问题
I am trying to determine if User Account Control is currently blacking out the screen/asking for permission.
I have an application which uses SlimDX and when UAC takes over the screen it causes the DirectX device to be lost, I can recreate the device once the UAC window has been closed, if I try this before(even in a try{}catch{} and loop the application crashes)
I have looked over at pinvoke and msdn and I can't seem to find anything about this. Does anyone have an ideas?
As a note: I do not want to interact with these prompts in any way, I only want to check if they are open so I can delay the creation of my DirectX device.
回答1:
If a UAC prompt is currently on screen then C:\Windows\System32\consent.exe will be running. There are ways to be notified with a event when a program starts or stops, you can use them and have your program perform the action to recreate the DirectX device after the consent.exe program terminates.
回答2:
Sorry for making a late answer. But I think it may help. As far as I see, you are not looking for a way to see if UAC is running, but a way to check whether UAC is blocking the screen. I've confirmed that UAC is using SwitchDesktop to change to another desktop, so you can just use GetInputDesktop to get the 'active' desktop. Then use GetUserObjectInformation to check its name. The 'normal' desktop should be default, while UAC will be running on the WinLogon desktop. Wish it will help.
来源：https://stackoverflow.com/questions/44751919/how-to-check-is-uac-is-currently-blacking-out-the-screen