# Variables

GSDisplayServer variables

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GSTheme variables

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Notification sent when a theme has just become active.
The notification is posted by the -activate method.
This is primarily for internal use by AppKit controls which need to readjust how they are displayed when a new theme is in use.
Notification sent when a theme has just become inactive.
The notification is posted by the -deactivate method.
This is primarily for use by subclasses of GSTheme which need to perform additional cleanup when the theme stops being used.
Notification sent when a theme is about to become active.
The notification is posted by the -activate method.
This is primarily for use by subclasses of GSTheme which need to perform additional setup before the theme starts being used by the AppKit controls.
Notification sent when a theme is about to become inactive.
The notification is posted by the -deactivate method.
This allows code to make preparatory changes before the current theme is deactivated.
GSTheme types

This enumeration provides constants for informing drawing methods what state a control is in (and consequently how the display element being drawn should be presented). NB. GSThemeNormalState must be 0 and GSThemeSelectedState must be the last state, in order to allow code to iterate through all the states.
A control in its normal state
A control which is highlighted
A control which is selected This defines how the values in a tile array should be used when drawing a rectangle. Mostly this just effects the center, middle image of the rectangle.
FillStyleMatrix is provided for the use of theme editors wishing to display the tile.
CM image is not drawn
CM image is scaled to fit
CM image is tiled from bottom left
CM image is tiled from the center
a matrix of nine separated images
GSFusedSilica types

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GSFusedSilica constants

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