StyleManager

Qualified name: delphivcl.StyleManager

class StyleManager

Bases: Object

Handles styles-related operations. Use TStyleManager to:

Register and unregister style classes. Set the active style. Load styles from files or resources. Retrieve styles and their descriptors. Replace and retrieve the style engine.

Methods

CheckSysClassName	Embarcadero Technologies does not currently have any additional information.
HandleMessage	Handles a message from a control.
Initialize	Initializes data about styles and style engines.
IsCustomStyleAvailable	Embarcadero Technologies does not currently have any additional information.
IsSystemStyleDefault	Embarcadero Technologies does not currently have any additional information.
IsValidStyle	Check if a Vcl Style file is valid
LoadDesigningStyle	Embarcadero Technologies does not currently have any additional information.
LoadDesigningStyles	Embarcadero Technologies does not currently have any additional information.
LoadFromFile	Loads a VCL style from a file
LoadFromResource	Loads a style from the specified resource.
Notification	Notifies the style engine of an event that occured.
RegisterStyle	Registers the instance of a style specified by the Style parameter.
RegisterStyleClass	Registers a style class with extension, description, and resource type.
RemoveDesigningStyle	Embarcadero Technologies does not currently have any additional information.
ResetActiveDesigningStyle
ResetDesigningStyles	Embarcadero Technologies does not currently have any additional information.
SetDesigningStyle	Embarcadero Technologies does not currently have any additional information.
SetStyle	Sets the active style by name, instance, or handle.
TryLoadFromResource	Loads a style from a resource without raising an exception.
TrySetDesigningStyle	Embarcadero Technologies does not currently have any additional information.
TrySetStyle	Sets the style specified by name as the active style, without raising an exception.
UnInitialize	Uninitializes data about styles and style engines.
UnRegisterStyle	Embarcadero Technologies does not currently have any additional information.
UnRegisterStyleClass	Unregisters a style class specified by the StyleClass parameter.
UnRegisterStyleEngine	Unregisters the style engine specified by the AEngineClass parameter.

Attributes

ActiveStyle	Returns the current style.
ClassName	Returns the TObject.ClassName
DesignerStyle	CustomStyleServices:
DesignerStyleName	str:
Style	CustomStyleServices:
StyleDescriptor	StyleManager.TStyleClassDescriptor:
StyleNames	Provides access to the VCL style names.

ActiveStyle

Returns the current style.

CheckSysClassName(AClassName: str) → bool

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DesignerStyle

CustomStyleServices:

DesignerStyleName

str:

HandleMessage(Control: WinControl, Message: Message, DefWndProc: Callable[[Message], None]) → bool

Handles a message from a control. HandleMessage sends the message received from a control to the style engine.

Parameter

Meaning

Control

The component that passes the message.

Message

The message that is passed to the engine.

DefWndProc

The default window procedure to be called for the message.

Initialize()

Initializes data about styles and style engines.

Note: This function is reserved for internal use only. Do not call it directly.

IsCustomStyleAvailable(AControl: Control) → bool

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IsSystemStyleDefault(AControl: Control) → bool

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IsValidStyle()

Check if a Vcl Style file is valid

LoadDesigningStyle(FileName: str) → StyleManager.TStyleServicesHandle

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LoadDesigningStyles(FileNames: tuple) → None

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LoadFromFile()

Loads a VCL style from a file

LoadFromResource(Instance: int, ResourceName: str) → StyleManager.TStyleServicesHandle

Loads a style from the specified resource. Note that LoadFromResource does not automatically switch to the loaded style. To do that, call the SetStyle method.

Parameter

Meaning

Instance

The instance handle of the loaded resource.

ResourceName

The string associated with the resource.

ResType

A string that identifies the type of resource. Loads a style from the specified resource. Note that LoadFromResource does not automatically switch to the loaded style. To do that, call the SetStyle method.

Parameter

Meaning

Instance

The instance handle of the loaded resource.

ResourceName

The string associated with the resource.

ResType

A string that identifies the type of resource.

Notification(Operation: CustomStyleEngine.TStyleEngineNotification, Data: Pointer) → None

Notifies the style engine of an event that occured.

Parameter

Meaning

Operation

The action that is performed.

Data

The data on which the operation is executed.

RegisterStyle(Style: CustomStyleServices) → None

Registers the instance of a style specified by the Style parameter.

RegisterStyleClass(Extension: str, Description: str, ResourceType: str, StyleClass: CustomStyleServicesClass) → None

Registers a style class with extension, description, and resource type.

Parameter

Meaning

Extension

A string that specifies the extension used with the style files.

Description

A string that specifies a description of the style.

ResourceType

A string associated with the resource type.

StyleClass

Specifies the style class to be registered. Registers a style class with extension, description, and resource type.

Parameter

Meaning

Extension

A string that specifies the extension used with the style files.

Description

A string that specifies a description of the style.

ResourceType

A string associated with the resource type.

StyleClass

Specifies the style class to be registered.

RemoveDesigningStyle(Name: str) → None

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ResetActiveDesigningStyle()

ResetDesigningStyles()

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SetDesigningStyle(Name: str) → None

Embarcadero Technologies does not currently have any additional information. Embarcadero Technologies does not currently have any additional information.

SetStyle(Name: str) → None

Sets the active style by name, instance, or handle.

Parameter

Meaning

Name

The name of the style to be set as the active style.

Style

A style instance to be set as the active style.

Handle

The handle of the style to be set as the active style, as returned by the LoadFromFile or LoadFromResource method. Sets the active style by name, instance, or handle.

Parameter

Meaning

Name

The name of the style to be set as the active style.

Style

A style instance to be set as the active style.

Handle

The handle of the style to be set as the active style, as returned by the LoadFromFile or LoadFromResource method. Sets the active style by name, instance, or handle.

Parameter

Meaning

Name

The name of the style to be set as the active style.

Style

A style instance to be set as the active style.

Handle

The handle of the style to be set as the active style, as returned by the LoadFromFile or LoadFromResource method.

Style

CustomStyleServices:

StyleDescriptor

StyleManager.TStyleClassDescriptor:

StyleNames

Provides access to the VCL style names.

TryLoadFromResource(Instance: int, ResourceName: str, ResourceType: PWideChar, Handle: StyleManager.TStyleServicesHandle) → bool

Loads a style from a resource without raising an exception. TryLoadFromResource returns True if the style was successfully loaded, or False otherwise.

Parameter

Meaning

Instance

The instance handle of the loaded resource.

ResourceName

The string associated with the resource.

ResType

A string that identifies the type of resource.

Handle

The handle of the loaded style.

TrySetDesigningStyle(Name: str, ShowErrorDialog: bool) → bool

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TrySetStyle(Name: str, ShowErrorDialog: bool) → bool

Sets the style specified by name as the active style, without raising an exception. TrySetStyle returns True if the style was successfully set as the active style, and False otherwise.

Parameter

Meaning

Name

A string that specifies the name of the style to be set as active.

ShowErrorDialog

Specifies whether an error dialog box is shown if the style cannot be set as the active style.

UnInitialize()

Uninitializes data about styles and style engines.

Note: This function is reserved for internal use only. Do not call it directly.

UnRegisterStyle(Style: CustomStyleServices) → None

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UnRegisterStyleClass(StyleClass: CustomStyleServicesClass) → None

Unregisters a style class specified by the StyleClass parameter.

UnRegisterStyleEngine(AEngineClass: CustomStyleEngineClass) → None

Unregisters the style engine specified by the AEngineClass parameter.