int main(int argc, char** argv)
{
// The usual X overhead...
unsigned int width, height; // window size
unsigned int border_width = 4;
char* window_name = argv[0];
char* icon_name = "GCT";
Pixmap icon_pixmap;
XSizeHints* size_hints;
XWMHints* wm_hints;
XClassHint* class_hints;
XTextProperty windowName;
XTextProperty iconName;
XEvent report;
int window_size_ok = 1;
char* display_name = 0;
char* progname = argv[0];
Window win;
Display* display;
int screen_num;
// check allocation of hints
if (!(size_hints = XAllocSizeHints())
|| !(wm_hints = XAllocWMHints())
|| !(class_hints = XAllocClassHint()))
{
cerr << progname << " error: failure allocating memory" << endl;
exit(-1);
}
progname = argv[0];
// connect to X server
display = XOpenDisplay(display_name);
if (display == NULL)
{
cerr << progname << " error: can't connect to server " <<
XDisplayName(display_name) << endl;
exit(-1);
}
// get screen size from display structure macro
screen_num = DefaultScreen(display);
win = XCreateSimpleWindow(display, RootWindow(display, screen_num),
0, 0, DEF_WIDTH, DEF_HEIGHT, border_width, BlackPixel(display,
screen_num), WhitePixel(display, screen_num));
if (XStringListToTextProperty(&window_name, 1, &windowName) == 0)
{
cerr << progname
<< " error: structure allocation for windowName failed."
<< endl;
exit(-1);
}
if (XStringListToTextProperty(&icon_name, 1, &iconName) == 0)
{
cerr << progname
<< " error: structure allocation for iconName failed."
<< endl;
exit(-1);
}
size_hints->flags = PPosition | PSize | PMinSize;
size_hints->min_width = DEF_WIDTH;
size_hints->min_height = DEF_HEIGHT;
wm_hints->initial_state = NormalState;
wm_hints->input = True;
wm_hints->icon_pixmap = icon_pixmap;
wm_hints->flags = StateHint | IconPixmapHint | InputHint;
class_hints->res_name = progname;
class_hints->res_class = "chigcx";
XSetWMProperties(display, win, &windowName, &iconName, argv, argc,
size_hints, wm_hints, class_hints);
// Select desired event types
XSelectInput(display, win, ExposureMask | KeyPressMask
| ButtonPressMask);
// Highly intuitive way to state that we can process "delete window"
Atom delete_atom = XInternAtom(display, "WM_DELETE_WINDOW", false);
XSetWMProtocols(display, win, &delete_atom, 1);
XMapWindow(display, win);
cwin.open(display, win);
// Event loop
int draw_flag = 1;
while (true)
{
XNextEvent(display, &report);
switch ((int)report.type)
{
case Expose:
if (report.xexpose.count == 0)
{
if (window_size_ok)
{
if (draw_flag)
{
ccc_win_main();
draw_flag = 0;
}
else
cwin.repaint();
}
}
break;
case ConfigureNotify:
/*
window has been resized, change width and
height to send to draw_text and draw_graphics
in next Expose
*/
width = report.xconfigure.width;
height = report.xconfigure.height;
window_size_ok = (width >= size_hints->min_width)
&& (height >= size_hints->min_height);
break;
case ClientMessage:
if (report.xclient.data.l[0] == delete_atom)
{
cwin.close();
exit(0);
}
break;
case ButtonPress:
case KeyPress:
default:
break;
}
}
return 0;
}
int main()
{
return ccc_win_main();
}
