int ObjectsDeleteAll	(	long	chart_id,
		string	prefix,
		int	window = EMPTY,
		int	type = EMPTY
	)

Removes all objects from the specified chart, specified chart subwindow, of the specified type

Parameters

chart_id	Chart identifier
prefix	Prefix in object names. All objects whose names start with this set of characters will be removed from chart
window	Number of the chart window. Must be greater or equal to -1 (-1 mean all subwindows, 0 means the main chart window) and less than WindowsTotal().
type	Type of the object. The value can be one of the following values: OBJ_VLINE Vertical Line OBJ_HLINE Horizontal Line OBJ_TREND Trend Line OBJ_TRENDBYANGLE Trend Line By Angle OBJ_CYCLES Cycle Lines OBJ_CHANNEL Equidistant Channel OBJ_STDDEVCHANNEL Standard Deviation Channel OBJ_REGRESSION Linear Regression Channel OBJ_PITCHFORK Andrews’ Pitchfork OBJ_GANNLINE Gann Line OBJ_GANNFAN Gann Fan OBJ_GANNGRID Gann Grid OBJ_FIBO Fibonacci Retracement OBJ_FIBOTIMES Fibonacci Time Zones OBJ_FIBOFAN Fibonacci Fan OBJ_FIBOARC Fibonacci Arcs OBJ_FIBOCHANNEL Fibonacci Channel OBJ_EXPANSION Fibonacci Expansion OBJ_RECTANGLE Rectangle OBJ_TRIANGLE Triangle OBJ_ELLIPSE Ellipse OBJ_ARROW_THUMB_UP Thumbs Up OBJ_ARROW_THUMB_DOWN Thumbs Down OBJ_ARROW_UP Arrow Up OBJ_ARROW_DOWN Arrow Down OBJ_ARROW_STOP Stop Sign OBJ_ARROW_CHECK Check Sign OBJ_ARROW_LEFT_PRICE Left Price Label OBJ_ARROW_RIGHT_PRICE Right Price Label OBJ_ARROW_BUY Buy Sign OBJ_ARROW_SELL Sell Sign OBJ_ARROW Arrow OBJ_TEXT Text OBJ_LABEL Label OBJ_BUTTON Button OBJ_BITMAP Bitmap OBJ_BITMAP_LABEL Bitmap Label OBJ_EDIT Edit OBJ_EVENT The "Event" object corresponding to an event in the economic calendar OBJ_RECTANGLE_LABEL The "Rectangle label" object for creating and designing the custom graphical interface.

Returns

Returns the number of deleted objects. To read more about the error call GetLastError()