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From: ichida@pt1.ncl.omron.co.jp (ICHIDA.T)
Newsgroups: comp.windows.open-look
Subject: Re: Keyboard Input and olwm (XLib)
Message-ID: <ICHIDA.91Mar13100852@majesty.pt1.ncl.omron.co.jp>
Date: 13 Mar 91 01:08:52 GMT
References: <1991Mar11.142805.16777@mack.uit.no>
Sender: news@frf.omron.co.jp
Reply-To: ichida@pt1.ncl.omron.co.jp
Organization: OMRON Co., Kyoto, 617 Japan.
Lines: 64
In-reply-to: frodek@forit.forut.no's message of 11 Mar 91 23:28:05 JST


In article <1991Mar11.142805.16777@mack.uit.no> frodek@forit.forut.no (Frode Kileng) writes:

 > When a key is pushed the window manager beeps so it seems that 
 > the windowmanager receives the input but will not send it to my
 > application. 

I faced same problem. When  program needs key-input,  program must set
window manager hints defined in ICCCM.

I   created  following    example     program. Please  watch    marked
lines.(specified as '<-').

<<< test.c >>>
#include <stdio.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>

void
main()
{
	Display		*display;
	Window		window;
	GC		gc;
	int		screen;
	XEvent		event;
	XWMHints	wm_hints;			<- 

	display = XOpenDisplay(NULL);
	screen = XDefaultScreen(display);
	window = XCreateSimpleWindow(display, RootWindow(display, screen),
		100, 100, 500, 500, 5, 
		BlackPixel(display, screen), WhitePixel(display, screen));
	XSelectInput(display, window, KeyPressMask | ExposureMask);
	gc = DefaultGC(display, screen);

	wm_hints.flags = InputHint;			<-
	wm_hints.input = True;				<-
	XSetWMHints(display, window, &wm_hints);	<-

	XMapWindow(display, window);

	for (;;) {
		XNextEvent(display, &event);
		switch (event.type) {
		case KeyPress:
			puts("key pressed");
			break;		
		case Expose:
			XDrawRectangle(display, window, gc,
				10, 10, 480, 480);
			break;
		default:
			puts("other event");
			break;
		}
	}
}


---
OMRON Corporation
Toshihiko Ichida.
Mail: ichida@pt1.ncl.omron.co.jp