Sent to the delegate whenever the mouse button is clicked in the table view’s header column.
Original signature is '- (void)tableView:(NSTableView *)tableView mouseDownInHeaderOfTableColumn:(NSTableColumn *)tableColumn'
Available in Mac OS X v10.0 and later.

C# | Visual Basic | Visual C++ |
void TableViewMouseDownInHeaderOfTableColumn( NSTableView tableView, NSTableColumn tableColumn )
Sub TableViewMouseDownInHeaderOfTableColumn ( _ tableView As NSTableView, _ tableColumn As NSTableColumn _ )
void TableViewMouseDownInHeaderOfTableColumn( NSTableView^ tableView, NSTableColumn^ tableColumn )

- tableView (NSTableView)
- The table view that sent the message.
- tableColumn (NSTableColumn)
- The table column.

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)