TreeView.isBlankAtPos

Determine whether the point (@x, @y) in @tree_view is blank, that is no cell content nor an expander arrow is drawn at the location. If so, the location can be considered as the background. You might wish to take special action on clicks on the background, such as clearing a current selection, having a custom context menu or starting rubber banding.

The @x and @y coordinate that are provided must be relative to bin_window coordinates. Widget-relative coordinates must be converted using gtk_tree_view_convert_widget_to_bin_window_coords().

For converting widget coordinates (eg. the ones you get from GtkWidget::query-tooltip), please see gtk_tree_view_convert_widget_to_bin_window_coords().

The @path, @column, @cell_x and @cell_y arguments will be filled in likewise as for gtk_tree_view_get_path_at_pos(). Please see gtk_tree_view_get_path_at_pos() for more information.

class TreeView
bool
isBlankAtPos
(
int x
,
int y
,,,
out int cellX
,
out int cellY
)

Parameters

x int

The x position to be identified (relative to bin_window)

y int

The y position to be identified (relative to bin_window)

path TreePath

A pointer to a #GtkTreePath pointer to be filled in, or %NULL

column TreeViewColumn

A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL

cellX int

A pointer where the X coordinate relative to the cell can be placed, or %NULL

cellY int

A pointer where the Y coordinate relative to the cell can be placed, or %NULL

Return Value

Type: bool

%TRUE if the area at the given coordinates is blank, %FALSE otherwise.

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