[maemo-developers] how to make a splash screen with Qt

[From: Kimmo Hämäläinen]

On Mon, 2010-02-08 at 09:50 +0100, ext ibrahim wrote:
> hello there ;
> 
> I was wondering how to make a splash screen for my application using Qt, 
> I found this link : 
> http://wiki.maemo.org/Qt4_Hildon#QSplashScreen_not_fully_compatible_with_Hildon-Desktop 
> 
> telling that it is not compitable with maemo, So, it tried many 
> workarounds (like creating a fullscreen window above my main window, and 
> then hiding it after a while, But it blinks when it hide and the main 
> view of my application is shown minimized when spalsh screen disappears.
> Also tried to make my  main view window's central widget to be a splash 
> screen widget and after a while i replace it with the original  central 
> widget of the main view But it failed too)
> 
> So, I wonder if you have any other way/Maemo API to allow a splash 
> screen to be properly shown .

You need to set a window property that tells HD to skip the transitions:

static void set_no_transitions (Display *dpy, Window w)
{
  Atom no_trans;
  int one = 1;
  no_trans = XInternAtom (dpy, "_HILDON_WM_ACTION_NO_TRANSITIONS", False);
  XChangeProperty (dpy, w, no_trans,
                   XA_CARDINAL, 32, PropModeReplace,
                   (unsigned char *)&one, 1);
}

--Kimmo

> 
> thank you in advance;
> 
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