to temp directoryRun setup scriptDelete temp directorySimple enough, I would like a simple c++(mingw) example of an implementation of the zLib...

Linking to a DLL in an environment variable

26 Apr 2014 by Sicppy

I would like to know how to link to a DLL stored in a place other than the runtime directory. The location of the directory is as follows %LWE_HOME%/lib/engine.dll How do I tell the program to look for it there instead of in the runtime directory?I am looking for a cross-platform solution....

How do I get the latest gcc with mingw64?

15 Sep 2021 by Noneyabees

Currently my version of gcc is 8.1.0, but i want the latest and greatest version of gcc. Is there anyway to do this? Online its pretty hard to even figure it out. What I have tried: I have tried using google for the answer.

Problem when compiling in C++ using a mingw and cmake.

28 Oct 2021 by User 15226833

In this line: #include "keypad/pico_keypad4x4.h" Replace with this: #include "keypad/pico_keypad4x4.c" Beacuse, this library HAS NOT GOT a main function (.h file C++ in this thing calculate as program).