virtualtreeview

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How not to add duplicate into TVirtualStringTree?

I have two VirtualStringTrees, first VST has been populated with data and I want to check the second VST and add nodes that are not already in the first VST. Or I want to add those nodes from second V[详细]

2023-04-05 08:39 分类：问答
Firemonkey version of VirtualTreeView

Does anyone happen to know if there is a Firemonkey version of the popular VirtualTreeView in preparation? Also, has anybody collected some experience开发者_运维知识库s with porting custom controls to[详细]

2023-04-04 22:31 分类：问答
How can I save and load my svTree data structure?

I am trying to implement a simple contact manager using the VirtualStringTree component. I have it set up to look like a list-view component with only three columns that will all contain text:[详细]

2023-04-04 03:05 分类：问答
VirtualStringTree - Multiline Nodes and centre text vertically

If a node in a 开发者_StackOverflow中文版VirtualStringTree is multiline (vsMultiline in Node.States) then how can i centre the text vertically for all columns (except the multiline column) in that nod[详细]

2023-03-27 02:46 分类：问答
VirtualStringTree updating data using cache system

Well, I\'m using VirtualStringTree to create kind of a process manager... I run into trouble because of updating the tree with a timer set to 1000ms (cpu usage is too high for my application retrievi[详细]

2023-03-17 17:55 分类：问答
How to refresh Vertical scrollbar in VirtualStringTree?

how to refresh the scrollbar of VirtualStringTree if each nodeheight 开发者_如何学Pythonwas changed into different Height. coz, the scroll are still in the same state causing other node cannot be view[详细]

2023-03-15 01:15 分类：问答
Access Violation when assigning string in InitNode event of TVirtualStringTree

The given code which works without any problems in Delphi 2007. However in Delphi 2009 I am getting an exception.[详细]

2023-03-11 18:27 分类：问答
How best to render an overlay icon on top of basic Delphi TVirtualTreeView node icon

I\'m converting a tree view from the standard TTreeView to use TVirtualStringTree. My final challenge is to implement a feature where I need to draw a \'pass/fail\' status indicator on top of the know[详细]

2023-03-10 00:40 分类：问答
InsertNode with UserData param in TVirtualStringTree

I need to insert some new nodes to TVirtualStringTree. I use the InsertNode method with a UserData param. But the tree can\'t show any data. How can I get the userdata on GetText/FreeNode event?[详细]

2023-03-07 03:43 分类：问答
EnumWindows and EnumChildWindows to keep my Treeview updated

I am trying to make a program similar to Winspector Spy. My problem is that I would like my Virtual Treeview to be updated at all times - that is, update it when a window is created, when a window is[详细]

2023-03-06 09:23 分类：问答