You mean 'DLL'?
Where did you put it? Are you sure dll is in correct bitness (same as your program)?
Usually there is a message if dll can't be found or if it is not correct.
Yes DLL.
The DLL is in a folder with the exe.
I have created an ini file, this allows me to disable the connection at startup.
Also, check task manager to see if your application is there, after starting it.
Maybe it is started, but not showing main window.
Maybe you are trying to create or open database, and that doesn't work for some reason and your code is stuck there.
As already written in the first post.
I do not get any error message.
The application is also not present in the task manager.
Nothing happens after double clicking the exe.
I use exactly the same exe on all PCs.
On the PC on which I compiled it everything works.
So it can't be that the form was deactivated/hidden.
This would at least explain why I don't get an error.
Maybe the form is displayed outside the displayed area.
But then my application should be visible in the task manager.