Richview trvstyle liststyle list style (bullet number)

RichView TRVStyle ListStyle  A list of the style （ Bullet number ）

      One 、ListStyle
      This is a TRVStyle One of the key attributes of : Paragraph list style ( Bullets and numbers ) Set .
     TObject->TPersistent->TCollectionItem->TCustomRVInfo

property ListStyles : TRVListInfos;

    Bullet / Number ( list ) The implementation of is as follows :
    1.TRVStyle There is a list style collection ( This attribute ). Each list style contains a list level collection ( Level attribute ). The list level defines most of the list properties .
    2. A list tag is a special type of item . They are inserted with special functions . They are always inserted at the beginning of the paragraph . They have the following characteristics :

    Two 、 Related properties

A list of attributes
    ListNo              List style index in the list style collection ( That is, in this attribute );
    LevelNo            List level ;
    StartFrom          The starting value of the list counter , If UseStartFrom=True;
    UseStartFrom   If True, The list counter value of this tag is determined by StartFrom Definition . If False, Then continue numbering .

Layout properties
    FirstIndent              The first line indentation
    LeftIndent              Left
    MarkerIndent          Label indent
    MarkerAlignment   Label alignment

Outline tag properties
    ListType              Tag type
    Font                    typeface
    Picture                picture
    ImageList            Image list    
    ImageIndex          Image list order
    FormatString        Format string
    FormatStringW   Format string

Numbered list attribute
    StartFrom                The starting number of the numbered list
    Options                  List outline type
    2rvloContinuous    Reserved properties
    2rvloLevelReset    Renumber
    2rvloLegalStyle      Numbering

Outline preview
    OneLevelPreview    Used by applications to define preview thumbnails for this outline style

    3、 ... and 、 Method
AllNumbered       Determine whether they are numbered , If the outline is numbered , return True
HasNumbering     Determine whether there is a numbered outline , If there is a numbered outline , return True

    Four 、ApplyListStyle Method
    TCustomRichViewEdit.ApplyListStyle: Apply a list style to the selected paragraph ( Bullet or number )

procedure ApplyListStyle(AListNo, AListLevel, AStartFrom: Integer; AUseStartFrom, ARecursive: Boolean);   // This method adds / Change the list tag .

Parameters

       AListNo          Define the style of the list . This is an index in the list style collection (Style.ListStyles)
       AListLevel      List level . This is an index in the list level collection (Style.ListStyles[AListNo]. levels).
                              If AListLevel=-1, The level of existing tags does not change , The level of the new tag is 0.
       AStartFrom    The value of the tagged list counter .
                              If AUseStartFrom=True, And this is a numbered list , be AStartFrom Define the value of the list counter for this tag . If AUseStartFrom=False, Numbering will continue . For bulleted lists , These parameters will be ignored .
       ARecursive      Reserved for future use . Set to False.

    Four 、TRVListLevel.Options Parameter setting outline mode
type
  TRVListLevelOption =  (rvloContinuous, rvloLevelReset, rvloLegalStyleNumbering);
  TRVListLevelOptions = set of TRVListLevelOption;

If rvloLevelReset stay Options in , The number will look like this :

If rvloLevelReset stay Options Excluded , The number will look like this :

If rvloLegalStyleNumbering stay Options in , Then all higher-level Roman and alpha numbers will be changed to decimal , As shown below :

otherwise :

 

rvloContinuous Reserved for future use .
Default :
[rvloContinuous, rvloLevelReset]

    5、 ... and 、TRVListLevel.MarkerIndent Layout properties
    FirstIndent、LeftIndent、MarkerIndent、MarkerAlignment Set the effect ：