Command
QisLib_GetImage

QisLib_GetImage

Function:
	int QisLib_GetWindow(CQisWindow* Window);

Inputs:
	Window: Address of buffer to retrieve window extents.

Return:
	success: 0
	failure: one of the following values:

Errors:
	-1: Input argument is invalid (null).
	-2: File open in progress, operation not permitted.

Description:
	- Retreives the extents of the current window.
	- The extents will be in database units (DBU) or user units(UU) based on the
	QisLib_SetVectorUnit setting. Default setting is user units.
	- The current window extents may be different from the ones set by QisLib_SetWindow
	because QisLib adjusts and grows the window extents to the same aspect ratio of the
	image size (QisLib_SetImageSize) when QisLib_SetWindow is called. If
	QisLib_SetExactWindow is used, the extents returned by QisLib_GetWindow are
	identical to the ones set.