March 15, 2012

Kottalizer Kottalizer
Lab Rat
4 posts

Deploying an Application on Windows

 

Howdy people,

I’ve made an application using Qt Creator and it runs flawlessly on my Arch Linux desktop computer. Now I want to give it to my friends, but the problem is that most of them use Windows. Therefore I’m required to compile the application for Windows systems, and while that’s not a problem, I can’t seem to find the right DLL-files.

When I had compiled my application I followed this YouTube tutorial to find the right DLL-files:
http://www.youtube.com/watch?v=X1BsPQue5-k

I copied all DLL-files that Dependency Walker told me were missing to the same folder as my .exe file is in. Despite that, the application crashes on connect (it’s an IRC client and it crashes when you have connected) and I have no idea why.

I think it’s related to what Dependency Walker tells me about IEFRAME.dll, but I’m not sure how to solve it:
http://delafilen.nu/u/1331814661_DW.png

QtCore4.dll, QtGui4.dll, QtNetwork4.dll, libgcc_s_dw2-1.dll and mingwm10.dll were all copied from this folder:
C:\QtSDK\Desktop\Qt\4.7.4\mingw\bin

What have I done wrong?

- Martin

9 replies

March 15, 2012

Deleted Member # 269f Deleted Member # 269f
Lab Rat
251 posts

If your app runs and then crashes afterwards on connect, then it may not be a deployment issue.

March 15, 2012

Kottalizer Kottalizer
Lab Rat
4 posts

It runs perfectly fine if I run it from Qt Creator, on both Windows and Linux, though…

March 15, 2012

Deleted Member # 269f Deleted Member # 269f
Lab Rat
251 posts

Then maybe you are including the wrong versions of DLLs with your app?

March 15, 2012

Kottalizer Kottalizer
Lab Rat
4 posts

Is there any fool-proof way of finding which version I should include? Can I see the paths to the files Qt Creator uses? I have tried with several different DLLs with the same name, without getting anywhere.

March 15, 2012

Deleted Member # 269f Deleted Member # 269f
Lab Rat
251 posts

I am not that adept in that area myself, hopefully someone more experienced will be able to help you. Does the OS provide you with any information upon the crash that you might want to share?

March 15, 2012

Kottalizer Kottalizer
Lab Rat
4 posts

There might be a way of catching that, but I don’t know how to do that in Windows. Any help on that would be appreciated too.

March 15, 2012

Scylla Scylla
Lab Rat
238 posts

You can use dependency walker [dependencywalker.com] to get the dependencies of your app. It cannot resolve plugins!

March 15, 2012

Deleted Member # 269f Deleted Member # 269f
Lab Rat
251 posts
Scylla wrote:
You can use dependency walker [dependencywalker.com] to get the dependencies of your app. It cannot resolve plugins!

In his first post he already mentioned that he used dependency walker.

March 15, 2012

Scylla Scylla
Lab Rat
238 posts

Sorry, I missed this. We had a similar problem this week. The problem was that there where some different Qt libs in the system folder installed.
Another problem can be, that if you start you app from Qt Creator, the working path is set explicit. If you start your app anywhere else, the path is different.

 
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