I encountered a situation that I used a time-exhausting command
when I took on 3D dynamic graphic programming.
Next, what I am going to do is to creating "thread"
instead of that time-exhausting command.
For the process I dealed with was encapsulated within a class,
if I wish to create thread, I would have declared "ThreadFunc" as static.
However, all variable would not be used
becuase I can not access non-static variables.
Is there anybody tell me how to do? Or do I another way to do?
I prepare some psuedo code for specification as following:

//Loop Per Frame
frame()
{
renderAnime();
if(needcapture){captureFrame();}
}

//Function to Capture Frame
captureFrame()
{
captureSurface();
D3DXSaveSurfaceToFile(...);//Function of DirectX(Waste Time!!!)
}

//************************************************** ******************
I do not want to have any impact on the process of dynamic graphic
when I intend to save file(frame),
so that I create a thread for saving file(frame) process.
I don not know the idea is right or not? Thanks for anyone who helps!!!
//************************************************** *******************

Hey, I have no idea how to solve your problem, because I'm only a year 1 programmer, but I do have a tip for you. I realize that you only posted pseudo-code, but if you get around to posting actual code that's written in the C language, you should encapsulate it in [c] tags. Read here for more info.

__________________
-Aaron

Thanx a lot!!!

maybe you can use type casting