Command
QisLib_SetLayersFill

Purpose

Function:
	int QisLib_SetLayersFill(const char* OptionString);

Inputs:
	OptionString: A string with the following format [Backus-Naur form]
	< OptionString > : < LayerString > { "," < LayerString > }
	< LayerString > : < Layer > { ":" < DataType > } "-" < Pattern >
	< Layer > : A valid layer number.
	< DataType > : A valid datatype number.
	< Pattern > : A number from colfill.pat file specifying fill pattern.

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

Errors:
	1: 'DisplayHandle' parameter of QisLib_InitLib is NULL, operation not permitted.
	-1: QisLib has not been initialized.
	-2: The specified input is invalid (null).
	-3: One of more arguments is invalid.
	-4: Error occurred while allocating specified color.
	-5: Error occurred while saving color to the map file.
	-6: File open in progress, operation not permitted.

Description:
	- Sets the fill pattern for the specified layer:datatype combinations.
	- On Unix/Linux, this function does nothing if the 'DisplayHandle' parameter was set
	to NULL in QisLib_InitLib.
	- To get a list of patterns, view the colfill.pat file.
	- If the datatype is absent, the pattern is set for all datatypes for that layer.
	- By default, the fill pattern color is specified by colfill.pat file. This can be
	overridden by QisLib_SetLayersFillColor call.

Example:
	QisLib_SetLayersFill("1-83,2:3-85");
	// Sets the fill pattern for all datatypes corresponding to layer
	// 1 as pattern 83 from colfill.pat
	// and sets the fill pattern for layer 2 datatype 3 as pattern
	// 85 from colfill.pat.