Retrieves the Mouse Cursor Y coordinate of the current form when the data value is dropped.
The numeric value of the Mouse Cursor Y coordinate in the unit of measurement used by the current form.
When a drop occurs outside of the form's client area, such as the form title, the Y coordinate will be returned as a negative value.
This function is not supported for mobile devices.
The Online and Rich Client Samples projects (program HG41 and RHG41)