AllocConsole() Not posting

[Denis Dolzhenko]

So the situation is that my GUI posts to the allocated console perfectly when I open the application within the QT creator application, but when I try to launch the application as a separate .exe file in its own folder the console pops up but nothing gets posted.

That's how I initialize the console (right after ui->setupui(this);) :

FreeConsole();
// create a separate new console window
AllocConsole();
// attach the new console to this application's process
AttachConsole(GetCurrentProcessId());
freopen("CON", "w", stdout);
freopen("CON", "w", stderr);
freopen("CON", "r", stdin);

That's how i try posting to the console ( all of those ways work in QT creator and none of those work in the separate app)

puts("puts");
std::cout << "std::cout" << std::endl;
printf("printf\n",time.wHour,time.wMinute,time.wSecond);

[Denis Dolzhenko]

This post is deleted!

[Denis Dolzhenko]

So the console starts working randomly sometimes.

I think the problem is attaching the console to the app. I think so because when the console works right, I can close the console window and it will close the GUI automatically. But in situations when it does not post, I close the console and the GUI stays open.

[jsulm]

@Denis-Dolzhenko If you want to start your application outside of QtCreator then you need to deploy your app properly first. That means you need to crate a directory with your executable and all libs and Qt plug-ins which are used by your application.
See http://doc.qt.io/qt-5/deployment.html

[Denis Dolzhenko]

Here is everything I have in my final directory, all of my features worked properly except for the console thing

[SGaist]

Hi and welcome to devnet,

The upload feature is currently broken, please follow this guide.

[Denis Dolzhenko]

@SGaist Thanks, but I think that's not the problem, I figured something else out.

So my assumption ( found it on https://stackoverflow.com/questions/432832/what-is-the-different-between-api-functions-allocconsole-and-attachconsole-1) is that console does not always attach if I launch the executable from the explorer.

"When run from a command prompt, two message boxes containing a 1 are displayed, meaning both calls succeeded. When run from Start -> Run, the first box contains 1 and the second contains 0, meaning that only the first call succeeded. The second one fails because explorer.exe (which is the parent of a process launched from Start -> Run) doesn't have a console."

I tested it and it works 100% of the times when I launch the app from the command prompt.

Is there a way I can make this work without using the command prompt?

[SGaist]

Out of curiosity, why do you need that command prompt for ?