-
Tracy Lamb
- PowerBuilder
- Saturday, 23 July 2022 11:21 PM UTC
Hi all,
In my main app I have a "Navigator". The user double-clicks on a window name to open it. One of the windows is "Status Tracking".
In some windows, the user can double-click on a particular dw row to open another window. If I double-click from say, the Lab Folder, the Lab Folder opens Status Tracking and sends in a PowerObjectParm consisting of several arrays. Status Tracking checks for a PowerObjectParm, and if it's not null it processes accordingly (basically automatic retrieve). If a PowerObjectParm is not passed in, Status Tracking should open in Query mode.
This is working fine when when I open Status Tracking from other windows. But, when I open Status Tracking from the navigator (ie, no PowerObjectParm sent in) I'm getting a Null Object Reference, line 23 of pfc_postopen event.
Here's how I open Status Tracking from the Lab Folder:
istr_parms.long_arg[1] = ll_salesorder istr_parms.long_arg[2] = ll_workorder istr_parms.string_arg[1] = "WO" OpenSheetWIthParm(lw_sheet, istr_parms, "w_md_status_tracking", w_benchtop_frame, 0, Layered!)
Here's the Status Tracking pfc_postopen event :
// Save parameters that may have been sent in if NOT IsNull(Message.PowerObjectParm) then istr_parms = Message.PowerobjectParm is_retrieval_type = istr_parms.string_arg[1] il_salesorder = istr_parms.long_arg[1] if UpperBound(istr_parms.long_arg) > 1 then il_workorder = istr_parms.long_arg[2] end if dw_1.Retrieve(il_salesorder) if is_retrieval_type ="WO" then rb_workorder.Checked = TRUE //Scroll to the workorder that was sent in // Find this workorder in the list... ls_find = string( il_workorder ) ll_ThisRow = dw_2.inv_find.of_find( "id", ls_find, 1, dw_2.RowCount() ) if ll_ThisRow > 0 then dw_2.ScrollToRow( ll_ThisRow ) dw_2.SelectRow( 0, False ) dw_2.SelectRow( ll_ThisRow, True ) end if end if end if
I'm getting a NULL Object Reference line 23 (is_retrieval_type) when I open Status Tracking from the Navigator. The Message.PowerObjectParm should be null as I opened the window without any parameters and this whole IF clause should be skipped. Maybe the Message.PowerObjectParm is not Null and is a hangover from previous calls? In the debugger, istr_parms isn't even the right structure. How can I check to see if the PowerObjectParm is of the class/type str_parms?
~~~Tracy
Find Questions by Tag
Helpful?
If a reply or comment is helpful for you, please don’t hesitate to click the Helpful button. This action is further confirmation of their invaluable contribution to the Appeon Community.