Is it possible to change the primary monitor through dllcall?

[TheGeneral]

I was looking the UDF Screen Resolution Change source, and in MSDN documentation there is this option:

CDS_SET_PRIMARY

This device will become the primary device.

http://msdn.microsoft.com/en-us/library/dd183413%28VS.85%29.aspx

I have no experience calling a dll, how can i change the primary monitor? Do I have to enumerate displays first?

[PsaltyDS]

I was looking the UDF Screen Resolution Change source, and in MSDN documentation there is this option:

CDS_SET_PRIMARY

This device will become the primary device.

http://msdn.microsoft.com/en-us/library/dd183413%28VS.85%29.aspx

I have no experience calling a dll, how can i change the primary monitor? Do I have to enumerate displays first?

Post a link to the particular UDF you are looking at.

You have the right idea to enumerate the displays and get the exact string first. You could possibly hard code that string device name, but it would be less reliable.

>_<