Navigation keys in tree controls
Download as PPT, PDF0 likes178 views
The document summarizes navigation keys that can be used to control a tree control when it has focus. The down and up arrow keys move selection up and down one item. The right arrow opens branch nodes and moves to the first child, while the left arrow closes branches and selects the parent. The spacebar and asterisk keys toggle open and closed states of branch nodes. Page up and down move selection up and down one page. Control and shift allow for multiple non-contiguous and contiguous selections respectively when allowMultipleSelection is true.
Navigation keys in tree controls
- 1. Navigation Keys in Tree Control Hemakumar.S Open Source Developer
- 2. Tree Navigation Keys Tree control is not editable and has focus from clicking or tabbing, you use the following keys to control it: Down Arrow : Moves the selection down one. When the Tree control gets focus, use the Down arrow to move focus to the first node . Up Arrow: Moves the selection up one item.
- 3. Cont…. Right Arrow: Opens a selected branch node. If a branch is already open, moves to the first child node. Left Arrow: Closes a selected branch node. If a leaf node or a closed branch node is currently selected, selects the parent node. Spacebar or * (Asterisk on numeric keypad): Opens or closes a selected branch node (toggles the state).
- 4. Cont…. Page down: Moves the selection down one page. Page up: Moves the selection up one page. Control: If the allowMultipleSelection property is true, allows multiple noncontiguous selections. Shift: If the allowMultipleSelection property is true, allows multiple contiguous selections.