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I have an application that has drag and drop functionality to import images and video’s. While developing, and testing through Visual Studio this has never given any problems.
After installing through a set up project, everything in the application works fine, except the drag and drop, which seems to be doing nothing. Are there any security settings that need to be set through an installer, or something of that nature that could be preventing drag and drop after installation ?
Yes, your drag+drop will not be permitted if your program runs with elevated permissions. It is called User Interface Privilege Isolation, Vista UIPI for short. It is complementary to UAC and controlled by the uiAccess attribute in the manifest entry that you’d use to elevate your process. As well as a certificate and a proper install location.
Realistically: don’t elevate your program. It is a security hole when restricted programs can get their objects dropped in your privileged program. UIPI tries to prevent that.
But debug your program first.