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DRAW() not working as expected
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To
13/06/2013 19:39:25
General information
Forum:
Visual FoxPro
Category:
Forms & Form designer
Environment versions
Visual FoxPro:
VFP 9 SP2
OS:
Windows 7
Network:
Windows 2003 Server
Database:
MS SQL Server
Application:
Desktop
Miscellaneous
Thread ID:
01576345
Message ID:
01576367
Views:
42
>>>>>Also, one thing you might do after your Draw() code is add this:
>>>
DECLARE INTEGER InvalidateRect  IN WIN32API INTEGER hwnd, INTEGER ignore1, INTEGER ignore2
>>>InvalidateRect(thisForm.hwnd, 0, 0)  && Just repaint foreground items
>>>*InvalidateRect(thisForm.hwnd, 0, 1)  && Also repaint the background coloring
>>>>>
>>>>>That will force the window to repaint itself at the Windows OS level, and may help it "go away".
>>>>
>>>>The Themes = .F. had no effect.
>>>>But InvalidateRect() does work perfectly, I don't even need to call THISFORM.Draw().
>>>>So I created a method THISFORM.Redraw() and put the API call in there.
>>>>Thank you!
>>>
>>>
>>>You're welcome. I updated the note above about the ignore1 and ignore2 values. The ignore2 parameter is actually "redrawBackground?"
>>
>>PMFJI, but I was wondering if the above code (using InvalidateRect) would work for a following case:
>>I have a form that processes many items (actually printing report for each item). So I wanted to show the ID of the item being processed in a textbox on the form. I have code:
>>
>>thisform.Draw
>>DOEVENTS
>>
>>in the DO WHILE loop where the items are being processed. It never actually showed the items (at least I never could see them). But I left the code there and since the customers didn't complain, I forgot about it. If I replace my thisform.Draw with the above API function call, do you think it will work showing the items being processed? And if yes, would it make sense to call the
>>
>>DECLARE INTEGER InvalidateRect  IN WIN32API INTEGER ...
>>
>>only once at the top of the procedure and then only call Invalidate() after every record ID is set in the textbox on the form?
>>Thank you.
>
>How do you update the textbox value? Does it use control source or you set the VALUE property in code?

I set the VALUE property in code; as the DO WHILE loops.
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