用于拖动分割器的鼠标光标的Win32资源在哪里？

I am building a custom win32 control/widget and would like to change the cursor to a horizontal "splitter" symbol when hovering over a particular vertical line in the control. IE: I want to drag this vertical line (splitter bar) left and right (WEST and EAST).I am building a custom win32 control/widget and