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Length: 1424 (0x590)
Types: TextFile
Names: »visual.frag«
└─⟦8648bda34⟧ Bits:30007244 EUUGD5_II: X11R5
└─⟦2ca9b63e1⟧ »./contrib-1/contrib-1.00«
└─⟦a8392fb20⟧
└─⟦this⟧ »contrib/examples/OReilly/Vol1/basicwin/getvis/visual.frag«
#include <X11/Xlib.h>
#include <X11/Xutil.h>
visual()
{
Display *display;
Colormap colormap;
Window window;
int screen;
.
.
.
XVisualInfo vTemplate; /* template of the visual we want */
XVisualInfo *visualList; /* list of XVisualInfo structs that match */
int visualsMatched; /* number of visuals that match */
.
.
.
/*
* Set up the XVisualInfo template so that it returns
* a list of all the visuals of depth 8 defined on the
* current screen by the X server
*/
vTemplate.screen = screen;
vTemplate.depth = 8;
.XX "XGetVisualInfo, example using"
visualList = XGetVisualInfo (display, VisualScreenMask |
VisualDepthMask, &vTemplate, &visualsMatched);
if ( visualsMatched == 0 )
fatalError ("No matching visuals\en");
/*
* Create a colormap for a window using the first of the visuals
* in the list ov XVisualInfo structs returned by XGetVisualInfo.
*/
.XX "XCreateColormap, example using"
colormap = XCreateColormap (display, RootWindow(display, screen),
visualList[0].visual, AllocNone);
.
.
.
window = XCreateWindow (display, RootWindow(display, screen),
x, y, width, height, border_width, vTemplate.depth,
InputOutput, visualList[0].visual, mask, &attributes);
XSetWindowColormap(display, window, colormap);
.XX "XSetWindowColormap, example using"
/* All done with visual information. Free it. */
XFree(visualList);
.XX "XFree, example using"
.
.
.
} /* end routine */
.Pe