Name 

Description 

 

procedure FileChanged(FolderPIDL: IItemIdList; FilePIDL: IItemIdList); 

This method is called by the ShellLink instance if the currently selected item has changed. 

 

function getShellLink: TJamShellLink; 

Getter method for the ShellLink property. 

 

function GoUp: Boolean; 

This method indicates that the callee should go up one level and display the contents of the current folder's parent folder. 

 

procedure PathChanged(FolderPIDL: IItemIdList); 

This method is called by the ShellLink instance if the currently displayed folder has changed. 

 

procedure Refresh(pRefreshLevel: TRefreshLevel; pItemIdList: IItemIdList = nil); 

This method indicates that the control should perform a refresh of its contents. 

 

procedure SelectAll; 

This method indicates that the callee should select all item it currently displays. 

 

procedure setShellLink(aValue: TJamShellLink); 

Setter method for the ShellLink property. 

 

Name 

Description 

 

procedure Invalidate; override; 

Invalidates the control.  

 

procedure LoadFromStream(const pStream: TStream; const pExtension: String); 

Allows using a stream to show a file's preview.  

 

class function PreviewHandlerOnSystem(const pPreviewHandlerGuid: TGuid): Boolean; 

Checks, if the passed GUID is registered.  

 

class procedure PrintPreviewHandler; 

Prints a list of installed PreviewHandlers to the Debug Log.  

 

procedure Refresh(pRefreshLevel: TRefreshLevel; pItemIdList: IItemIdList = nil); 

This method indicates that the control should perform a refresh of its contents. 

 

procedure Resize; override; 

Respond to control resize 

 

procedure ScrollTo(pCharPos: integer); 

Scrolls to the passed character position.  

 

function SelectString(const pString: string; const pOptions: TSelectionOptions): integer; 

Only supported in the TextPreviewHandler, where each occurrence of the given string is highlighted and the first match focussed.  

 

procedure UnselectAll; 

Removes any highlighting.