C#:"kernel"

[Dark Crystal]

hi every 1 ;

how can i deal with "kernel" functions or any lib in C# ?

e.g. in vb

Private Declare Function QueryPerformanceFrequency Lib "kernel32" (ByRef PerformanceFrequency As Long) As Boolean

how can rewrite it in C#?


thanx :-\

DC

 

[dynamic_sysop]

		[System.Runtime.InteropServices.DllImport("kernel32.dll")]
		static extern bool QueryPerformanceFrequency (int lpFrequency);

 

[Dark Crystal]

thanx my prob was typemiss

but method should be(64 bit)long and (out or ref) ether:

static extern bool QueryPerformanceFrequency(out long PerformanceFrequency);

or:

static extern bool QueryPerformanceFrequency(out long PerformanceFrequency);

cuz int is 32(bit) and ull lose some digit so low performance

other Q: what is the deffrent between out(???) and ref(i know this)?

cuz when i read same code i was found out is used in ref places and i tried in privuos method its work.

sorry for my bad english

and thanx agine