CODEWITHSUNDEEP
visual-studioqt
Archie Gertsman
Archie Gertsman

Reputation: 1661

Using a DLL with Qt in Visual Studio

I'm trying to use a DLL with a Qt project in Visual Studio. Normally to use a DLL, it is put in the program's executable directory. However, after putting the DLL in just about every directory I could think of, it is still not being used by the program. Is there anything extra that I need to do aside from putting the DLL in the executable directory? Thanks.

Upvotes: 2

Views: 410

Answers (1)

phyatt
phyatt

Reputation: 19152

The dll should be in the working directory of the executable. This is listed under the "Debugging" section of the Project Properties.

Almost all of the Qt plugin directories need to be in a specific folder next to the exe for it to be found (imageformats, platforms, etc).

Another way to find out if you are in the right directory is to add this line to your main.cpp:

#include <QDir>
#include <QDebug>

qDebug() << "Current Directory:" << QDir::currentPath();

Hope that helps.

PS also look at the order of dll search directories for windows. I'll post more later about it. https://msdn.microsoft.com/en-us/library/windows/desktop/ms682586(v=vs.85).aspx#search_order_for_desktop_applications

Upvotes: 2

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