TCustomTreeView.GetHitTestInfoAt function

Declaration

function GetHitTestInfoAt(X: Integer; Y: Integer): THitTests

Arguments

Function result

Set of THitTest values for the node at the specified coordinates.

Description

GetHitTestInfoAt is a THitTests function used to gather hit test results for the coordinates specified in X and Y. The return value indicates the part(s) of a node on the tree view control beneath the given coordinates. The results are an empty set if none of the THitTest values apply to the specified position (Such as when X, Y is not within the client area for the control).

In the current implementation, the following THitTest enumeration values are used:

htOnItem

The position is over a node on the tree view control.

htOnIndent

The position is over the indent prior to a node.

htOnButton

The position is over an expand / collapse indicator for a tree node.

htOnStateIcon

The position is over the state icon for a tree node.

htOnIcon

The position is over the main icon for a tree node.

htOnLabel

The position is over the text displayed for a tree node.

htNowhere

The position is over a part of a node which does not qualify for the previous values.

The following THitTest values are not used in the current implementation: htAbove, htBelow, htOnRight, htToLeft, and htToRight.

See also

• GetNodeAtY
• TTreeNode
• THitTests
• THitTest