How can I modify a TreeView item's height?

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Question:

How can I modify a TreeView item's height?

Answer:

Simply send a message TVM_SETITEMHEIGHT to the treeview control. The first parameter (word parameter, aka 'wParm') specifies the new height of every item in the tree view, measured in pixels. Note these restrictions:

• this will affect all items in the treeview control
  
• heights less than 1 will be set to 1.
  
• if the height is not even and the tree-view control does not have the TVS_NONEVENHEIGHT style, this value will be rounded down to the nearest even value.
  
• if the height is -1, the control will revert to using its default item height.
  

	uses CommCtrl; procedure SetTreeViewItemHeight(aTreeView: TTreeView; iItemHeight: Word); begin { SetTreeViewItemHeight } aTreeView.Perform(TVM_SETITEMHEIGHT, iItemHeight, 0); end; { SetTreeViewItemHeight } procedure TForm1.Button1Click(Sender: TObject); begin { TForm1.Button1Click } SetTreeViewItemHeight(TreeView1, 30); end; { TForm1.Button1Click } //..

Comments:

2008-04-09, 04:19:08

anonymous

this tip is very usefull

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