Command
QisLib_SetDrawFilteredAreas

QisLib_SetDrawFilteredAreas

Function:
	int QisLib_SetDrawFilteredAreas(int Options);

Inputs:
	Options: _QISDF_ON (On) or _QISDF_OFF(Off) or _QISDF_QUAD or _QISDF_CROSS

Return:
	0 (always)

Errors: -

Description:
	- Controls how filtered areas are drawn.
	- An area is filtered if its size in pixels is smaller than the size specified by the
	QisLib_SetDisplayFilterSize command. Areas that are smaller than the display filter
	size are drawn as a colored area.
	- Rectangular areas are divided into the 4 quadrants/areas and 2 crossing areas along
	the vertical and horizontal center line of the rectangular area.
	- Set this command to Off (_QISDF_OFF) if all areas smaller than the display filter
	are to be left empty without drawing anything.
	- Set it to Quad (_QISDF_QUAD) if only the 4 quadrants are to be drawn as a colored
	area, the 2 crossing areas are left empty.
	- Set it to Cross (_QISDF_CROSS) if only the 2 crossing areas are to be drawn as a
	colored area, the 4 quadrants are left empty.
	- If On (_QISDF_ON), filtered areas are drawn as colored boxes. This is the default
	behavior.