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MDisplayMapping Class Reference

class MDisplayMapping : public MDisplayMappingBase

Provides the Window Server client coordinate space mapping functions.

Inherits from

MDisplayMapping
- MDisplayMappingBase

Public Member Functions
void	GetDisplayExtentOfWindow (const RWindowBase &, TRect &)
void	GetMaximumSurfaceSize ( TSize &, TSize &)
void	GetMaximumWindowExtent ( TRect &)

Inherited Functions
	MDisplayMappingBase::MapCoordinates(TCoordinateSpace,const TRect &,TCoordinateSpace,TRect &)const

Public Member Enumerations
enum	anonymous { KUidDisplayMapping = 0x1028656B, ETypeId = KUidDisplayMapping }

Inherited Enumerations
	MDisplayMappingBase:@165

Member Functions Documentation

GetDisplayExtentOfWindow(const RWindowBase &, TRect &)

void	GetDisplayExtentOfWindow	(	const RWindowBase &	aWindow,
			TRect &	aExtent
		)	const [pure virtual]

Retrieves the extent of a window relative to the top-left corner of the display.

This will differ from the window's AbsPosition() if the current screen size mode is offset from the corner of the display, or if the user interface is being scaled on the display.

Parameters

const RWindowBase & aWindow	window in question
TRect & aExtent	extent to be filled in

GetMaximumSurfaceSize(TSize &, TSize &)

void	GetMaximumSurfaceSize	(	TSize &	aPixels,
			TSize &	aTwips
		)	const [pure virtual]

Returns the maximum useful size for a surface to be shown on the display at the current resolution, in both pixels and twips.

This may be larger than both the screen device SizeInPixels() and the size of the maximum window extent, if the user interface is being scaled by the display. In general, the value will be the native display resolution.

MDisplayControl CWsScreenDevice::SizeInPixels

Parameters

TSize & aPixels	pixels to be filled in
TSize & aTwips	twips to be filled in

GetMaximumWindowExtent(TRect &)

void

GetMaximumWindowExtent

(

TRect &

aExtent

)

const [pure virtual]

Retrieves the largest window extent that is visible at the current display resolution. This may be larger than the size reported by SizeInPixels(), and have a negative top-left position, for example.

MDisplayControl CWsScreenDevice::SizeInPixels

Parameters

TRect & aExtent

extent to be filled in

Member Enumerations Documentation

Enum anonymous

Enumerators

KUidDisplayMapping = 0x1028656B
ETypeId = KUidDisplayMapping