VST alle Hidden Rows wieder einblenden

[Sharky]

Zitat von richard_boderich:

... welche Bedeutung der Filterparameter im InterateSubtree Funktionsaufruf hat? ...

Ein Blick in den Sourcecode sagt:

Delphi-Quellcode:

function TBaseVirtualTree.IterateSubtree(Node: PVirtualNode; Callback: TVTGetNodeProc; Data: Pointer;
  Filter: TVirtualNodeStates = []; DoInit: Boolean = False; ChildNodesOnly: Boolean = False): PVirtualNode;

Delphi-Quellcode:

  TVirtualNodeState = (
    vsInitialized,       // Set after the node has been initialized.
    vsChecking,          // Node's check state is changing, avoid propagation.
    vsCutOrCopy,         // Node is selected as cut or copy and paste source.
    vsDisabled,          // Set if node is disabled.
    vsDeleting,          // Set when the node is about to be freed.
    vsExpanded,          // Set if the node is expanded.
    vsHasChildren,       // Indicates the presence of child nodes without actually setting them.
    vsVisible,           // Indicate whether the node is visible or not (independant of the expand states of its parents).
    vsSelected,          // Set if the node is in the current selection.
    vsInitialUserData,   // Set if (via AddChild or InsertNode) initial user data has been set which requires OnFreeNode.
    vsAllChildrenHidden, // Set if vsHasChildren is set and no child node has the vsVisible flag set.
    vsClearing,          // A node's children are being deleted. Don't register structure change event.
    vsMultiline,         // Node text is wrapped at the cell boundaries instead of being shorted.
    vsHeightMeasured,    // Node height has been determined and does not need a recalculation.
    vsToggling           // Set when a node is expanded/collapsed to prevent recursive calls.
  );
  TVirtualNodeStates = set of TVirtualNodeState;

Man kann also angeben auf welche Nodes die Callbackfunktion angewendet wird.