how use CreateDIBSection() with a pointer?

[Joaquim_5]

with CreateDIBSection() we create an array of DIB's pixels .. but it's a copy and not a pointer :(
when i change 1 pixel or draw a rectangle, i must re-create the DIB's and then draw the result.

Private bmpPtr() As Long
ReDim bmpPtr(ImageWidth * ImageHeight - 1)
  hBitmap = CreateDIBSection(hdc, bmpInfoHeader, BI_RGB, ByVal bmpPtr, 0, 0)

but when i do:

bmpPtr(PosY * Width + PosX) = color

the value is changed on 'bmpPtr' but not on Bitmap or HDC :(