I have a simple form with a button and a list box.
When the button is pressed, it starts a process inserting items into a database.
I want each record to display in the list box like:
record 1 inserted
record 2 inserted
etc.
I assume I need a redraw.
Would you use dialog or control redraw?
I tried control redraw hWndForm HWND_FORM1_LIST1 but the dialog just went white and the whole thing was blinking.
dialog redraw seems to work better, but that seems the opposite of what I'd use... redrawing the entire dialog instead of one control
More than likely your application is doing some data intensive task and it is not allowing the controls to repaint. You should realize that WM_PAINT is a pretty low priority message in Windows. Having said that, you can periodically send an FF_Control_Redraw function call to your listbox and it should work.
BTW, Control Redraw and Dialog Redraw are DDT commands and *may* work with FireFly created controls.... or may not. I'd stick with the FireFly Functions or use WinAPI directly:
InvalidateRect HWND_FORM_LIST1, ByVal %Null, %TRUE
UpdateWindow HWND_FORM_LIST1
What about FF_DoEvents? I have good luck inserting that in compute intensive loops when I want some display updating to occur.
If you can handle some small delays try putting a SLEEP 100 (with more or less time depending) in your compute loop. You can also condition this to only happen every few times through the loop:
IF LoopCounter MOD 10 = 0 THEN
SLEEP 100
END IF
Some food for thought.