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1. Open the Profound UI Visual Designer, start with a new display file and name the record format SFLCTL1 .

   
   

2. Add an empty panel labeled Drag and Drop .

   
   

3. Add an exit button labeled Exit bound to an indicator named BTNEXIT.

   
   

4. Add two single column subfiles with output fields as shown below.
   

   
   

5. Set the id of the first subfile to Grid1 and the second subfile to Grid2.

   
   

6. Set the record format name of the first subfile ( Grid1 ) to SFLA and the second subfile ( Grid2 ) to SFLB .

   
   

7. Add an output field to each subfile  bound to FIELDA and FIELDB respectively. These fields are 20A .

   
   

8. Bind an indicator named SFLCLR to the clear subfile property of both subfiles. (The same indicator can be used with both subfiles.)

   
   

9. For both subfiles, set the properties as shown:
   

   Info
   The 'drop targets' property represents a comma delimited list. The drag and drop feature will not work as expected if any whitespace is entered into this property.

   
   

   
   

10. Select the SFTCTL1 record format and bind the following fields to the properties shown:
    

    
    

11. Save the display file as DRAGD and compile it to your library.

    
    

12. Compile the code below into your QRPGLESRC. A file is attached here to import into your library: DRAGR.RPGLE.

    Code Block
    linenumbers true collapse true
    H DFTACTGRP(*NO) * FDRAGD CF E WorkStn Handler('PROFOUNDUI(HANDLER)') F SFile(SFLA : RRNA) F SFILE(SFLB : RRNB) D RRNA S 5I 0 D RRNB S 5I 0 D ArrayA S 20A DIM(100) D CountA S 5I 0 D ArrayB S 20A DIM(100) D CountB S 5I 0 D RemoveItem PR D rm_ARRAY 20A DIM(100) D rm_Index 5I 0 CONST D InsertItem PR D in_ARRAY 20A DIM(100) D in_Index 5I 0 CONST D in_Value 20A CONST D in_Count 5I 0 D ClearEmpty PR D cl_ARRAY 20A DIM(100) D cl_Count 5I 0 D Item S 20A /FREE ArrayA(1) = 'Red'; ArrayA(2) = 'Green'; ArrayA(3) = 'Mouse'; ArrayA(4) = 'Dog'; ArrayA(5) = 'Kangaroo'; ArrayA(6) = 'Ant'; ArrayA(7) = 'Purple'; ArrayA(8) = 'White'; ArrayA(9) = 'Cat'; ArrayA(10) = 'Camel'; ArrayA(11) = 'Horse'; CountA = 11; ArrayB(1) = 'Orange'; ArrayB(2) = 'Gound Hog'; ArrayB(3) = 'Yellow'; ArrayB(4) = 'Black'; ArrayB(5) = 'Hog'; CountB = 5; Dou BTNEXIT = *On; // Clear the subfiles. SFLCLR= *On; Write SFLCTL1; SFLCLR= *Off; // Load subfile A with Array A FOR RRNA = 1 TO CountA; FIELDA = ArrayA(RRNA); WRITE SFLA; ENDFOR; // Load subfile B with Array B FOR RRNB = 1 TO CountB; FIELDB = ArrayB(RRNB); WRITE SFLB; ENDFOR; // Display the subfile. ExFmt SFLCTL1; If BTNEXIT = *Off; If DragFromId = 'Grid1' And DragToId = 'Grid1'; Chain DragFromRN SFLA; RemoveItem(ArrayA : DragFromRN); InsertItem(ArrayA : DragToRN : FIELDA : CountA); ENDIF; If DragFromId = 'Grid1' And DragToId = 'Grid2'; Chain DragFromRN SFLA; RemoveItem(ArrayA : DragFromRN); InsertItem(ArrayB : DragToRN : FIELDA : CountB); ENDIF; If DragFromId = 'Grid2' And DragToId = 'Grid2'; Chain DragFromRN SFLB; RemoveItem(ArrayB : DragFromRN); InsertItem(ArrayB : DragToRN : FIELDB : CountB); ENDIF; If DragFromId = 'Grid2' And DragToId = 'Grid1'; Chain DragFromRN SFLB; RemoveItem(ArrayB : DragFromRN); InsertItem(ArrayA : DragToRN : FIELDB : CountA); ENDIF; ClearEmpty(ArrayA : CountA); ClearEmpty(ArrayB : CountB); EndIf; // end if exit = off. EndDo; *InLr = *On; Return; /END-FREE P RemoveItem B D RemoveItem PI D rm_ARRAY 20A DIM(100) D rm_Index 5I 0 CONST /FREE rm_ARRAY(rm_Index) = 'EMPTYEMPTY'; return; /END-FREE P RemoveItem E P InsertItem B D InsertItem PI D in_ARRAY 20A DIM(100) D in_Index 5I 0 CONST D in_Value 20A CONST D in_Count 5I 0 D I s 5I 0 D Index s like(in_Index) /FREE Index = in_Index + 1; * Shift each element from the end of the array forward, starting from * the end and working backward to the destination index spot. for i = in_Count downto Index; in_ARRAY(i+1) = in_ARRAY(i); ENDFOR; * The destination spot gets the parameter value. in_ARRAY(Index) = in_Value; * Increment the size of the array (how many elements are filled). in_Count+=1; return; /END-FREE P InsertItem E P ClearEmpty B D ClearEmpty PI D cl_ARRAY 20A DIM(100) D cl_Count 5I 0 D lookIndex s 5I 0 D i s 5I 0 /FREE lookIndex = %lookup('EMPTYEMPTY':cl_ARRAY); if lookIndex > 0; for i = lookIndex to cl_Count; cl_ARRAY(i) = cl_ARRAY(i+1); ENDFOR; cl_Count-=1; ENDIF; return; /END-FREE P ClearEmpty E

    The important piece of code is shown below.

    Code Block
    collapse true
    If BTNEXIT = *Off; If DragFromId = 'Grid1' And DragToId = 'Grid1'; Chain DragFromRN SFLA; RemoveItem(ArrayA : DragFromRN); InsertItem(ArrayA : DragToRN : FIELDA : CountA); ENDIF; If DragFromId = 'Grid1' And DragToId = 'Grid2'; Chain DragFromRN SFLA; RemoveItem(ArrayA : DragFromRN); InsertItem(ArrayB : DragToRN : FIELDA : CountB); ENDIF; If DragFromId = 'Grid2' And DragToId = 'Grid2'; Chain DragFromRN SFLB; RemoveItem(ArrayB : DragFromRN); InsertItem(ArrayB : DragToRN : FIELDB : CountB); ENDIF; If DragFromId = 'Grid2' And DragToId = 'Grid1'; Chain DragFromRN SFLB; RemoveItem(ArrayB : DragFromRN); InsertItem(ArrayA : DragToRN : FIELDB : CountA); ENDIF;

    Using the data taken from DragFromId and DragToId, we can determine the subfile that the item was taken from, and where it was dropped. Then using the RemoveItem() and InsertItem() sub procedures included in the code, we can then remove the item from the original subfile and insert it into the correct position on the new subfile.

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