server.c

演示X协议通讯的小程序

#include  <X11/Xlib.h>

#include "/usr/X11R6/include/Xm/Xm.h"
#include "/usr/X11R6/include/Xm/Form.h"
#include "/usr/X11R6/include/Xm/Label.h"
#include "/usr/X11R6/include/Xm/PushB.h"


#define GCM_IDENTIFIER  "_GENERIC_CLIPBOARD_MANAGER"
				
static char label[]="press here to quit...";
static void cb_quit(Widget w,XtPointer client_data,XtPointer call_data);


Display *display;
Widget topLevel,quit_button,form;

void test()
{
	Atom atom;

	display = XtDisplay(form);

	atom = XInternAtom(display, GCM_IDENTIFIER, False);
	
	printf("atom is %d.\n", atom);
	if(XGetSelectionOwner(display, atom))
		XtError("clipmanager already running.\n");
	
	printf("form id is %d.\n", XtWindow(form));
	printf("quit_button id is %d.\n", XtWindow(quit_button));
	XSetSelectionOwner(display, atom, XtWindow(form),  CurrentTime);
	
}

void ClientMsgProc(Widget w , XtPointer closure, XEvent *ev, Boolean * cont)
{
	printf("Enter NonMaskProc.\n");
	if(w != form)
	{
		printf("is not widget form, exit...\n");
		exit(-1);
	}
	
	switch(ev->type)
	{
		case  ClientMessage:
			printf("get msg.\n");
			break;
		default:
			break;
	}
}


void EnterWndProc(Widget w, XtPointer closure, XEvent *ev, Boolean *cont)
{
	printf("EnterWndProc called.\n");
}	



void main(int argc,char **argv)
{
	XtAppContext app;
	XmString xmlabel;

	topLevel = XtAppInitialize(&app,"XMquit",NULL,0,&argc,argv,NULL,NULL,0);
	form = XtCreateManagedWidget("Form",xmFormWidgetClass,topLevel,NULL,0); /*16*/
	xmlabel = XmStringCreateLtoR(label,XmSTRING_DEFAULT_CHARSET);
	quit_button = XtVaCreateManagedWidget("Exit",xmPushButtonWidgetClass,form,XmNlabelString,xmlabel,NULL); /*18*/
	XmStringFree(xmlabel);
	
	XtAddEventHandler(form, NoEventMask, True, ClientMsgProc, NULL);
        XtAddEventHandler(form, EnterWindowMask, False, EnterWndProc, NULL);	
	XtRealizeWidget(topLevel);
	test();

	XtAddCallback(quit_button,XmNactivateCallback,cb_quit,NULL);
	XtAppMainLoop(app);
}

static void cb_quit(Widget w,XtPointer client_data,XtPointer call_data)
{
	XtCloseDisplay(XtDisplay(w));
	exit(0);
}