TThemeServices class

In unit Themes

Implements theme services for supported platforms.

Declaration

pascal

TThemeServices = class(TObject)

Inheritance

TThemeServices
TObject

Description

TThemeServices is a small foot print class to provide the user with pure Windows XP theme related abilities like painting elements and text, or retrieving theme element details.

Properties

`DottedBrush`	public	Bitmap Handle for the Dotted Pattern Brush used to draw theme elements.
`ThemesAvailable`	public	Indicates if theme data is available.
`ThemesEnabled`	public	Indicates if themes are enabled for the platform.

Methods

`InitThemes`	protected	Always returns False.
`UnloadThemeData`	protected	An empty implementation in TThemeServices.
`UseThemes`	protected	Always returns False.
`ThemedControlsEnabled`	protected	Always returns False.
`InternalColorToRGB`	protected	Converts the numeric color value to color reference.
`InternalDrawParentBackground`	protected	An empty implementation in TThemeServices.
`Create`	public	Constructor for the class instance.
`Destroy`	public	Destructor for the class instance.
`IntfDoOnThemeChange`	public	Signals the OnThemeChange event handler (when assigned).
`IsDarkTheme`	public
`IsDisabled`	public	Indicates if the theme element value in Details is in a disabled state.
`IsPushed`	public	Indicates if the theme element value in Details is in a pushed state.
`IsHot`	public	Indicates if the theme element value in Details is in a hot or hovered state.
`IsChecked`	public	Indicates if the theme element value in Details is in a checked state.
`IsMixed`	public	Indicates if the theme element value in Details has more than one theming state.
`GetElementDetails`	public	Fills members in the theme element details.
`GetDetailSize`	public	Deprecated. Use GetDetailSizeForPPI instead.
`GetDetailSizeForWindow`	public	Gets the dimensions for a theme element on the control with the specified window handle.
`GetDetailSizeForPPI`	public	Gets the dimensions for a theme element scaled to the specified Pixels per Inch (PPI).
`GetDetailRegion`	public	Gets the handle to the region for a theme element.
`GetStockImage`	public	Always returns False.
`GetOption`	public	Returns 1 if the theme option is used for the platform, or 0 when not used.
`GetTextExtent`	public	Calculates the bounding rectangle for the text or caption in a theme element.
`ColorToRGB`	public	Converts a TColor value to the Cardinal color constant needed for a theme element detail.
`ContentRect`	public	Adjusts the bounding rectangle for a theme element to contain the content area only.
`DrawEdge`	public	Default drawing for the edges on a themed element.
`DrawElement`	public	Draws a theme element using the specified theme element details.
`DrawIcon`	public	Draws the icon for a theme element.
`DrawParentBackground`	public	Draws a parent background using the specified window handle and device context.
`DrawText`	public	Draws the text for a themed control.
`HasTransparentParts`	public	Always returns True.
`PaintBorder`	public	Default painting method for the borders for a control.
`UpdateThemes`	public	Reloads theme elements and details when UseThemes is True.

Events

OnThemeChange public Event handler signalled when the current window theme has been changed.

Inherited

From TObject (40)

AfterConstruction BeforeDestruction CheckDisposed ClassInfo ClassName ClassNameIs ClassParent ClassType CleanupInstance DefaultHandler DefaultHandlerStr Dispatch DispatchStr Disposed DisposeOf Equals FieldAddress Free FreeInstance GetDisposed GetHashCode GetInterface GetInterfaceByStr GetInterfaceEntry GetInterfaceEntryByStr GetInterfaceTable GetInterfaceWeak GetLastCastErrorInfo InheritsFrom InitInstance InstanceSize MethodAddress MethodName newinstance QualifiedClassName SafeCallException StringMessageTable SystemHasExtendedRTTI ToString UnitName

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.