TCustomVirtualStringTree.RenderOLEData Method

Renders pending OLE data.

function RenderOLEData(const FormatEtcIn: TFormatEtc; out Medium: TStgMedium; ForClipboard: Boolean): HResult; override;

RenderOLData is called by TVTDataObject.GetData when a consumer of clipboard data actually requests the data. The base tree view only renders the native tree format, which is a chunk based stream of node data. The format to be rendered is specified in FormatEtcIn.cfFormat and is one of the formats which are returned from GetNativeClipboardFormats. 

Descendants may override RenderOLEData in order to render other formats like HTML text. In TBaseVirtualTreeview this method calls the OnRenderOLEData event for all formats, except CF_VIRTUALTREE.

TCustomVirtualStringTree Class