1. RE: EuGrid Version 1.0.1
Phil Russell wrote:
> Hi All,
>
> I have just sent an upgraded version of my EuGrid grid control to Rob.
> This is just an interim release which fixes a couple of problems that
> people have reported:
Keep up the good work Phil!
I have noticed that sometimes when running a program with a EuGrid, some
other fonts in my system sometimes get messed up (they get bigger &
bolder). This generally happens to fonts in the menu bar and in the
address bar (where the filename is) in the desktop explorer. Problem
goes away by simply reopening the affected window. I have seen this
maybe once or twice before using win32lib programs without EuGrid, but
with EuGrid it seems to happen quite frequently -- generally when I'm
actually programming and running the program over & over to test things
out.
Anybody seen this?
Also, I had a problem the other day with it crashing in the EGW_OnSize
function. It was being called from EGW_OnGridEvent when the
"GridDraw[grid]" sequence had a length of 0.
I added an if statement to check the length in the OnGridEvent function:
if msg = WM_SIZE then
-- ignore minimize and maximize for child window
if wParam = SIZE_RESTORED then
-- Create new offscreen bitmap
-- Added IF statement:
if length(GridDraw[grid])> 0 then
EGW_OnSize( id, grid, lo_word(lParam), hi_word(lParam))
end if
end if
That seemed to take care of it, but I'm not sure that is the most
appropriate solution. ???
2. Re: RE: EuGrid Version 1.0.1
I think this is a win32lib bug.
18/09/2002 3:43:43 PM, Andy Serpa <renegade at earthling.net> wrote:
>
>I have noticed that sometimes when running a program with a EuGrid, some
>other fonts in my system sometimes get messed up (they get bigger &
>bolder). This generally happens to fonts in the menu bar and in the
>address bar (where the filename is) in the desktop explorer. Problem
>goes away by simply reopening the affected window. I have seen this
>maybe once or twice before using win32lib programs without EuGrid, but
>with EuGrid it seems to happen quite frequently -- generally when I'm
>actually programming and running the program over & over to test things
>out.
>
>Anybody seen this?
>
>
---------
Cheers,
Derek Parnell
3. RE: EuGrid Version 1.0.1
Hi Andy,
Thanks for taking a look - all feedback gratefully received!
>
> I have noticed that sometimes when running a program with a EuGrid, some
>
> other fonts in my system sometimes get messed up (they get bigger &
> bolder). This generally happens to fonts in the menu bar and in the
> address bar (where the filename is) in the desktop explorer. Problem
> goes away by simply reopening the affected window. I have seen this
> maybe once or twice before using win32lib programs without EuGrid, but
> with EuGrid it seems to happen quite frequently -- generally when I'm
> actually programming and running the program over & over to test things
> out.
>
> Anybody seen this?
>
I don't think that it is down to EuGrid as it does not allocate any font
resources internally. I gather that Derek P. thinks that this is a
win32lib issue. EuGrid *does* use a lot of other GDI resources so I
would be very interested if you get any problems with 'resource
leakage'.
>
> Also, I had a problem the other day with it crashing in the EGW_OnSize
> function. It was being called from EGW_OnGridEvent when the
> "GridDraw[grid]" sequence had a length of 0.
>
> I added an if statement to check the length in the OnGridEvent function:
>
> if msg = WM_SIZE then
> -- ignore minimize and maximize for child window
> if wParam = SIZE_RESTORED then
> -- Create new offscreen bitmap
>
> -- Added IF statement:
> if length(GridDraw[grid])> 0 then
> EGW_OnSize( id, grid, lo_word(lParam), hi_word(lParam))
> end if
> end if
>
>
> That seemed to take care of it, but I'm not sure that is the most
> appropriate solution. ???
>
A couple of people mentioned this and hopefully it is fixed in 1.0.1.
The problem seems to be that a window can occasionally get a WM_SIZE
message before it gets its first WM_DRAWITEM (which triggers the
populate of GridDraw). I have implemented a slightly different fix to
the one you suggest - seems to work on my PC but let me know if you get
any problems...
Regards,
Phil
