VirtualStringTree is a Delphi component, VirtualTreeview descendant designed to make it easy to show string data.
Questions tagged [tvirtualstringtree]
148 questions
4
votes
1 answer
Color VirtualStringTree rows with hidden nodes
I'm currently using this code in the OnBeforeCellPaint event of my tree:
if Node.Index mod 2 = 0 then
begin
TargetCanvas.Brush.Color := clBlack;
TargetCanvas.FillRect(CellRect);
end
else
begin
TargetCanvas.Brush.Color := clPurple;
…
humfred
- 65
- 3
4
votes
1 answer
VitrtualStringTree. How to Drag'n'Drop to ROOT level?
A have a tree:
ROOT - VirtualStringTree(You don't see it, TVirtualStringTree.RootNode)
My Root Node 1
My Root Node 2
Second node 1
Second node 2
Second node 3
My Root Node 3
I can Drag'n'Drop "My Root Node 3" to any visible node, but I can't…
Alexandr
- 338
- 1
- 4
- 16
4
votes
1 answer
Delphi VirtualStringTree OnMouseEnter and OnMouseLeave
Hello please is there any VirtualStringTree version that contains these 2 Mouse Events :
OnMouseEnter and OnMouseLeave ?
Sdean
- 245
- 2
- 5
- 12
4
votes
2 answers
Edit a root node celltext in VirtualTreeView
I would like to change the cell text of an existing virtual (root) node. I can change the data but I have to refresh the whole TreeView so the GetText get's fired again. Is there an easier way or a possible way to refresh only 1 root node and not…
Ben
- 3,380
- 2
- 44
- 98
4
votes
1 answer
Incorrectly drawn themed checkbox in TVirtualStringTree
Checkbox handling in version 5.0.0 of VirtualTrees.pas appears broken when toThemeAware is enabled. Nodes that are csUncheckedNormal are drawn as checked + hot.
To correctly paint an unchecked, themed checkbox using DrawElement, the Details record…
DaveS_Lifeway
- 375
- 3
- 9
3
votes
1 answer
How to hide a specific column in a virtual string tree?
How can I hide specific columns in my virtual string tree?
I've tried this code:
Header.Columns.Items[3].Width := -1;
It displays the column, but not the header caption. Why?
Tony
- 251
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3
votes
1 answer
Virtual String Tree 4.8.7 HeaderDblClick Event without function?
I just tried to use the event OnHeaderDblClick of the VirtualStringTree Component (Version 4.8.7) Is it possible, that this event is not working?
Or is there some option that I need to set to get it to work?
Michael Küller
- 3,982
- 4
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- 42
3
votes
1 answer
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 VST that are not duplicates of first…
Dylan
- 1,183
- 4
- 13
- 26
3
votes
2 answers
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:
For the data structure, I am using svTree by Linas,…
Shambhala
- 1,159
- 3
- 13
- 31
3
votes
2 answers
How to modify the focus-box color in TVirtualStringTree?
I need to modify the focus-box's border color of TVirtualStringTree,
just like this pic:
Leo
- 1,947
- 2
- 20
- 37
3
votes
0 answers
How to have both Tooltip and Hint hint modes?
In Windows, if a column is too narrow to show full text, a tooltip appears inline and can show you the missing text:
It's important to note that hint window is inline with the text being displayed (i.e. it's not "below" the node).
This would be the…
Ian Boyd
- 246,734
- 253
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- 1,219
3
votes
1 answer
Delphi VirtualStringTree OnGetHint
I want to show hint when cell text is already fully shown.
so, on form's OnCreate
procedure TForm1.FormCreate(Sender: TObject);
begin
VirtualStringTree1.HintMode := hmHint;
VirtualStringTree1.ShowHint := True;
end;
and OnGetHint
procedure…
Outdoor
- 35
- 1
- 7
3
votes
1 answer
TVirtualStringTree - How to enable drag when clicked on any area of selected row?
I have a VST with toFullRowSelect (with a few columns). I would like to enable drag & drop on the nodes.
The problem is that you can start draging the node/s only if you click direcly on the node caption. if the click was made on the row selection…
zig
- 4,524
- 1
- 24
- 68
3
votes
1 answer
TVirtualStringTree - How to draw on header columns without using OwnerDraw?
I would like to draw on the TVirtualStringTree header columns but I have a problem. I need the tree columns to use it's "default draw" and add my own graphics on it.
If I use hoOwnerDraw with Header.Options and use OnHeaderDraw, I need to completely…
zig
- 4,524
- 1
- 24
- 68
3
votes
1 answer
Icons in TVirtualStringTree painted with exception
This is very small project to reproduce the problem (VirtualStringTree version 6.5):
type
TForm1 = class(TForm)
vstTest: TVirtualStringTree;
Images: TImageList;
procedure FormCreate(Sender: TObject);
procedure…
Alex Egorov
- 907
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- 26