Make QtBluetooth.dll fail more gracefully

[K4sum1]

So QtBluetooth.dll supposedly only supports Windows 10 1511+. This dll also has winrt components that result in an error when used on XP. It would be nice to have this delay loaded or something so programs that use it don't just hard fail to run. However I'm not sure if an instance like that could happen here.

Qt5Bluetooth.dll - missing API-MS-WIN-CORE-WINRT-L1-1-0.DLL (RoGetActivationFactory, RoActivateInstance), missing API-MS-WIN-CORE-WINRT-STRING-L1-1-0.DLL (WindowsCreateStringReference, WindowsGetStringRawBuffer, WindowsDeleteString)

These are not directly named in the source code, but they appeared between 5.9 and 5.10. I believe they are related to these commits, but not entirely sure.

qt/qtconnectivity@dbd7034
qt/qtconnectivity@ed5a113

[teknixstuff]

The easiest way to make this work would be to rename QtBluetooth.dll to something else, and then make a stub QtBluetooth.dll that has definitions for all of the exported functions, but then just call LoadLibrary and GetProcAddress to get the function from the original QtBluetooth and run it.

However, if you're only dealing with a couple of troublesome imports, it would be easier to just add your own stub implementation for them into QtBluetooth.dll which would then LoadLibrary and GetProcAddress the original ones.

[K4sum1]

Both of those could work, although idk how to do either.

[forsakenfan]

yeah cuz ur a skid