Trying to learn X programming.

[Rod Person]

This is a little Linux code that changes resolution of X on the fly.

There seems to be some differences in the Linux and FreeBSD use of XOpenDisplay. I 
read the man pages and tried changing the code a few different ways but it won't 
compile. Here's how I try to compile....

        gcc -o wmres wmres.c -I/usr/X11R6/include -IXmu -IX11

Any pointers or a good reference on the web somewhere. All I have are man pages and 
code at this point.




#include <X11/Xlib.h>
#include <X11/extensions/xf86dga.h>
#include <X11/extensions/xf86vmode.h>
#include <stdio.h>

int main (int argc, char *argv[])
{
        Display *dpy;
        XF86VidModeModeInfo **vm_modelines; 
        int vm_count;

        int i;
        int width, height;

        dpy=XOpenDisplay(DefaultScreen(0));

        XF86VidModeGetAllModeLines(dpy,XDefaultScreen(dpy),&vm_count,&vm_modelines);
        if(!(vm_count)) {
                fprintf(stderr,"error: no video modes found\n");
                exit(1);
   }

        if(argc > 2) {
                width = atoi(argv[1]);
                height = atoi(argv[2]);

                for(i=0; i < vm_count; i++) {
                        if(vm_modelines[i]->hdisplay==width && 
vm_modelines[i]->vdisplay==height) {
                                
XF86VidModeSwitchToMode(dpy,XDefaultScreen(dpy),vm_modelines[i]);
                                XFlush(dpy);
                                return 0;
                        }
                }
        }

        printf("\"Resolutions\" MENU\n");
        for(i=0; i < vm_count; i++) {
                printf("\"%dx%d\" EXEC %s %d 
%d\n",vm_modelines[i]->hdisplay,vm_modelines[i]->vdisplay, argv[0], 
vm_modelines[i]->hdisplay, vm_modelines[i]->vdisplay);
        }
        printf("\"Resolutions\" END\n");
        return 0;
}       

thanks

Rod


[EMAIL PROTECTED]
http://storm.prohosting.com/osbeef/osbeef.htm




To Unsubscribe: send mail to [EMAIL PROTECTED]
with "unsubscribe freebsd-hackers" in the body of the message