[Iup-users] Suggestions (was: IUP compile error)

[Antonio Scuri]

> cairo_xlib_surface_create(XtDisplay(wid), XtWindow(wid), iupmot_visual, w,
h);

  Try using:

  XWindowAttributes wa;
  Window wnd;
  Display *dpy;
  Visual visual;

  dpy = (Display*)IupGetAttribute(ih, "XDISPLAY");
  wnd = (Window)IupGetAttribute(ih, "XWINDOW");
  XGetWindowAttributes(dpy, wnd, &wa);
  visual = wa.visual;

  You will need only X, no need for Xt.



> (2) There is something strange about IupUpdate in the Motif driver. 
> This function is actually empty in the driver (at the end of "motif.c").

  IupUpdate is fully working in IUP 3. But it depends on a function that is
not implemented in all Motif systems. When I release the final version of
2.6 I will try to find out which systems, and probably include its code from
IUP 3. It can be implemented as:

#ifndef IUP_MOTIF_NO_REDISPLAY
#include <Xm/Print.h>
#else
        /* XmUpdateDisplay will only flush exposure events, will not force
an exposure. */
#define XmRedisplayWidget XmUpdateDisplay  
#endif
  
void IupUpdate(Ihandle* ih)
{
  if (ih->handle)
    XmRedisplayWidget(ih->handle);
}

  But in IUP 3 will also update its children.


 
> I think this is not the best possible separation.  In my 
> case, for instance, I do not want to use libiupcontrols 
> because it requires me to link in libcd as well, nearly 
> doubling the size of my application.  

  Why don't you try using CD instead of Cairo? What features in Cairo do you
see as more interesting?
  (Not pushing you, just curious)



> It would be nice if I could still use IupCBox and IupSBox (I looked at the
code, 
> and it does not seem to make any use of CD at all, so I 
> believe these controls could easily be moved to libiup).
> Would it perhaps be an idea to put those controls that do not 
> need libcd into libiup?

  Yes I could do that. I guess it will be no harm. I'll let you know before
2.6 is released.

  BTW, in IUP 3 some of the additional controls that are implemented with CD
will be migrated to native elements and naturally moved to the main library.

  Thanks for the comments.

Best,
Scuri