indexing
	description: "Basic windows routines to draw controls like owner-draw-buttons."
	legal: "See notice at end of class."
	status: "See notice at end of class."
	date: "$Date: 2006-03-22 23:29:03 -0800 (Wed, 22 Mar 2006) $"
	revision: "$Revision: 57641 $"

class interface
	WEL_DRAWING_ROUTINES

create 
	default_create
			-- Process instances of classes with no creation clause.
			-- (Default: do nothing.)
			-- (from ANY)

feature -- Access

	dt_bottom: INTEGER_32 is 8
			-- Declared in Windows as DT_BOTTOM
			-- (from WEL_DT_CONSTANTS)

	dt_calcrect: INTEGER_32 is 1024
			-- Declared in Windows as DT_CALCRECT
			-- (from WEL_DT_CONSTANTS)

	dt_center: INTEGER_32 is 1
			-- Declared in Windows as DT_CENTER
			-- (from WEL_DT_CONSTANTS)

	dt_expandtabs: INTEGER_32 is 64
			-- Declared in Windows as DT_EXPANDTABS
			-- (from WEL_DT_CONSTANTS)

	dt_externalleading: INTEGER_32 is 512
			-- Declared in Windows as DT_EXTERNALLEADING
			-- (from WEL_DT_CONSTANTS)

	dt_hideprefix: INTEGER_32 is 1048576
			-- Declared in Windows as DT_HIDEPREFIX
			-- (from WEL_DT_CONSTANTS)

	dt_internal: INTEGER_32 is 4096
			-- Declared in Windows as DT_INTERNAL
			-- (from WEL_DT_CONSTANTS)

	dt_left: INTEGER_32 is 0
			-- Declared in Windows as DT_LEFT
			-- (from WEL_DT_CONSTANTS)

	dt_noclip: INTEGER_32 is 256
			-- Declared in Windows as DT_NOCLIP
			-- (from WEL_DT_CONSTANTS)

	dt_noprefix: INTEGER_32 is 2048
			-- Declared in Windows as DT_NOPREFIX
			-- (from WEL_DT_CONSTANTS)

	dt_right: INTEGER_32 is 2
			-- Declared in Windows as DT_RIGHT
			-- (from WEL_DT_CONSTANTS)

	dt_singleline: INTEGER_32 is 32
			-- Declared in Windows as DT_SINGLELINE
			-- (from WEL_DT_CONSTANTS)

	dt_tabstop: INTEGER_32 is 128
			-- Declared in Windows as DT_TABSTOP
			-- (from WEL_DT_CONSTANTS)

	dt_top: INTEGER_32 is 0
			-- Declared in Windows as DT_TOP
			-- (from WEL_DT_CONSTANTS)

	dt_vcenter: INTEGER_32 is 4
			-- Declared in Windows as DT_VCENTER
			-- (from WEL_DT_CONSTANTS)

	dt_word_ellipsis: INTEGER_32 is 262144
			-- Declared in Windows as DT_WORD_ELLIPSIS
			-- (from WEL_DT_CONSTANTS)

	dt_wordbreak: INTEGER_32 is 16
			-- Declared in Windows as DT_WORDBREAK
			-- (from WEL_DT_CONSTANTS)

	generating_type: STRING_8
			-- Name of current object's generating type
			-- (type of which it is a direct instance)
			-- (from ANY)

	generator: STRING_8
			-- Name of current object's generating class
			-- (base class of the type of which it is a direct instance)
			-- (from ANY)
	
feature -- Comparison

	frozen deep_equal (some: ANY; other: like arg #1): BOOLEAN
			-- Are `some' and `other' either both void
			-- or attached to isomorphic object structures?
			-- (from ANY)
		ensure -- from ANY
			shallow_implies_deep: standard_equal (some, other) implies Result
			both_or_none_void: (some = Void) implies (Result = (other = Void))
			same_type: (Result and (some /= Void)) implies some.same_type (other)
			symmetric: Result implies deep_equal (other, some)

	frozen equal (some: ANY; other: like arg #1): BOOLEAN
			-- Are `some' and `other' either both void or attached
			-- to objects considered equal?
			-- (from ANY)
		ensure -- from ANY
			definition: Result = (some = Void and other = Void) or else ((some /= Void and other /= Void) and then some.is_equal (other))

	is_equal (other: like Current): BOOLEAN
			-- Is `other' attached to an object considered
			-- equal to current object?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			symmetric: Result implies other.is_equal (Current)
			consistent: standard_is_equal (other) implies Result

	frozen standard_equal (some: ANY; other: like arg #1): BOOLEAN
			-- Are `some' and `other' either both void or attached to
			-- field-by-field identical objects of the same type?
			-- Always uses default object comparison criterion.
			-- (from ANY)
		ensure -- from ANY
			definition: Result = (some = Void and other = Void) or else ((some /= Void and other /= Void) and then some.standard_is_equal (other))

	frozen standard_is_equal (other: like Current): BOOLEAN
			-- Is `other' attached to an object of the same type
			-- as current object, and field-by-field identical to it?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			same_type: Result implies same_type (other)
			symmetric: Result implies other.standard_is_equal (Current)
	
feature -- Status report

	conforms_to (other: ANY): BOOLEAN
			-- Does type of current object conform to type
			-- of `other' (as per Eiffel: The Language, chapter 13)?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void

	same_type (other: ANY): BOOLEAN
			-- Is type of current object identical to type of `other'?
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			definition: Result = (conforms_to (other) and other.conforms_to (Current))
	
feature -- Duplication

	copy (other: like Current)
			-- Update current object using fields of object attached
			-- to `other', so as to yield equal objects.
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
			type_identity: same_type (other)
		ensure -- from ANY
			is_equal: is_equal (other)

	frozen deep_copy (other: like Current)
			-- Effect equivalent to that of:
			--		copy (`other' . deep_twin)
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
		ensure -- from ANY
			deep_equal: deep_equal (Current, other)

	frozen deep_twin: like Current
			-- New object structure recursively duplicated from Current.
			-- (from ANY)
		ensure -- from ANY
			deep_equal: deep_equal (Current, Result)

	frozen standard_copy (other: like Current)
			-- Copy every field of `other' onto corresponding field
			-- of current object.
			-- (from ANY)
		require -- from ANY
			other_not_void: other /= Void
			type_identity: same_type (other)
		ensure -- from ANY
			is_standard_equal: standard_is_equal (other)

	frozen standard_twin: like Current
			-- New object field-by-field identical to `other'.
			-- Always uses default copying semantics.
			-- (from ANY)
		ensure -- from ANY
			standard_twin_not_void: Result /= Void
			equal: standard_equal (Result, Current)

	frozen twin: like Current
			-- New object equal to `Current'
			-- twin calls copy; to change copying/twining semantics, redefine copy.
			-- (from ANY)
		ensure -- from ANY
			twin_not_void: Result /= Void
			is_equal: Result.is_equal (Current)
	
feature -- Basic operations

	frozen default: like Current
			-- Default value of object's type
			-- (from ANY)

	frozen default_pointer: POINTER
			-- Default value of type `POINTER'
			-- (Avoid the need to write `p'.default for
			-- some `p' of type `POINTER'.)
			-- (from ANY)

	default_rescue
			-- Process exception for routines with no Rescue clause.
			-- (Default: do nothing.)
			-- (from ANY)

	frozen do_nothing
			-- Execute a null action.
			-- (from ANY)

	draw_edge (dc: WEL_DC; rect: WEL_RECT; type, border: INTEGER_32)
			-- Draw a edge corresponding to the given options.
			-- See WEL_DRAWING_ROUTINES_CONSTANTS for `type' and
			-- `border'.
		require
			rect_not_void: rect /= Void
			dc_not_void: dc /= Void
			dc_exists: dc.exists

	draw_focus_rect (dc: WEL_DC; rect: WEL_RECT)
			-- Draw a focus line in the given rect.
		require
			rect_not_void: rect /= Void
			dc_not_void: dc /= Void
			dc_exists: dc.exists

	draw_insensitive_bitmap (dc: WEL_DC; bitmap: WEL_BITMAP; x, y: INTEGER_32)
			-- Draw the given bitmap converted to look insensitive
		require
			bitmap_not_void: bitmap /= Void
			bitmap_exists: bitmap.exists
			dc_not_void: dc /= Void
			dc_exists: dc.exists

	draw_insensitive_text (dc: WEL_DC; txt: STRING_GENERAL; x, y: INTEGER_32)
			-- Draw the given text with the insensitive
		require
			txt_not_void: txt /= Void
			dc_not_void: dc /= Void
			dc_exists: dc.exists
	
feature -- Output

	io: STD_FILES
			-- Handle to standard file setup
			-- (from ANY)

	out: STRING_8
			-- New string containing terse printable representation
			-- of current object
			-- Was declared in ANY as synonym of tagged_out.
			-- (from ANY)

	print (some: ANY)
			-- Write terse external representation of `some'
			-- on standard output.
			-- (from ANY)

	frozen tagged_out: STRING_8
			-- New string containing terse printable representation
			-- of current object
			-- Was declared in ANY as synonym of out.
			-- (from ANY)
	
feature -- Platform

	operating_environment: OPERATING_ENVIRONMENT
			-- Objects available from the operating system
			-- (from ANY)
	
invariant
		-- from ANY
	reflexive_equality: standard_is_equal (Current)
	reflexive_conformance: conforms_to (Current)

indexing
	copyright: "Copyright (c) 1984-2006, Eiffel Software and others"
	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
	source: "[
		Eiffel Software
		356 Storke Road, Goleta, CA 93117 USA
		Telephone 805-685-1006, Fax 805-685-6869
		Website http://www.eiffel.com
		Customer support http://support.eiffel.com
	]"

end -- class WEL_DRAWING_ROUTINES