Hi, Greg -

I assume you are asking about making multiple selections in a column object that utilizes either the Drop-Down DataWindow (DDDW) or Drop-Down ListBox (DDLB) edit styles.

The DDDW & DDLB edit styles provide a mechanism whereby each possible data value (an ID number, for example) is visually mapped to a display value (such as a name). Since a column DataWindow object represents a single data value, When a single selection is made, the corresponding data value is placed in the row/column in the data buffer.

My question to you: How should multiple selections in the (multiple names, for example) presentation be represented in a single data value (ID)? You're wanting to force multiple data values into a container that can hold only one value. You'd also have to somehow be able to parse or decode the single data value back into multiple selections.

Regards, John

Hi Greg;

   This is very easy to do and I have needed to do this type of multi-value processing in my PB Apps for decades.

   How I approach the the problem is to use a CommandButton beside the multi-value column. When the App User clicks the "..." CB, I open (with Parm) a Response Window that uses a "Tabular" or "Grid" style DataWindow and in the Message object pass in a Structure with array elements.

   In the response window's DW Control, I support multi-row selects. Then when complete and the user closes the Multi-row selection window, I copy the selected DWO datum to the passed-in structure and then perform a CloseWithReturn command. The receiving (in calling Window) DWO on the "Button Clicked" event that called the response window then introspects the returned structure and processes the multi-value array data as your business users require. This design of course could then update multiple DWO columns within various DWO's as required and not just a single parent column like a DDDW.

  Food for thought.  ;-)

Regards ... Chris