PrintKey 2000

I ran across this freeware which I am pretty fascinated by two of their features. They have one where you can point to anything and it saves the picture of whatever you pointed to, such as a toolbar only. The other feature is that the user can draw a rectangle anywhere on the screen and it takes a picture of that too. I am interest in know how both are done.

Thank You

I am thinking it uses:

Code:

Private Declare Function StretchBlt Lib "gdi32" Alias "StretchBlt" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC As Long, ByVal xSrc As Long, ByVal ySrc As Long, ByVal nSrcWidth As Long, ByVal nSrcHeight As Long, ByVal dwRop As Long) As Long