Problems running projects

giesbert

Hi croussou,

perhaps the links from volkers post help you to find, what you need:

[quote author="Volker" date="1300382119"]See the general hints on "Deploying Qt Applications":http://doc.qt.nokia.com/stable/deployment.html and the specific instructions for "Windows":http://doc.qt.nokia.com/stable/deployment-windows.html

These docs are available in Qt Assistant too. [/quote]

croussou

Okay, I located the .dll in question in the following directories.

C:\Qt\2010.05\qt\bin\mingwm10.dll

C:\Qt\2010.05\mingw\bin\mingwm10.dll

Question is, why windows search cannot locate the .dll and I need to manually locate them in their directory?

Now, as far as ZapB's post is concerned, how do I put the dll’s parent dir in the PATH search path?

ZapB

It depends on how your %PATH% environment variable is configured. If the dir:

C:\Qt\2010.05\qt\bin\

is listed in that env var then windows will look in there for dll's when it loads applications. To set the env var (from memory) go to Control Panel->System->Advanced->Environment Variables. Then edit the %PATH% entry to include the above path (don't forget to separate it from the other paths with a semi-colon).

I've not used the Qt SDK on Windows but I am surprised that it did not set this up as part of the installation.

Then restart qt-creator and see if you can debug your app. You shoudl also be able to run it from Windows explorer too now (assuming no other dll's remian unfound).

giesbert

windows searches for dll in the following way:

Current directory of your executable

windows system directory

all paths loacted in the %PATH% environment variable

Side by Side is searched in :
C:<Windows>\system32\WinSxs

You can look into this "MSDN article":http://msdn.microsoft.com/en-us/library/ms684175(VS.85).aspx for more information on that.

bq. The first directory searched is the directory containing the image file used to create the calling process (for more information, see the CreateProcess function). Doing this allows private dynamic-link library (DLL) files associated with a process to be found without adding the process's installed directory to the PATH environment variable. If a relative path is specified, the entire relative path is appended to every token in the DLL search path list. To load a module from a relative path without searching any other path, use GetFullPathName to get a nonrelative path and call LoadLibrary with the nonrelative path. For more information on the DLL search order, see Dynamic-Link Library Search Order.

croussou

Sigh...

I am afraid it didn't work. I am desperate right now so much, I really need to get some work done during the weekend.

Any other possible solutions? I don't know maybe I did that process in the wrong way? I have created a new variable called qtcreator and inserted C:\Qt\2010.05\mingw\bin;C:\Qt\2010.05\qt\bin.

Do you think I did something wrong?

I am sorry this thread is taking ages to solve.

ZapB

What? Who said anything about making a new environment variable called qtcreator? Just add C:\Qt\2010.05\mingw\bin;C:\Qt\2010.05\qt\bin\ to the existing PATH environment variable.

croussou

Okay, this time it was done right.

Still doesn't work though, still displaying same message in Qt, but in windows the .exe file displays a new error now.

"The program can’t start because MSVCP71D.dll is missing from your computer. Try reinstalling the program to fix this problem.”

What does it mean anyway? At least has the other one been solved?

ZapB

This is the same type of error. The system cannot find another dll. In this case MSVCP71D.dll. This looks to be a debug dll from the MS Visual C toolchain.

Can you clarify which compiler you are using to build your app please? You should be using mingw or MSVC not both. What is your Qt built against? From your previous posts it looks like you are using Mingw. I am not sure why you have this dependency on the MSVC debug runtime.

Scylla

Please use dependency walker. With this you will see which lib is missing.
"Dependency Walker":http://www.dependencywalker.com/

croussou

Thanks for still providing help.

I think I am using mingw but how can I know for sure?

Do you think Microsoft Visual Studio 2010 has something to do with this? At work I have NetBeans, Qt, Microsoft Visual Studio, and Eclipse on same computer and works great all together.

I don't understand what could be the problem on this computer.

Scylla

Load the binary in the dependency walker and show the picture. Then we can see what's wrong. I'm having all versions running on my pc. It's just a matter of environment configuration!

croussou

Sorry, by binary you mean the qtcreator.exe?

If so, it displays the IEFRAME.dll as red with a small hourglass on the side.

Is this any helpful?

Thank you.

Scylla

You want to start a application, isn't it? This application you have to load in the dependency walker.

croussou

Okay, I have loaded the .exe file of my application and this is the output...

MSVCP71D.DLL (yellow question mark)
MSVCR71D.DLL (yellow question mark)
QTCORED4.DLL (red)
IEFRAME.DLL (red + hourglass)

By the way, the application doesn't run at all. Both on Qt or from Windows.

giesbert

From Qt? You mean creator!

As you said you build for windows, which lib wants to include MSVC[P|R]71D.dll ?
QtCored4.dll is the debug version of Qt. Did you put the libs beside the exe?

Where is the screen shot of dependency viewer?

ZapB

Is this on the development machine or on some other random machine to which you are trying to deploy your application?

croussou

I am implementing and testing my application on the development machine.

This is the print screen from dependency walker with <filename>.exe loaded.

!http://img854.imageshack.us/i/dependencywalker.jpg/(DependencyWalkerPrint)!

And yes, I mean Qt Creator, the damn app won't run in any way.

I have tested the application on another machine with Qt Creator and it works perfectly.

Thanks.

ZapB

Link or image is missing.

croussou

Oh I tested and it works. Open image in new tab.

Well here is the actual link

http://img854.imageshack.us/i/dependencywalker.jpg/

ZapB

OK. Well that shows that QtCore4d.dll cannot be found in the dll search paths. LOcate this dll on your machine and make sure that it is in one of the dirs listed in the %PATH% environment variable.

Can you paste the value of the %PATH% env var please. Also where are your QT libs installed?