Terminal is very useful in managing of rooms of Macs with Apple Remote Desktop. One thing I do often is change the screen resolution. To do that, I use a custom Terminal program that's based largely on Jeffrey Osterman's code posted in this Mac OS X Hints Forums thread.
It is easy to compile (you'll need Xcode to do so, however), and it supersedes the old and missing cscreen. First, here's the code:
Save that as a pure text file named setgetscreenres.m, then compile it in Terminal using the command shown in the code (assuming you're in the directory where the file is saved):
[robg adds: I compiled this, then tested it, and it works as described.]
It is easy to compile (you'll need Xcode to do so, however), and it supersedes the old and missing cscreen. First, here's the code:
/*
* setgetscreenres.m
*
* juanfc 2009-04-13
* Based on newscreen
* Created by Jeffrey Osterman on 10/30/07.
* Copyright 2007 Jeffrey Osterman. All rights reserved.
* PROVIDED AS IS AND WITH NO WARRANTIES WHATSOEVER
* http://forums.macosxhints.com/showthread.php?t=59575
*
* COMPILE:
* c++ setgetscreenres.m -framework ApplicationServices -o setgetscreenres
* USE:
* setgetscreenres 1440 900
*/
#include <ApplicationServices/ApplicationServices.h>
bool MyDisplaySwitchToMode (CGDirectDisplayID display, CFDictionaryRef mode);
int main (int argc, const char * argv[])
{
int h; // horizontal resolution
int v; // vertical resolution
CFDictionaryRef switchMode; // mode to switch to
CGDirectDisplayID mainDisplay; // ID of main display
CFDictionaryRef CGDisplayCurrentMode(CGDirectDisplayID display);
if (argc == 1) {
CGRect screenFrame = CGDisplayBounds(kCGDirectMainDisplay);
CGSize screenSize = screenFrame.size;
printf("%d %d\n", screenSize.width, screenSize.height);
return 0;
}
if (argc != 3 || !(h = atoi(argv[1])) || !(v = atoi(argv[2])) ) {
fprintf(stderr, "ERROR: Use %s horres vertres\n", argv[0]);
return -1;
}
mainDisplay = CGMainDisplayID();
switchMode = CGDisplayBestModeForParameters(mainDisplay, 32, h, v, NULL);
if (! MyDisplaySwitchToMode(mainDisplay, switchMode)) {
fprintf(stderr, "Error changing resolution to %d %d\n", h, v);
return 1;
}
return 0;
}
bool MyDisplaySwitchToMode (CGDirectDisplayID display, CFDictionaryRef mode)
{
CGDisplayConfigRef config;
if (CGBeginDisplayConfiguration(&config) == kCGErrorSuccess) {
CGConfigureDisplayMode(config, display, mode);
CGCompleteDisplayConfiguration(config, kCGConfigureForSession );
return true;
}
return false;
}c++ setgetscreenres.m -framework ApplicationServices -o setgetscreenres[robg adds: I compiled this, then tested it, and it works as described.]
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