QPx_GetAreaScrollOffset

QPx_GetAreaScrollOffset(areaRef; areaRef; areaRef; areaRef; areaRef):error
	areaRef	Longint	QPix area reference
	hScroll	Longint	Horizontal scroll offset (pixels)
	vScroll	Longint	Vertical scroll offset (pixels)
	hMaxScroll	Longint	Max horz scroll offset (pixels)
	vMaxScroll	Longint	Max vert scroll offset (pixels)
	error	Longint	Error result

The QPix plug-in area is specified by areaRef. If areaRef is not a valid QPix plug-in area reference, qpx_paramErr is returned.

Parameters hScroll and vScroll receive the horizontal and vertical scroll offsets respectively.

Parameters hMaxScroll and vMaxScroll receive the maximum possible offsets for the horizontal and vertical scrollbars.

Example

   // Center image horizontally and vertically

C_LONGINT($error)
C_LONGINT($hScroll;$vScroll;$hMaxScroll;$vMaxScroll)

$error:=QPx_GetAreaScrollOffset (gQPixArea;$hScroll;$vScroll;$hMaxScroll;$vMaxScroll)

If ($error=qpx_noErr)
   
   $hScroll:=$hMaxScroll/2
   $vScroll:=$vMaxScroll/2
   
   $error:=QPx_SetAreaScrollOffset (gQPixArea;$hScroll;$vScroll)
   
End if 

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