Command
QisLib_SetTextMode

QisLib_SetTextMode

Function:
	int QisLib_SetTextMode(int OnOff);

Inputs:
	On/Off: _QIS_ON (On) or _QIS_OFF (Off)

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

Errors:
	-1: QisLib has not been initialized.

Description:
	- Turn text on/off. On indicates that text are drawn or outputted. Off indicates that
	text are not drawn or outputted. This applies to function calls such as
	QisLib_Redraw for drawing or QisLib_GetDataVector for outputting vector data.
	- Default is on.

References:
	QisLib_SetTextScale