OpenEuphoria

Re: Win32Lib 0.53

• Posted by Derek Parnell <derekp at solace.com.au> Sep 27, 2000
• 426 views

Hi Renzo,

>
>Lots of weird things happen with V0.53!!!

You have mentioned two (2) things that are weird. Can I have a list of the
other things that you have found weird in v0.53 (unless 2=lots) ?

>setbitmap(,) = error code 460 ??? (something with a handle)
>
>With Win32lib 0.52 it works fine

Actually, this didn't work in v0.52 either. V0.52 just ignored the error. At
least we now let you know when it happens. I do not know what is causing the
error though. The message is displayed when creating a combo-type control
and win32lib can't get a hWnd for the combo's edit area. This hWnd is needed
to detect key strokes, mouse movements etc ... in the edit area. So, when
this problem happens, it means that the TAB key, for example, doesn't move
onto the next control.

Here is the code in Win32lib...

        struct = allocate_struct( SIZEOF_POINT )
        store( struct, ptX, 1 )
        store( struct, ptY, 1 )
        hWnd = c_func( ChildWindowFromPointEx, { hWnd, struct, 4 } )


and here is the suggested code from Microsoft's documentation...


and yes, I've also tried with just "hWnd = c_func( ChildWindowFromPoint,
 hWnd, struct} )", with no luck. Sometimes this function works, other times
it doesn't.

>is Setfont() still eating up GDI resources ???

Yes. setFont() grabs a chunk of RAM every time its called, and doesn't
release it until the application ends. It could be a bit more clever, and
only hold onto the RAM for each distinct combination of setFont() parameters
actually used. When a call comes to setFont() that has the exact same
parameters as an earlier one, it could reuse the RAM structure created
earlier. I'm not actually sure why its being tracked, but I assume it must
need to be. I'll play around with ideas unless somebody says otherwise.


-----
cheers,
Derek Parnell