[XFree86] Not using Default Visual

[Pascual Castellon Gadea]

Hi!

I am trying to create an X Window not using the default Visual. To do 
such thing, I select my prefered Visual with the
XGetVisualInfo function.

Then I want to use the �visual� and �depth� fields in the structure, to 
open a Window. But unfortunatelly, the X-Server
always gives me a BadMatch Error. I also tried creating a Colormap 
before the Window and giving it at creation time
through the XSetAttributes structure.

Here is the code that shows me the error message:

int main()

{
  Display               *display;
  Window                window,
                        parent;
  Colormap              colormap;
  XVisualInfo           *xvinfo;
  XVisualInfo           xvinfo_template;
  unsigned long         mask;
  long                  xvinfo_mask;
  int                   nitems_return;
  XSetWindowAttributes  attributes;
  
  screen = XDefaultScreen(display);
  parent = XRootWindow (display,screen);

  xvinfo_template.screen = screen;
  xvinfo_template.depth  = 8;
  xvinfo_template.class  = PseudoColor;
  xvinfo_mask = (VisualScreenMask|VisualDepthMask|VisualClassMask);
  xvinfo = 
XGetVisualInfo(display,xvinfo_mask,&xvinfo_template,&nitems_return);
  if (!nitems_return) {
     fprintf(stderr,"Can not find PseudoColor Visual");
  }

  colormap = XCreateColormap(display,parent,xvinfo[0].visual,AllocAll);

  mask = (CWBackingStore | CWEventMask | CWWinGravity | CWBackPixel | 
CWBackingPixel | CWColormap );
  attributes.backing_store    = Always;                     
  attributes.event_mask       = ExposureMask | StructureNotifyMask;       
  attributes.win_gravity      = NorthWestGravity;           
  attributes.background_pixel = XBlackPixel (display,screen);
  attributes.backing_pixel    = XBlackPixel (display,screen);
  attributes.colormap         = colormap;

  window = XCreateWindow (display,parent,x,y,width,height,borderw,
                          xvinfo[0].depth,InputOutput,xvinfo[0].visual,
                          mask,&attributes);
....
}
Can anybody help me with this?

Thanks in advance

--
Pascual Castellon
Programming Department
mailto: [EMAIL PROTECTED]
http://www.cadt.com
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