如何将ASCII字符转换为CGKeyCode？
我需要一个函数，给定一个字符，该函数返回与当前键盘布局上该字符的位置相关联的如何将ASCII字符转换为CGKeyCode？,c,macos,quartz-graphics,keypress,keycode,C,Macos,Quartz Graphics,Keypress,Keycode,我需要一个函数，给定一个字符，该函数返回与当前键盘布局上该字符的位置相关联的CGKeyCode。例如，给定“b”，如果使用美国QWERTY，则应返回kVK_ANSI_b；如果使用Dvorak，则应返回kVK_ANSI_N Win32 API具有用于此目的的函数；X11具有此功能。CGAPI中有这样的函数吗 我需要这个，以便将参数传递给。我尝试过使用，但这显然是修改器标志（我需要） 我对此进行了广泛的搜索，但找不到一个像样的答案。目前，我正在使用以下代码（），它可以工作，但并不十分优雅（并且很难解
CGKeyCodekVK_ANSI_bkVK_ANSI_N#include <stdint.h>
#include <stdio.h>
#include <ApplicationServices/ApplicationServices.h>
CGKeyCode keyCodeForCharWithLayout(const char c,
const UCKeyboardLayout *uchrHeader);
CGKeyCode keyCodeForChar(const char c)
{
CFDataRef currentLayoutData;
TISInputSourceRef currentKeyboard = TISCopyCurrentKeyboardInputSource();
if (currentKeyboard == NULL) {
fputs("Could not find keyboard layout\n", stderr);
return UINT16_MAX;
}
currentLayoutData = TISGetInputSourceProperty(currentKeyboard,
kTISPropertyUnicodeKeyLayoutData);
CFRelease(currentKeyboard);
if (currentLayoutData == NULL) {
fputs("Could not find layout data\n", stderr);
return UINT16_MAX;
}
return keyCodeForCharWithLayout(c,
(const UCKeyboardLayout *)CFDataGetBytePtr(currentLayoutData));
}
/* Beware! Messy, incomprehensible code ahead!
* TODO: XXX: FIXME! Please! */
CGKeyCode keyCodeForCharWithLayout(const char c,
const UCKeyboardLayout *uchrHeader)
{
uint8_t *uchrData = (uint8_t *)uchrHeader;
UCKeyboardTypeHeader *uchrKeyboardList = uchrHeader->keyboardTypeList;
/* Loop through the keyboard type list. */
ItemCount i, j;
for (i = 0; i < uchrHeader->keyboardTypeCount; ++i) {
/* Get a pointer to the keyToCharTable structure. */
UCKeyToCharTableIndex *uchrKeyIX = (UCKeyToCharTableIndex *)
(uchrData + (uchrKeyboardList[i].keyToCharTableIndexOffset));
/* Not sure what this is for but it appears to be a safeguard... */
UCKeyStateRecordsIndex *stateRecordsIndex;
if (uchrKeyboardList[i].keyStateRecordsIndexOffset != 0) {
stateRecordsIndex = (UCKeyStateRecordsIndex *)
(uchrData + (uchrKeyboardList[i].keyStateRecordsIndexOffset));
if ((stateRecordsIndex->keyStateRecordsIndexFormat) !=
kUCKeyStateRecordsIndexFormat) {
stateRecordsIndex = NULL;
}
} else {
stateRecordsIndex = NULL;
}
/* Make sure structure is a table that can be searched. */
if ((uchrKeyIX->keyToCharTableIndexFormat) != kUCKeyToCharTableIndexFormat) {
continue;
}
/* Check the table of each keyboard for character */
for (j = 0; j < uchrKeyIX->keyToCharTableCount; ++j) {
UCKeyOutput *keyToCharData =
(UCKeyOutput *)(uchrData + (uchrKeyIX->keyToCharTableOffsets[j]));
/* Check THIS table of the keyboard for the character. */
UInt16 k;
for (k = 0; k < uchrKeyIX->keyToCharTableSize; ++k) {
/* Here's the strange safeguard again... */
if ((keyToCharData[k] & kUCKeyOutputTestForIndexMask) ==
kUCKeyOutputStateIndexMask) {
long keyIndex = (keyToCharData[k] & kUCKeyOutputGetIndexMask);
if (stateRecordsIndex != NULL &&
keyIndex <= (stateRecordsIndex->keyStateRecordCount)) {
UCKeyStateRecord *stateRecord = (UCKeyStateRecord *)
(uchrData +
(stateRecordsIndex->keyStateRecordOffsets[keyIndex]));
if ((stateRecord->stateZeroCharData) == c) {
return (CGKeyCode)k;
}
} else if (keyToCharData[k] == c) {
return (CGKeyCode)k;
}
} else if (((keyToCharData[k] & kUCKeyOutputTestForIndexMask)
!= kUCKeyOutputSequenceIndexMask) &&
keyToCharData[k] != 0xFFFE &&
keyToCharData[k] != 0xFFFF &&
keyToCharData[k] == c) {
return (CGKeyCode)k;
}
}
}
}
return UINT16_MAX;
}
#包括
#包括
#包括
CGKeyCode KEYCODE FORCHARWITHLAYOUT（常量字符c，
const uc键盘布局*uchreader）；
CGKeyCode keyCodeForChar（常量字符c）
{
CFDataRef currentLayoutData；
TISInputSourceRef currentKeyboard=TISCopyCurrentKeyboardInputSource（）；
如果（currentKeyboard==NULL）{
fputs（“找不到键盘布局”，stderr）；
返回UINT16_最大值；
}
currentLayoutData=TISGetInputSourceProperty（currentKeyboard，
kTISPropertyUnicodeKeyLayoutData）；
CFRelease（当前键盘）；
如果（currentLayoutData==NULL）{
fputs（“找不到布局数据”，stderr）；
返回UINT16_最大值；
}
返回布局为（c，
（const UCKeyboardLayout*）CFDataGetBytePtr（currentLayoutData））；
}
/*当心！前面的代码乱七八糟，令人费解！
*TODO:XXX:FIXME！求你了*/
CGKeyCode KEYCODE FORCHARWITHLAYOUT（常量字符c，
常量UC键盘布局*UCH键盘）
{
uint8_t*uchrData=（uint8_t*）uchrHeader；
UCKeyboardTypeHeader*uchrKeyboardList=uchrHeader->keyboardTypeList；
/*循环浏览键盘类型列表*/
项目计数i，j；
对于（i=0；ikeyboardTypeCount；++i）{
/*获取指向keyToCharTable结构的指针*/
UCKeyToCharTableIndex*UCRKEYIX=（UCKeyToCharTableIndex*）
（uchrData+（uchrKeyboardList[i].keyToCharTableIndexOffset））；
/*不确定这是为了什么，但它似乎是一种保护措施*/
UCKeyStateRecordsIndex*状态记录sIndex；
如果（uchrKeyboardList[i].keyStateRecordsIndexOffset！=0）{
stateRecordsIndex=（UCKeyStateRecordsIndex*）
（uchrData+（uchrKeyboardList[i].keyStateRecordsIndexOffset））；
如果（（stateRecordsIndex->KeyStateRecordsIndex格式）=
KuckeystateRecordsIndex格式）{
stateRecordsIndex=NULL；
}
}否则{
stateRecordsIndex=NULL；
}
/*确保结构是可以搜索的表*/
if（（uchrKeyIX->keyToCharTableIndexFormat）！=kUCKeyToCharTableIndexFormat）{
继续；
}
/*检查每个键盘的表格中的字符*/
对于（j=0；jkeyToCharTableCount；++j）{
UCKeyOutput*keyToCharData=
（UCKeyOutput*）（uchrData+（uchrKeyIX->keytochartableoffset[j]）；
/*检查此键盘表格中的字符*/
uint16k；
对于（k=0；kkeyToCharTableSize；++k）{
/*这又是奇怪的保护措施*/
if（（keyToCharData[k]&kUCKeyOutputTestForIndexMask）==
KuckeyoutPutStateIndexTask）{
long keyIndex=（keyToCharData[k]&kUCKeyOutputGetIndexMask）；
如果（stateRecordsIndex！=NULL&&
keyIndex keyStateRecordCount）{
UCKeyStateRecord*状态记录=（UCKeyStateRecord*）
（uchrData）+
（stateRecordsIndex->KeyStateRecordOffset[keyIndex]）；
如果（（stateRecord->stateZeroCharData）==c）{
返回（CGKeyCode）k；
}
}else if（keyToCharData[k]==c）{
返回（CGKeyCode）k；
}
}else if（（keyToCharData[k]和kUCKeyOutputTestForIndexMask）
！=KuckeyoutPutSequenceIndexTask）&&
keyToCharData[k]！=0xFFFE&&
keyToCharData[k]！=0xFFFF&&
keyToCharData[k]==c）{
返回（CGKeyCode）k；
}
}
}
}
返回UINT16_最大值；
}
是否有a.）（最好）我忽略的标准函数，或b.）（几乎可以肯定）我自己编写的更优雅的方法？这就是我最终使用的方法。干净多了
#include <CoreFoundation/CoreFoundation.h>
#include <Carbon/Carbon.h> /* For kVK_ constants, and TIS functions. */
/* Returns string representation of key, if it is printable.
* Ownership follows the Create Rule; that is, it is the caller's
* responsibility to release the returned object. */
CFStringRef createStringForKey(CGKeyCode keyCode)
{
TISInputSourceRef currentKeyboard = TISCopyCurrentKeyboardInputSource();
CFDataRef layoutData =
TISGetInputSourceProperty(currentKeyboard,
kTISPropertyUnicodeKeyLayoutData);
const UCKeyboardLayout *keyboardLayout =
(const UCKeyboardLayout *)CFDataGetBytePtr(layoutData);
UInt32 keysDown = 0;
UniChar chars[4];
UniCharCount realLength;
UCKeyTranslate(keyboardLayout,
keyCode,
kUCKeyActionDisplay,
0,
LMGetKbdType(),
kUCKeyTranslateNoDeadKeysBit,
&keysDown,
sizeof(chars) / sizeof(chars[0]),
&realLength,
chars);
CFRelease(currentKeyboard);
return CFStringCreateWithCharacters(kCFAllocatorDefault, chars, 1);
}
/* Returns key code for given character via the above function, or UINT16_MAX
* on error. */
CGKeyCode keyCodeForChar(const char c)
{
static CFMutableDictionaryRef charToCodeDict = NULL;
CGKeyCode code;
UniChar character = c;
CFStringRef charStr = NULL;
/* Generate table of keycodes and characters. */
if (charToCodeDict == NULL) {
size_t i;
charToCodeDict = CFDictionaryCreateMutable(kCFAllocatorDefault,
128,
&kCFCopyStringDictionaryKeyCallBacks,
NULL);
if (charToCodeDict == NULL) return UINT16_MAX;
/* Loop through every keycode (0 - 127) to find its current mapping. */
for (i = 0; i < 128; ++i) {
CFStringRef string = createStringForKey((CGKeyCode)i);
if (string != NULL) {
CFDictionaryAddValue(charToCodeDict, string, (const void *)i);
CFRelease(string);
}
}
}
charStr = CFStringCreateWithCharacters(kCFAllocatorDefault, &character, 1);
/* Our values may be NULL (0), so we need to use this function. */
if (!CFDictionaryGetValueIfPresent(charToCodeDict, charStr,
(const void **)&code)) {
code = UINT16_MAX;
}
CFRelease(charStr);
return code;
}
#包括
#包括/*用于kVK_uu常数和TIS函数*/
/*返回键的字符串表示形式（如果可打印）。
*所有权遵循创造规则；也就是说，这是来电者的电话
*释放返回对象的责任*/
CFStringRef createStringForKey（CGKeyCode keyCode）
{
TISInputSourceRef currentKeyboard=TISCopyCurrentKeyboardInputSource（）；
CFDataRef布局数据=
TISGetInputSourceProperty（当前键盘，
kTISPropertyUnicodeKeyLayoutData）；
const UC键盘布局*键盘布局=
（const UCKeyboardLayout*）CFDataGetBytePtr（layoutData）；
UInt32键向下=0；
UniChar chars[4]；
UniharCount realLength；
UCKeyTranslate（键盘布局，
键码，
KuckeyaActionDisplay，
0,
LMGetKbdType（），
KuckeyTranslateNodeDadKeyBit，
&按下键，
sizeof（chars）/sizeof（chars[0]），
CFDataRef layoutData = TISGetInputSourceProperty(currentKeyboard, kTISPropertyUnicodeKeyLayoutData);
CFDataRef layoutData = (CFDataRef)TISGetInputSourceProperty(currentKeyboard, kTISPropertyUnicodeKeyLayoutData);
+ (NSString *)keyStringFormKeyCode:(CGKeyCode)keyCode
{
// Proper key detection seems to want a switch statement, unfortunately
switch (keyCode)
{
case 0: return @"a";
case 1: return @"s";
case 2: return @"d";
case 3: return @"f";
case 4: return @"h";
case 5: return @"g";
case 6: return @"z";
case 7: return @"x";
case 8: return @"c";
case 9: return @"v";
// what is 10?
case 11: return @"b";
case 12: return @"q";
case 13: return @"w";
case 14: return @"e";
case 15: return @"r";
case 16: return @"y";
case 17: return @"t";
case 18: return @"1";
case 19: return @"2";
case 20: return @"3";
case 21: return @"4";
case 22: return @"6";
case 23: return @"5";
case 24: return @"=";
case 25: return @"9";
case 26: return @"7";
case 27: return @"-";
case 28: return @"8";
case 29: return @"0";
case 30: return @"]";
case 31: return @"o";
case 32: return @"u";
case 33: return @"[";
case 34: return @"i";
case 35: return @"p";
case 36: return @"RETURN";
case 37: return @"l";
case 38: return @"j";
case 39: return @"'";
case 40: return @"k";
case 41: return @";";
case 42: return @"\\";
case 43: return @",";
case 44: return @"/";
case 45: return @"n";
case 46: return @"m";
case 47: return @".";
case 48: return @"TAB";
case 49: return @"SPACE";
case 50: return @"`";
case 51: return @"DELETE";
case 52: return @"ENTER";
case 53: return @"ESCAPE";
// some more missing codes abound, reserved I presume, but it would
// have been helpful for Apple to have a document with them all listed
case 65: return @".";
case 67: return @"*";
case 69: return @"+";
case 71: return @"CLEAR";
case 75: return @"/";
case 76: return @"ENTER"; // numberpad on full kbd
case 78: return @"-";
case 81: return @"=";
case 82: return @"0";
case 83: return @"1";
case 84: return @"2";
case 85: return @"3";
case 86: return @"4";
case 87: return @"5";
case 88: return @"6";
case 89: return @"7";
case 91: return @"8";
case 92: return @"9";
case 96: return @"F5";
case 97: return @"F6";
case 98: return @"F7";
case 99: return @"F3";
case 100: return @"F8";
case 101: return @"F9";
case 103: return @"F11";
case 105: return @"F13";
case 107: return @"F14";
case 109: return @"F10";
case 111: return @"F12";
case 113: return @"F15";
case 114: return @"HELP";
case 115: return @"HOME";
case 116: return @"PGUP";
case 117: return @"DELETE"; // full keyboard right side numberpad
case 118: return @"F4";
case 119: return @"END";
case 120: return @"F2";
case 121: return @"PGDN";
case 122: return @"F1";
case 123: return @"LEFT";
case 124: return @"RIGHT";
case 125: return @"DOWN";
case 126: return @"UP";
default:
return @"Unknown key";
// Unknown key, bail and note that RUI needs improvement
//fprintf(stderr, "%ld\tKey\t%c (DEBUG: %d)\n", currenttime, keyCode;
//exit(EXIT_FAILURE;
}
}
+ (CGKeyCode)keyCodeFormKeyString:(NSString *)keyString
{
if ([keyString isEqualToString:@"a"]) return 0;
if ([keyString isEqualToString:@"s"]) return 1;
if ([keyString isEqualToString:@"d"]) return 2;
if ([keyString isEqualToString:@"f"]) return 3;
if ([keyString isEqualToString:@"h"]) return 4;
if ([keyString isEqualToString:@"g"]) return 5;
if ([keyString isEqualToString:@"z"]) return 6;
if ([keyString isEqualToString:@"x"]) return 7;
if ([keyString isEqualToString:@"c"]) return 8;
if ([keyString isEqualToString:@"v"]) return 9;
// what is 10?
if ([keyString isEqualToString:@"b"]) return 11;
if ([keyString isEqualToString:@"q"]) return 12;
if ([keyString isEqualToString:@"w"]) return 13;
if ([keyString isEqualToString:@"e"]) return 14;
if ([keyString isEqualToString:@"r"]) return 15;
if ([keyString isEqualToString:@"y"]) return 16;
if ([keyString isEqualToString:@"t"]) return 17;
if ([keyString isEqualToString:@"1"]) return 18;
if ([keyString isEqualToString:@"2"]) return 19;
if ([keyString isEqualToString:@"3"]) return 20;
if ([keyString isEqualToString:@"4"]) return 21;
if ([keyString isEqualToString:@"6"]) return 22;
if ([keyString isEqualToString:@"5"]) return 23;
if ([keyString isEqualToString:@"="]) return 24;
if ([keyString isEqualToString:@"9"]) return 25;
if ([keyString isEqualToString:@"7"]) return 26;
if ([keyString isEqualToString:@"-"]) return 27;
if ([keyString isEqualToString:@"8"]) return 28;
if ([keyString isEqualToString:@"0"]) return 29;
if ([keyString isEqualToString:@"]"]) return 30;
if ([keyString isEqualToString:@"o"]) return 31;
if ([keyString isEqualToString:@"u"]) return 32;
if ([keyString isEqualToString:@"["]) return 33;
if ([keyString isEqualToString:@"i"]) return 34;
if ([keyString isEqualToString:@"p"]) return 35;
if ([keyString isEqualToString:@"RETURN"]) return 36;
if ([keyString isEqualToString:@"l"]) return 37;
if ([keyString isEqualToString:@"j"]) return 38;
if ([keyString isEqualToString:@"'"]) return 39;
if ([keyString isEqualToString:@"k"]) return 40;
if ([keyString isEqualToString:@";"]) return 41;
if ([keyString isEqualToString:@"\\"]) return 42;
if ([keyString isEqualToString:@","]) return 43;
if ([keyString isEqualToString:@"/"]) return 44;
if ([keyString isEqualToString:@"n"]) return 45;
if ([keyString isEqualToString:@"m"]) return 46;
if ([keyString isEqualToString:@"."]) return 47;
if ([keyString isEqualToString:@"TAB"]) return 48;
if ([keyString isEqualToString:@"SPACE"]) return 49;
if ([keyString isEqualToString:@"`"]) return 50;
if ([keyString isEqualToString:@"DELETE"]) return 51;
if ([keyString isEqualToString:@"ENTER"]) return 52;
if ([keyString isEqualToString:@"ESCAPE"]) return 53;
// some more missing codes abound, reserved I presume, but it would
// have been helpful for Apple to have a document with them all listed
if ([keyString isEqualToString:@"."]) return 65;
if ([keyString isEqualToString:@"*"]) return 67;
if ([keyString isEqualToString:@"+"]) return 69;
if ([keyString isEqualToString:@"CLEAR"]) return 71;
if ([keyString isEqualToString:@"/"]) return 75;
if ([keyString isEqualToString:@"ENTER"]) return 76; // numberpad on full kbd
if ([keyString isEqualToString:@"="]) return 78;
if ([keyString isEqualToString:@"="]) return 81;
if ([keyString isEqualToString:@"0"]) return 82;
if ([keyString isEqualToString:@"1"]) return 83;
if ([keyString isEqualToString:@"2"]) return 84;
if ([keyString isEqualToString:@"3"]) return 85;
if ([keyString isEqualToString:@"4"]) return 86;
if ([keyString isEqualToString:@"5"]) return 87;
if ([keyString isEqualToString:@"6"]) return 88;
if ([keyString isEqualToString:@"7"]) return 89;
if ([keyString isEqualToString:@"8"]) return 91;
if ([keyString isEqualToString:@"9"]) return 92;
if ([keyString isEqualToString:@"F5"]) return 96;
if ([keyString isEqualToString:@"F6"]) return 97;
if ([keyString isEqualToString:@"F7"]) return 98;
if ([keyString isEqualToString:@"F3"]) return 99;
if ([keyString isEqualToString:@"F8"]) return 100;
if ([keyString isEqualToString:@"F9"]) return 101;
if ([keyString isEqualToString:@"F11"]) return 103;
if ([keyString isEqualToString:@"F13"]) return 105;
if ([keyString isEqualToString:@"F14"]) return 107;
if ([keyString isEqualToString:@"F10"]) return 109;
if ([keyString isEqualToString:@"F12"]) return 111;
if ([keyString isEqualToString:@"F15"]) return 113;
if ([keyString isEqualToString:@"HELP"]) return 114;
if ([keyString isEqualToString:@"HOME"]) return 115;
if ([keyString isEqualToString:@"PGUP"]) return 116;
if ([keyString isEqualToString:@"DELETE"]) return 117;
if ([keyString isEqualToString:@"F4"]) return 118;
if ([keyString isEqualToString:@"END"]) return 119;
if ([keyString isEqualToString:@"F2"]) return 120;
if ([keyString isEqualToString:@"PGDN"]) return 121;
if ([keyString isEqualToString:@"F1"]) return 122;
if ([keyString isEqualToString:@"LEFT"]) return 123;
if ([keyString isEqualToString:@"RIGHT"]) return 124;
if ([keyString isEqualToString:@"DOWN"]) return 125;
if ([keyString isEqualToString:@"UP"]) return 126;
return 0;
//fprintf(stderr, "keyString %s Not Found. Aborting...\n", keyString);
//exit(EXIT_FAILURE);
}
NSString* keyCodeToString(CGKeyCode keyCode)
{
TISInputSourceRef currentKeyboard = TISCopyCurrentKeyboardInputSource();
CFDataRef uchr =
(CFDataRef)TISGetInputSourceProperty(currentKeyboard,
kTISPropertyUnicodeKeyLayoutData);
const UCKeyboardLayout *keyboardLayout =
(const UCKeyboardLayout*)CFDataGetBytePtr(uchr);
if(keyboardLayout)
{
UInt32 deadKeyState = 0;
UniCharCount maxStringLength = 255;
UniCharCount actualStringLength = 0;
UniChar unicodeString[maxStringLength];
OSStatus status = UCKeyTranslate(keyboardLayout,
keyCode, kUCKeyActionDown, 0,
LMGetKbdType(), 0,
&deadKeyState,
maxStringLength,
&actualStringLength, unicodeString);
if (actualStringLength == 0 && deadKeyState)
{
status = UCKeyTranslate(keyboardLayout,
kVK_Space, kUCKeyActionDown, 0,
LMGetKbdType(), 0,
&deadKeyState,
maxStringLength,
&actualStringLength, unicodeString);
}
if(actualStringLength > 0 && status == noErr)
return [[NSString stringWithCharacters:unicodeString
length:(NSUInteger)actualStringLength] lowercaseString];
}
return nil;
}
NSNumber* charToKeyCode(const char c)
{
static NSMutableDictionary* dict = nil;
if (dict == nil)
{
dict = [NSMutableDictionary dictionary];
// For every keyCode
size_t i;
for (i = 0; i < 128; ++i)
{
NSString* str = keyCodeToString((CGKeyCode)i);
if(str != nil && ![str isEqualToString:@""])
{
[dict setObject:[NSNumber numberWithInt:i] forKey:str];
}
}
}
NSString * keyChar = [NSString stringWithFormat:@"%c" , c];
return [dict objectForKey:keyChar];
}
- (NSDictionary *)characterToKeyCode:(NSString *)character {
static NSDictionary * keyMapDict;
if (keyMapDict == nil) {
keyMapDict = [self makeKeyMap];
}
/*
The returned dictionary contains entries for the virtual key code and boolen flags
for modifier keys used for the character.
*/
return [keyMapDict objectForKey:character];
}
- (NSDictionary *)makeKeyMap {
CGKeyCode keyCode;
CGEventRef coreEvent;
NSEvent * keyEvent;
NSUInteger modifiers = 0;
NSMutableDictionary * subDict, * keyMapDict;
NSString *character;
BOOL modKeyIsUsed;
static NSDictionary * modFlagDict;
static NSArray * modFlags;
// create dictionary of modifier names and keys. I've used all the modifiers, but I doubt theya re all needed.
if (modFlagDict == nil) {
modFlagDict = @{@"option":@(NSEventModifierFlagOption),
@"shift": @(NSEventModifierFlagShift),
@"function":@(NSEventModifierFlagFunction),
@"control": @(NSEventModifierFlagControl),
@"command":@(NSEventModifierFlagCommand)};
modFlags = [modFlagDict allValues];
}
keyMapDict = [NSMutableDictionary dictionary];
// run through 128 base key codes to see what they produce
for (keyCode = 0; keyCode < 128; ++keyCode) {
// create dummy NSEvent from a CGEvent for a keypress
coreEvent = CGEventCreateKeyboardEvent(NULL, keyCode, true);
keyEvent = [NSEvent eventWithCGEvent:coreEvent];
CFRelease(coreEvent);
if (keyEvent.type == NSEventTypeKeyDown) {
// this do/while loop through every permutation of modifier keys for a given key code
do {
subDict = [NSMutableDictionary dictionary];
// cerate dictionary containing current modifier keys and virtual key code
for (NSString * key in modFlagDict) {
modKeyIsUsed = ([(NSNumber *)[modFlagDict objectForKey:key] unsignedLongValue] & modifiers) ? YES : NO;
[subDict setObject:[NSNumber numberWithBool:modKeyIsUsed]
forKey:key];
}
[subDict setObject:[NSNumber numberWithUnsignedLong:(unsigned long)keyCode]
forKey:@"virtKeyCode"];
// manipulate the NSEvent to get character produce by virtual key code and modifiers
if (modifiers == 0) {
character = [keyEvent characters];
} else {
character = [keyEvent charactersByApplyingModifiers:modifiers];
}
// add sub-dictionary to main dictionary using character as key
if (![keyMapDict objectForKey:character]) {
[keyMapDict setObject:[NSDictionary dictionaryWithDictionary:subDict]
forKey:character];
}
// permutate the modifiers
modifiers = [self permutatateMods:modFlags];
} while (modifiers != 0);
}
}
return [NSDictionary dictionaryWithDictionary:keyMapDict];
}
- (NSUInteger)permutatateMods:(NSArray *) modFlags {
static NSMutableIndexSet * idxSet;
NSArray * modArray;
NSEnumerator * e;
NSNumber * modObj;
NSUInteger modifiers = 0, idx = 0;
if (idxSet == nil) {
idxSet = [NSMutableIndexSet indexSet];
}
/*
Starting at 0, if the index exists, remove it and move up; if the index doesn't exist, add it. Will
cycle through a standard binary progression. Indexes are then applied to the passed array, and the
selected elements are 'OR'ed together
*/
BOOL doneFlag = NO;
while (!doneFlag) {
if ([idxSet containsIndex:idx]) {
[idxSet removeIndex:idx++];
continue;
}
if (idx < [modFlags count]) {
[idxSet addIndex:idx];
} else {
[idxSet removeAllIndexes];
}
doneFlag = YES;
}
modArray = [modFlags objectsAtIndexes:idxSet];
e = [modArray objectEnumerator];
while (modObj = [e nextObject]) {
modifiers |= [modObj unsignedIntegerValue];
}
return modifiers;
}
NSDictionary * d = [self characterToKeyCode:@"π"];
Dictionary: {
command = 0;
control = 0;
function = 0;
option = 1;
shift = 0;
virtKeyCode = 35;
}