Difference between DLG_ADDSTRING and LB_ADDSTRING

[Lars_Jakobsen]

Hi all,
I am currently trying to develop a dialogthat has a listbox named IDC_VISIBLE in it and a button to add an item to the listbox. There are at least two methods of populating the listbox, however I amconfused by the difference in subsequent behaviour of the listboxwhen using either

lret = DLGSET(dlg, IDC_VISIBLE, Text, DLG_ADDSTRING)
or
iret= senddlgitemmessage(dlg%hwnd, IDC_VISIBLE_LB_ADDSTRING, 0, loc(Text)).

Both will add a string to my listbox, however when I subsequently try using

iret = senddlgitemmessage(dlg%hwnd, IDC_VISIBLE, LB_FINDSTRING, 0, loc(Text))

the differences begin. When using dlg_addstring the application cannot findText (return code -1) but if I am using LB_ADDSTRING it does find Text (return code index to Text).

For other reasons (mostly reuse of code) I would like to use DLG_ADDSTRING (as it updates the numitems used by dlgget(dlg, idSrc, NumSrc) used in another subroutine). I have searched forbut did not find any descriptions on the difference in behaviour when using dlg_addstring or lb_addstring (or dlgset as opposed to sendmessage)- can anybody tell me the difference or does anybody know where I can read about the difference?

Regards

Lars

[anthonyrichards]

Try using CALL DLGFLUSH (dlg [, flushall]) with flushall = .false. after your DLGSET. See the Help for DLGFLUSH.

[Lars_Jakobsen]

That worked - thank you.

Does this mean, that there should not be any difference in using dlgset(...,DLG_ADDSTRING) or sendmessage(...,LB_ADDSTRING)?

Along the line -I was wondering about when to use DLGMODELESS and when to use CreateDialogParamto create the dialog from a resource- I settled on the DLGMODELESS approach, but are there any guidelines?

Again - thank you for the help.

Lars

[anthonyrichards]

Personally, I always use DLGINIT (or DLGINITWITHRESOURCEHANDLE) to load a dialog and usually use DLGMODAL by changing the DLGMODELESS and deleting the message loop for a modeless dialog that a new default dialog application provides. I match the DLGINIT with a DLGUNINIT when the dialog exits. I have found this works fine.