QMed_GetAreaScrollOffset

QMed_GetAreaScrollOffset(areaRef; hScroll; vScroll; hMaxScroll; vMaxScroll):error
	areaRef	Longint	QMedical area reference
	hScroll	Longint	Horizontal scroll offset (pixels)
	vScroll	Longint	Vertical scroll offset (pixels)
	hMaxScroll	Longint	Max horizontal scroll offset (pixels)
	vMaxScroll	Longint	Max vertical scroll offset (pixels)
	error	Longint	Error result

Returns the scroll offsets of a scrollable QMedical plug-in area.

The QMedical plug-in area is specified by areaRef. If areaRef is not a valid QMedical plug-in area reference, qmed_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)

$error:=QMed_GetAreaScrollOffset (gAreaRef;$hScroll;$vScroll;$hMaxScroll;$vMaxScroll)

If ($error=qmed_noErr)

  $hScroll:=$hMaxScroll/2
  $vScroll:=$vMaxScroll/2

  $error:=QMed_SetAreaScrollOffset (gAreaRef;$hScroll;$vScroll)

End if

Related commands

QMed_SetAreaScrollOffset

Changes the scroll offsets of a scrollable QMedical plug-in area