which is faster

[dogfish227]

im trying to get just 1 pixels color from a surface in DX7 should i use the

getlockedpixel

or getlockedarray

DX4VB says getlockedarray is faster but im guessing that this is because you normally want to look at more that one pixel so my guess is getlockedpixel

also

Sub ProcessMemory
Dim Colour as Long
Dim rArea as RECT
Dim ddsd as DDSURFACEDESC2
 
rArea.Bottom=480:rArea.Right=640
 
MainSurf.Lock rArea,ddsd, DDLOCK_WAIT,0
'We now have access to the memory. From now until the Unlock you are treading
'on thin ice......
 
'These are our two commands.
Colour=Mainsurf.GetLockedPixel(100,120)
Mainsurf.SetLockedPixel(100,120,Colour+10) 
 
MainSurf.Unlock rArea
 
End Sub

the rectangle rArea in this procedure, when you use it in the mainsurf.lock statement is just locking the part of the surface that is in the rectangle right ?

last of all,
at the end of mainsurf.lock what is the ,0 for?

thanks for all your help