When I put an TJvHidDeviceController ( HIDKomponent from soft-gems.net ) component on my form and run the application I get an error message : device cannot be
In the Delphi Form Designer how do I undo changes. I press Ctrl + Z and nothing happens, I go to Edit -> Undo and it is grayed out. Am I just missing somet
Based on the input from @David, I have edited my post to include more code (the Main procedure and two functions). The problem remains the same: I want to che
My app contains documents in its database. The users can open the documents in which case, the document gets saved to a temporary folder and gets opened on the
What is the basic difference between Free and FreeAndNil? Is FreeAndNil = Free + Nil? When should I use Free and when should I use FreeAndNil?