Re: Fwd: [gsl-dev] replace the .bmp splashscreen

[eric.bachard]

Hi Malte,

Malte Timmermann a écrit :
I would have thought you simply need to set the background from the underlying 
system window to transparent before showing it, and
everything should work automatically then?

Thanks for the hint :-)

In fact, after some researchs in introwin.hxx, oudev.hxx, window.h 
window.hxx and all *win parents , I found nothing who works directly 
(this is probably my fault though).

The only closest solution I found does consist in use 
EnableEraseBackground( aBool ), but so far, this method is implemented 
in salobj.cxx or syschild.cxx , so a (hackish imho) solution would 
consist in - if I'm not too wrong - call GetSystemData() and set the 
right value using  mpWindowImpl-mpSysObj->IsEraseBackgroundEnabled() to 
the right value in the Ctor, and reinitialize it in the Dtor. Or 
something similar with syschildwindow ..  (please be gentle if I'm plain 
wrong with such idea ;-)  )


But the VCL people might correct me if I am wrong...


Yes, waiting for magic Philipp opinion  :)

From my side, I'd finaly prefer the clipping solution suggested by 
Thorsten, and that I mentioned in a previous mail

Last but not least (for Mathias), and on Mac OS X, the most simple way 
to use a native solution, is to use an NSTask :

pro : separated and independant thread, perfect for what we want to achieve
cons : we'll probably have to create a fu.. dedicated .nib (partly a 
closed binary), and commit it on the repository

For other Unixes, Kendy solution looks ok for me, but I have no idea yet 
for the Windows nor the (Open)Solaris ports.


Regards,
Eric Bachard

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