#include <stdio.h>
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/extensions/dmxext.h>
int main(int argc, char **argv)
{
Display *display = NULL;
int event_base;
int error_base;
int major_version, minor_version, patch_version;
int width, height, shiftX, shiftY, status;
DMXDesktopAttributes attr;
unsigned int mask;
if (argc != 6) {
printf("Usage: %s display width height shiftX shiftY\n", argv[0]);
return -1;
}
if (!(display = XOpenDisplay(argv[1]))) {
printf("Cannot open display %s\n", argv[1]);
return -1;
}
width = strtol(argv[2], NULL, 0);
height = strtol(argv[3], NULL, 0);
shiftX = strtol(argv[4], NULL, 0);
shiftY = strtol(argv[5], NULL, 0);
if (!DMXQueryExtension(display, &event_base, &error_base)) {
printf("DMX extension not present\n");
return -1;
}
printf("DMX extension present: event_base = %d, error_base = %d\n",
event_base, error_base);
if (!DMXQueryVersion(display,
&major_version, &minor_version, &patch_version)) {
printf("Could not get extension version\n");
return -1;
}
printf("Extension version: %d.%d patch %d\n",
major_version, minor_version, patch_version);
mask = (DMXDesktopWidth |
DMXDesktopHeight |
DMXDesktopShiftX |
DMXDesktopShiftY);
attr.width = width;
attr.height = height;
attr.shiftX = shiftX;
attr.shiftY = shiftY;
switch (status = DMXChangeDesktopAttributes(display, mask, &attr)) {
case DmxBadXinerama:
printf("status = %d (No Xinerama)\n", status);
break;
case DmxBadValue:
printf("status = %d (Bad Value)\n", status);
break;
case Success:
printf("status = %d (Success)\n", status);
break;
default:
printf("status = %d (UNKNOWN ERROR *****)\n", status);
break;
}
XCloseDisplay(display);
return 0;
}