procedure BestFitColumns(BestFitMode: TBestFitMode = bfCells)
Description
The method allows you to automatically adjust the width of the columns.
As a rule, this method should be called in the event of the OnChange component.
You can specify the following values as a parameter:
bfCells - autosize width by cells contents.
bfBoth - autosize width by contents of cells and column titles.
bfHeader - autosize width by column headers.
Example
procedure Form1_TreeView1_OnChange (Sender: TObject);
begin
Form1.TreeView1.BestFitColumns(bfBoth);
end;