Mac OS X:显示/设置分辨率的命令(源程序) · 想当 Apple菜鸟不容易

注：把变更现实分辨率的代码完成了。变更的时候，因为10.6不再提供诸如10.5之前的设置最佳分辨率的系统功能，所以需要自己编写。设置和显示显示分辨率－源码下面是一个设置和显示当前系统显示设备和分辨率的源码如果有兴趣，大家给测试一下各自的环境下，它工作的情况。几个概念： Display: 每个当前连接到系统中的显示器 Main Display: 当前的主显示设备 Mode: 是每个显示设备和系统之间连接后，系统自动生成的管理它的一个内存对象，分辨率是其中的一个部分，每个显示设备可能有好多mode，这些mode组成一个列表。编译步骤：首先要安装了xcode开发环境，把下面的源码复制到一个文本编辑器中，比如TextEdit，然后使用文本方式保存，比如该源码的文件命是screenresolution.m，保存在你的Desktop上。再编译：在Terminal里面输入命令： cd ~/Desktopc++ screenresolution.m -framework ApplicationServices -o screenresolution -arch i386 这样就在你的Desktop上生成了一个交screenresolution的程序. 具体使用，在Termianl里面运行： - 获得帮助：~/Desktop/screenresolution -h - 获得当前显示器的个数：~/Desktop/screenresolution -a - 当前主显示器的分辨率：~/Desktop/screenresolution - 获得当前第2个显示器的分辨率：~/Desktop/screenresolution 2 - 获得主显示器支持的分辨率列表：~/Desktop/screenresolution -l - 获得第2个显示器支持的分辨率列表：~/Desktop/screenresolution -l 2 - 设置当前主显示器的分辨率为800x600：~/Desktop/screenresolution -s 800 600 - 设置第2个显示器的分辨率为800x600：~/Desktop/screenresolution -s 2 800 600 注意：这个版本是为OS X 10.6以上版本做的. 在10.6系统上编译成功并运行成功；没有在10.5上编译过；10.6编译成功的执行命令，也没有在10.5系统上运行过－应该是无法运行的－谁有条件给测试一下。因为10.6把好多10.5里面的底层函数都改了。已知的： - 没有考虑两个显示器mirro的状态 - 设置分辨率尽量使用系统列出的所支持的分辨率，否则设置可能不成功。其它的： - 测试过的给个回信。 - 希望新功能的, 请说 - 这个程序主要是用来控制远程电脑的分辨率。源代码 /* * screenresolution.m * * Description: * It set/get current Online display resolutions. * * The version on webpage http://forums.macosxhints.com/showthread.php?t=59575 * is before 10.6. This is for 10.6 and more functions. * * Author: * Tony Liu, June 2011 * * Version History: * 2011-06-01: add -a option. * 2011-06-08: Display adding flags and not display duplicate modes. * 2011-06-09: Adding set the best fit resolution function. * * COMPILE: * c++ screenresolution.m -framework ApplicationServices -o screenresolution -arch i386 * */#include <ApplicationServices/ApplicationServices.h>struct sLIST { double width, height; CGDisplayModeRef mode;};typedef int (*compfn)(const void*, const void*);void ListDisplays(uint32_t displayTotal);void ListDisplayAllMode (CGDirectDisplayID displayID, int index);void PrintUsage(const char *argv[]);void PrintModeParms (double width, double height, double depth, double freq, int flag);int GetModeParms (CGDisplayModeRef mode, double *width, double *height, double *depth, double *freq, int *flag);int GetDisplayParms(CGDirectDisplayID disp, double *width, double *height, double *depth, double *freq, int *flag);bool GetBestDisplayMod(CGDirectDisplayID display, double dwidth, double dheight);int modecompare(struct sLIST *elem1, struct sLIST *elem2);uint32_t maxDisplays = 20;CGDirectDisplayID onlineDisplayIDs[20];uint32_t displayTotal;char *sysFlags[]={"Unknown","Interlaced,", "Multi-Display,", "Not preset,", "Stretched,"};char flagString[200];int main (int argc, const char * argv[]){ double width, height, depth, freq; int flag; int displayNum; CGDirectDisplayID theDisplay; // 1. Getting system info. if (CGGetOnlineDisplayList (maxDisplays, onlineDisplayIDs, &displayTotal) != kCGErrorSuccess) { printf("Error on getting online display List."); return -1; } if (argc == 1) { CGRect screenFrame = CGDisplayBounds(kCGDirectMainDisplay); CGSize screenSize = screenFrame.size; printf("%.0f %.0f/n", screenSize.width, screenSize.height); return 0; } if (! strcmp(argv[1],"-l")) { if (argc == 2) { ListDisplays(displayTotal); return 0; } else if (argc == 3) { displayNum = atoi(argv[2]); if (displayNum <= displayTotal && displayNum > 0) { ListDisplayAllMode (onlineDisplayIDs[displayNum-1], 0); } } return 0; } if (! strcmp(argv[1],"-a")) { printf("Total online displays: %d/n", displayTotal); return 0; } if ((! strcmp(argv[1],"-?")) || (! strcmp(argv[1],"-h"))) { PrintUsage(argv); return 0; } if (! strcmp(argv[1],"-s")) { if (argc == 4) { displayNum = 1; width = atoi(argv[2]); height = atoi(argv[3]); } else if (argc == 5) { displayNum = atoi(argv[2]); width = atoi(argv[3]); height = atoi(argv[4]); } if (displayNum <= displayTotal) flag = GetBestDisplayMod(displayNum-1, width, height); return flag; } displayNum = atoi(argv[1]); if (displayNum <= displayTotal) { GetDisplayParms(onlineDisplayIDs[displayNum-1], &width, &height, &depth, &freq, &flag); PrintModeParms (width, height, depth, freq, flag); return 0; } else { fprintf(stderr, "ERROR: display number out of bounds; displays on this mac: %d./n", displayTotal); return -1; } return 0;}void ListDisplays(uint32_t displayTotal){ uint32_t i; CGDisplayModeRef mode; double width, height, depth, freq; int flag; // CGDirectDisplayID mainDisplay = CGMainDisplayID(); printf("Total Online Displays: %d/n", displayTotal); for (i = 0 ; i < displayTotal ; i++ ) { printf (" Display %d (id %d): ", i+1, onlineDisplayIDs[i]); GetDisplayParms(onlineDisplayIDs[i], &width, &height, &depth, &freq, &flag); if ( i = 0 ) printf(" (main) "); PrintModeParms (width, height, depth, freq, flag); }}void ListDisplayAllMode (CGDirectDisplayID displayID, int iNum){ CFArrayRef modeList; CGDisplayModeRef mode; CFIndex index, count; double width, height, depth, freq; int flag; double width1, height1, depth1, freq1; int flag1; modeList = CGDisplayCopyAllDisplayModes (displayID, NULL); if (modeList == NULL) return; count = CFArrayGetCount (modeList); width1=0; height1=0; depth1=0; freq1=0; flag1=0; if (iNum <= 0) { for (index = 0; index < count; index++) { mode = (CGDisplayModeRef)CFArrayGetValueAtIndex (modeList, index); GetModeParms(mode, &width, &height, &depth, &freq, &flag); PrintModeParms (width, height, depth, freq, flag); } } } else if (iNum <= count) { mode = (CGDisplayModeRef)CFArrayGetValueAtIndex (modeList, iNum-1); GetModeParms(mode, &width, &height, &depth, &freq, &flag); PrintModeParms (width, height, depth, freq, flag); } CFRelease(modeList);}void PrintModeParms (double width, double height, double depth, double freq, int flag){ printf ("%ld x %ld x %ld @ %ld Hz, <%d>/n", (long int)width, (long int)height, (long int)depth, (long int)freq, flag);}int GetDisplayParms(CGDirectDisplayID disp, double *width, double *height, double *depth, double *freq, int *flag){ int iReturn=0; CGDisplayModeRef Mode = CGDisplayCopyDisplayMode(disp); iReturn = GetModeParms (Mode, width, height, depth, freq, flag); CGDisplayModeRelease (Mode); return iReturn;}int GetModeParms (CGDisplayModeRef Mode, double *width, double *height, double *depth, double *freq, int *sflag){ *width = CGDisplayModeGetWidth (Mode); *height = CGDisplayModeGetHeight (Mode); *freq = CGDisplayModeGetRefreshRate (Mode); CFStringRef pixelEncoding = CGDisplayModeCopyPixelEncoding (Mode); *depth = 0; if (pixelEncoding = NULL) return -1; if (pixelEncoding = CFSTR(IO32BitDirectPixels)) *depth = 32; else if (pixelEncoding = CFSTR(IO16BitDirectPixels)) *depth = 16; else *depth = 8; *sflag = CGDisplayModeGetIOFlags(Mode); CFRelease(pixelEncoding); return 0;}bool GetBestDisplayMod(CGDirectDisplayID display, double dwidth, double dheight){ CFArrayRef modeList; CGDisplayModeRef mode; CFIndex index, count, sindex, scount=0; double width, height, depth, freq; double width1, height1, depth1, freq1; int flag, flag1; struct sLIST mList[100]; int ireturn=0; modeList = CGDisplayCopyAllDisplayModes (display, NULL); if (modeList == NULL) return; count = CFArrayGetCount (modeList); scount=0; for (index = 0; index < count; index++) { mode = (CGDisplayModeRef)CFArrayGetValueAtIndex (modeList, index); GetModeParms(mode, &width, &height, &depth, &freq, &flag); // printf("........ scount=%d/n", (int)scount); if (!((width==width1) && (height==height1) && (depth==depth1) && (freq==freq1) && (flag==flag1))) { if (CGDisplayModeIsUsableForDesktopGUI(mode)) { mList[scount].mode=mode; mList[scount].width=width; mList[scount].height=height; width1=width; height1=height; depth1=depth; freq1=freq; flag1=flag; scount++; } } } mode=NULL; qsort ((void *) mList, scount, sizeof(struct sLIST), (compfn) modecompare); for (index=0; index<scount; index++) { if (mList[index].width >= dwidth) { if (mList[index].height >= dheight) { mode = mList[index].mode; break; } } } CGDisplayConfigRef pConfigRef; CGConfigureOption option=kCGConfigurePermanently; if ((mode != NULL) && (CGBeginDisplayConfiguration(&pConfigRef) == kCGErrorSuccess)) { CGConfigureDisplayWithDisplayMode(pConfigRef, display, mode, NULL); if (CGCompleteDisplayConfiguration (pConfigRef, option) !=kCGErrorSuccess) CGCancelDisplayConfiguration (pConfigRef); } else ireturn = -1; CFRelease(modeList); return ireturn;}int modecompare(struct sLIST *elem1, struct sLIST *elem2){ if ( elem1->width < elem2->width) return -1; else if (elem1->width > elem2->width) return 1; if (elem1->height < elem2->height) return -1; else if (elem1->height > elem2->height) return 1; else return 0;}void PrintUsage(const char *argv[]){ char *fname = strrchr(argv[0], '/')+1; printf("Screen Resolution v1.0, Mac OS X 10.6 or later, i386/n"); printf("Copyright 2010 Tony Liu. All rights reserved. June 1, 2010/n"); printf("/nUsage:"); printf(" %s -a/n", fname); printf(" %s [-l] [1..9]/n", fname); printf(" %s -s [ 1..9 ] hor_res vert_res/n", fname); printf(" %s -? | -h this help./n/n", fname); printf(" -l list resolution, depth and refresh rate/n"); printf(" 1..9 display # (default: main display)/n"); printf(" -l 1-9 List all support for the display #/n"); printf(" -s Set mode./n"); printf(" hor_res horizontal resolution/n"); printf("vert_res vertical resolution/n/n"); printf("Examples:/n"); printf("%s -a get online display number/n", fname); printf("%s get current main diplay resolution/n", fname); printf("%s 3 get current resolution of third display/n", fname); printf("%s -l get resolution, bit depth and refresh rate of all displays/n", fname); printf("%s -l 1 get first display all supported mode/n", fname); printf("%s -l 1 2 get first display the second supported mode/n", fname); printf("%s -s 800 600 set resolution of main display to 800x600/n", fname); printf("%s -s 2 800 600 set resolution of secondary display to 800x600/n", fname);}