我需要这样做才能配置我的应用程序。 我有QLineEdit字段和重新实现的keyPressEvent方法。
QKeyEvent *ke = ...
QString txt;
if(ke->modifiers() & Qt::ControlModifier)
txt += "Ctrl+";
if(ke->modifiers() & Qt::AltModifier)
txt += "Alt+";
if(ke->modifiers() & Qt::ShiftModifier)
txt += "Shift+";
if(ke->key() >= Qt::Key_0 && ke->key() <= Qt::Key_9)
txt += ('0' + ke->key() - Qt::Key_0);
else if(ke->key() >= Qt::Key_A && ke->key() <= Qt::Key_Z)
txt += ('A' + ke->key() - Qt::Key_A);
ui->hotkeyEdit->setText(txt);
但是这个解决方案只能用英文字符创建快捷方式。例如，当我使用俄语键盘布局时，此代码将显示相同的序列，但使用英文字符，放在相同的键盘键上。
答案 0 :(得分：19)
你可能觉得非常有用的是函数QKeySequence().toString()。
以下是我用于捕获用户定义快捷方式的代码的一部分。通过一些修改，它可以在您的项目中执行任何操作。希望它有所帮助（对不起这个问题）：
if (event->type() == QEvent::KeyPress){
QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
int keyInt = keyEvent->key();
Qt::Key key = static_cast<Qt::Key>(keyInt);
if(key == Qt::Key_unknown){
qDebug() << "Unknown key from a macro probably";
return;
}
// the user have clicked just and only the special keys Ctrl, Shift, Alt, Meta.
if(key == Qt::Key_Control ||
key == Qt::Key_Shift ||
key == Qt::Key_Alt ||
key == Qt::Key_Meta)
{
qDebug() << "Single click of special key: Ctrl, Shift, Alt or Meta";
qDebug() << "New KeySequence:" << QKeySequence(keyInt).toString(QKeySequence::NativeText);
return;
}
// check for a combination of user clicks
Qt::KeyboardModifiers modifiers = keyEvent->modifiers();
QString keyText = keyEvent->text();
// if the keyText is empty than it's a special key like F1, F5, ...
qDebug() << "Pressed Key:" << keyText;
QList<Qt::Key> modifiersList;
if(modifiers & Qt::ShiftModifier)
keyInt += Qt::SHIFT;
if(modifiers & Qt::ControlModifier)
keyInt += Qt::CTRL;
if(modifiers & Qt::AltModifier)
keyInt += Qt::ALT;
if(modifiers & Qt::MetaModifier)
keyInt += Qt::META;
qDebug() << "New KeySequence:" << QKeySequence(keyInt).toString(QKeySequence::NativeText);
}
答案 1 :(得分：6)
如果有人关心上面的Tihomir Dolapchiev解决方案的python版本。我刚刚翻译了它，效果很好。只是张贴以供将来参考。
class KeySequenceEdit(QtGui.QLineEdit):
"""
This class is mainly inspired by
http://stackoverflow.com/a/6665017
"""
def __init__(self, keySequence, *args):
super(KeySequenceEdit, self).__init__(*args)
self.keySequence = keySequence
self.setKeySequence(keySequence)
def setKeySequence(self, keySequence):
self.keySequence = keySequence
self.setText(self.keySequence.toString(QtGui.QKeySequence.NativeText))
def keyPressEvent(self, e):
if e.type() == QtCore.QEvent.KeyPress:
key = e.key()
if key == QtCore.Qt.Key_unknown:
warnings.warn("Unknown key from a macro probably")
return
# the user have clicked just and only the special keys Ctrl, Shift, Alt, Meta.
if(key == QtCore.Qt.Key_Control or
key == QtCore.Qt.Key_Shift or
key == QtCore.Qt.Key_Alt or
key == QtCore.Qt.Key_Meta):
print("Single click of special key: Ctrl, Shift, Alt or Meta")
print("New KeySequence:", QtGui.QKeySequence(key).toString(QtGui.QKeySequence.NativeText))
return
# check for a combination of user clicks
modifiers = e.modifiers()
keyText = e.text()
# if the keyText is empty than it's a special key like F1, F5, ...
print("Pressed Key:", keyText)
if modifiers & QtCore.Qt.ShiftModifier:
key += QtCore.Qt.SHIFT
if modifiers & QtCore.Qt.ControlModifier:
key += QtCore.Qt.CTRL
if modifiers & QtCore.Qt.AltModifier:
key += QtCore.Qt.ALT
if modifiers & QtCore.Qt.MetaModifier:
key += QtCore.Qt.META
print("New KeySequence:", QtGui.QKeySequence(key).toString(QtGui.QKeySequence.NativeText))
self.setKeySequence(QtGui.QKeySequence(key))
答案 2 :(得分：3)
您可以为操作指定键盘快捷键。
以下是可以做到的。
actionName->setShortcut(QKeySequence::New); //for predefined shortcuts like new, close, open..
或者您可以使用此
定义自己的快捷方式actionName->setShortcut(QKeySequence("Ctrl+N")); // sets Ctrl + N for w.e the action does
在第一种情况下，qt会自动检测并为该特定操作指定适当的快捷方式。在第二种情况下，您可以选择自己想要的快捷方式并将其键入字符串。它会自动解析并理解。
这避免了为不必要的目的使用密钥捕获的需要。
答案 3 :(得分：2)
因此，在指定可用于各种不同键盘布局的键序列时，人类可读字符串和硬编码键码都可能有问题。只有使用标准快捷方式才能保证用户能够使用开发人员所期望的快捷方式。
答案 4 :(得分：2)
最简单的方法是：
if(event->type() == QEvent::KeyPress)
{
QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
qDebug() << "delete" << keyEvent->matches(QKeySequence::Delete);
qDebug() << "copy" << keyEvent->matches(QKeySequence::Copy);
qDebug() << "paste" << keyEvent->matches(QKeySequence::Paste);
}
答案 5 :(得分：1)
如果Qt用户希望将其用于Qml，这是我的方法。
但是，您可能不需要一些额外的功能。我将代码留在这里，让用户适应。
TextField {
Layout.fillWidth: true
placeholderText: qsTr("Shortcut")
text: shortcut
onTextChanged: myModel.setPropertyAndUpdate(index, "shortcut", text, this)
property var modifiers: ({ 0x02000000: "Shift", 0x04000000: "Ctrl", 0x08000000: "Alt", 0x10000000: "Meta", 0x20000000: "Keypad", 0x40000000: "GroupSwitch" })
property var keys: ({
0x01000000: "Escape", 0x01000001: "Tab", 0x01000002: "Backtab", 0x01000003: "Backspace", 0x01000004: "Return", 0x01000005: "Enter", 0x01000006: "Insert", 0x01000007: "Delete", 0x01000008: "Pause", 0x01000009: "Print", 0x0100000a: "SysReq", 0x0100000b: "Clear", 0x01000010: "Home", 0x01000011: "End", 0x01000012: "Left", 0x01000013: "Up", 0x01000014: "Right", 0x01000015: "Down", 0x01000016: "PageUp", 0x01000017: "PageDown", 0x01000020: "Shift", 0x01000021: "Control", 0x01000022: "Meta", 0x01000023: "Alt", 0x01001103: "AltGr", 0x01000024: "CapsLock", 0x01000025: "NumLock", 0x01000026: "ScrollLock", 0x01000030: "F1", 0x01000031: "F2", 0x01000032: "F3", 0x01000033: "F4", 0x01000034: "F5", 0x01000035: "F6", 0x01000036: "F7", 0x01000037: "F8", 0x01000038: "F9", 0x01000039: "F10", 0x0100003a: "F11", 0x0100003b: "F12", 0x0100003c: "F13", 0x0100003d: "F14", 0x0100003e: "F15", 0x0100003f: "F16", 0x01000040: "F17", 0x01000041: "F18", 0x01000042: "F19", 0x01000043: "F20", 0x01000044: "F21", 0x01000045: "F22", 0x01000046: "F23", 0x01000047: "F24", 0x01000048: "F25", 0x01000049: "F26", 0x0100004a: "F27", 0x0100004b: "F28", 0x0100004c: "F29", 0x0100004d: "F30", 0x0100004e: "F31", 0x0100004f: "F32", 0x01000050: "F33", 0x01000051: "F34", 0x01000052: "F35", 0x01000053: "Super_L", 0x01000054: "Super_R", 0x01000055: "Menu", 0x01000056: "Hyper_L", 0x01000057: "Hyper_R", 0x01000058: "Help", 0x01000059: "Direction_L", 0x01000060: "Direction_R", 0x20: "Space", 0x21: "Exclam", 0x22: "QuoteDbl", 0x23: "NumberSign", 0x24: "Dollar", 0x25: "Percent", 0x26: "Ampersand", 0x27: "Apostrophe", 0x28: "ParenLeft", 0x29: "ParenRight", 0x2a: "Asterisk", 0x2b: "Plus", 0x2c: "Comma", 0x2d: "Minus", 0x2e: "Period", 0x2f: "Slash", 0x30: "0", 0x31: "1", 0x32: "2", 0x33: "3", 0x34: "4", 0x35: "5", 0x36: "6", 0x37: "7", 0x38: "8", 0x39: "9", 0x3a: "Colon", 0x3b: "Semicolon", 0x3c: "Less", 0x3d: "Equal", 0x3e: "Greater", 0x3f: "Question", 0x40: "At", 0x41: "A", 0x42: "B", 0x43: "C", 0x44: "D", 0x45: "E", 0x46: "F", 0x47: "G", 0x48: "H", 0x49: "I", 0x4a: "J", 0x4b: "K", 0x4c: "L", 0x4d: "M", 0x4e: "N", 0x4f: "O", 0x50: "P", 0x51: "Q", 0x52: "R", 0x53: "S", 0x54: "T", 0x55: "U", 0x56: "V", 0x57: "W", 0x58: "X", 0x59: "Y", 0x5a: "Z", 0x5b: "BracketLeft", 0x5c: "Backslash", 0x5d: "BracketRight", 0x5e: "AsciiCircum", 0x5f: "Underscore", 0x60: "QuoteLeft", 0x7b: "BraceLeft", 0x7c: "Bar", 0x7d: "BraceRight", 0x7e: "AsciiTilde", 0x0a0: "nobreakspace", 0x0a1: "exclamdown", 0x0a2: "cent", 0x0a3: "sterling", 0x0a4: "currency", 0x0a5: "yen", 0x0a6: "brokenbar", 0x0a7: "section", 0x0a8: "diaeresis", 0x0a9: "copyright", 0x0aa: "ordfeminine", 0x0ab: "guillemotleft", 0x0ac: "notsign", 0x0ad: "hyphen", 0x0ae: "registered", 0x0af: "macron", 0x0b0: "degree", 0x0b1: "plusminus", 0x0b2: "twosuperior", 0x0b3: "threesuperior", 0x0b4: "acute", 0x0b5: "mu", 0x0b6: "paragraph", 0x0b7: "periodcentered", 0x0b8: "cedilla", 0x0b9: "onesuperior", 0x0ba: "masculine", 0x0bb: "guillemotright", 0x0bc: "onequarter", 0x0bd: "onehalf", 0x0be: "threequarters", 0x0bf: "questiondown", 0x0c0: "Agrave", 0x0c1: "Aacute", 0x0c2: "Acircumflex", 0x0c3: "Atilde", 0x0c4: "Adiaeresis", 0x0c5: "Aring", 0x0c6: "AE", 0x0c7: "Ccedilla", 0x0c8: "Egrave", 0x0c9: "Eacute", 0x0ca: "Ecircumflex", 0x0cb: "Ediaeresis", 0x0cc: "Igrave", 0x0cd: "Iacute", 0x0ce: "Icircumflex", 0x0cf: "Idiaeresis", 0x0d0: "ETH", 0x0d1: "Ntilde", 0x0d2: "Ograve", 0x0d3: "Oacute", 0x0d4: "Ocircumflex", 0x0d5: "Otilde", 0x0d6: "Odiaeresis", 0x0d7: "multiply", 0x0d8: "Ooblique", 0x0d9: "Ugrave", 0x0da: "Uacute", 0x0db: "Ucircumflex", 0x0dc: "Udiaeresis", 0x0dd: "Yacute", 0x0de: "THORN", 0x0df: "ssharp", 0x0f7: "division", 0x0ff: "ydiaeresis", 0x01001120: "Multi_key", 0x01001137: "Codeinput", 0x0100113c: "SingleCandidate", 0x0100113d: "MultipleCandidate", 0x0100113e: "PreviousCandidate", 0x0100117e: "Mode_switch", 0x01001121: "Kanji", 0x01001122: "Muhenkan", 0x01001123: "Henkan", 0x01001124: "Romaji", 0x01001125: "Hiragana", 0x01001126: "Katakana", 0x01001127: "Hiragana_Katakana", 0x01001128: "Zenkaku", 0x01001129: "Hankaku", 0x0100112a: "Zenkaku_Hankaku", 0x0100112b: "Touroku", 0x0100112c: "Massyo", 0x0100112d: "Kana_Lock", 0x0100112e: "Kana_Shift", 0x0100112f: "Eisu_Shift", 0x01001130: "Eisu_toggle", 0x01001131: "Hangul", 0x01001132: "Hangul_Start", 0x01001133: "Hangul_End", 0x01001134: "Hangul_Hanja", 0x01001135: "Hangul_Jamo", 0x01001136: "Hangul_Romaja", 0x01001138: "Hangul_Jeonja", 0x01001139: "Hangul_Banja", 0x0100113a: "Hangul_PreHanja", 0x0100113b: "Hangul_PostHanja", 0x0100113f: "Hangul_Special", 0x01001250: "Dead_Grave", 0x01001251: "Dead_Acute", 0x01001252: "Dead_Circumflex", 0x01001253: "Dead_Tilde", 0x01001254: "Dead_Macron", 0x01001255: "Dead_Breve", 0x01001256: "Dead_Abovedot", 0x01001257: "Dead_Diaeresis", 0x01001258: "Dead_Abovering", 0x01001259: "Dead_Doubleacute", 0x0100125a: "Dead_Caron", 0x0100125b: "Dead_Cedilla", 0x0100125c: "Dead_Ogonek", 0x0100125d: "Dead_Iota", 0x0100125e: "Dead_Voiced_Sound", 0x0100125f: "Dead_Semivoiced_Sound", 0x01001260: "Dead_Belowdot", 0x01001261: "Dead_Hook", 0x01001262: "Dead_Horn", 0x01001263: "Dead_Stroke", 0x01001264: "Dead_Abovecomma", 0x01001265: "Dead_Abovereversedcomma", 0x01001266: "Dead_Doublegrave", 0x01001267: "Dead_Belowring", 0x01001268: "Dead_Belowmacron", 0x01001269: "Dead_Belowcircumflex", 0x0100126a: "Dead_Belowtilde", 0x0100126b: "Dead_Belowbreve", 0x0100126c: "Dead_Belowdiaeresis", 0x0100126d: "Dead_Invertedbreve", 0x0100126e: "Dead_Belowcomma", 0x0100126f: "Dead_Currency", 0x01001280: "Dead_a", 0x01001281: "Dead_A", 0x01001282: "Dead_e", 0x01001283: "Dead_E", 0x01001284: "Dead_i", 0x01001285: "Dead_I", 0x01001286: "Dead_o", 0x01001287: "Dead_O", 0x01001288: "Dead_u", 0x01001289: "Dead_U", 0x0100128a: "Dead_Small_Schwa", 0x0100128b: "Dead_Capital_Schwa", 0x0100128c: "Dead_Greek", 0x01001290: "Dead_Lowline", 0x01001291: "Dead_Aboveverticalline", 0x01001292: "Dead_Belowverticalline", 0x01001293: "Dead_Longsolidusoverlay", 0x01000061: "Back", 0x01000062: "Forward", 0x01000063: "Stop", 0x01000064: "Refresh", 0x01000070: "VolumeDown", 0x01000071: "VolumeMute", 0x01000072: "VolumeUp", 0x01000073: "BassBoost", 0x01000074: "BassUp", 0x01000075: "BassDown", 0x01000076: "TrebleUp", 0x01000077: "TrebleDown", 0x01000080: "MediaPlay", 0x01000081: "MediaStop", 0x01000082: "MediaPrevious", 0x01000083: "MediaNext", 0x01000084: "MediaRecord", 0x1000085: "MediaPause", 0x1000086: "MediaTogglePlayPause", 0x01000090: "HomePage", 0x01000091: "Favorites", 0x01000092: "Search", 0x01000093: "Standby", 0x01000094: "OpenUrl", 0x010000a0: "LaunchMail", 0x010000a1: "LaunchMedia", 0x010000a2: "Launch0", 0x010000a3: "Launch1", 0x010000a4: "Launch2", 0x010000a5: "Launch3", 0x010000a6: "Launch4", 0x010000a7: "Launch5", 0x010000a8: "Launch6", 0x010000a9: "Launch7", 0x010000aa: "Launch8", 0x010000ab: "Launch9", 0x010000ac: "LaunchA", 0x010000ad: "LaunchB", 0x010000ae: "LaunchC", 0x010000af: "LaunchD", 0x010000b0: "LaunchE", 0x010000b1: "LaunchF", 0x0100010e: "LaunchG", 0x0100010f: "LaunchH", 0x010000b2: "MonBrightnessUp", 0x010000b3: "MonBrightnessDown", 0x010000b4: "KeyboardLightOnOff", 0x010000b5: "KeyboardBrightnessUp", 0x010000b6: "KeyboardBrightnessDown", 0x010000b7: "PowerOff", 0x010000b8: "WakeUp", 0x010000b9: "Eject", 0x010000ba: "ScreenSaver", 0x010000bb: "WWW", 0x010000bc: "Memo", 0x010000bd: "LightBulb", 0x010000be: "Shop", 0x010000bf: "History", 0x010000c0: "AddFavorite", 0x010000c1: "HotLinks", 0x010000c2: "BrightnessAdjust", 0x010000c3: "Finance", 0x010000c4: "Community", 0x010000c5: "AudioRewind", 0x010000c6: "BackForward", 0x010000c7: "ApplicationLeft", 0x010000c8: "ApplicationRight", 0x010000c9: "Book", 0x010000ca: "CD", 0x010000cb: "Calculator", 0x010000cc: "ToDoList", 0x010000cd: "ClearGrab", 0x010000ce: "Close", 0x010000cf: "Copy", 0x010000d0: "Cut", 0x010000d1: "Display", 0x010000d2: "DOS", 0x010000d3: "Documents", 0x010000d4: "Excel", 0x010000d5: "Explorer", 0x010000d6: "Game", 0x010000d7: "Go", 0x010000d8: "iTouch", 0x010000d9: "LogOff", 0x010000da: "Market", 0x010000db: "Meeting", 0x010000dc: "MenuKB", 0x010000dd: "MenuPB", 0x010000de: "MySites", 0x010000df: "News", 0x010000e0: "OfficeHome", 0x010000e1: "Option", 0x010000e2: "Paste", 0x010000e3: "Phone", 0x010000e4: "Calendar", 0x010000e5: "Reply", 0x010000e6: "Reload", 0x010000e7: "RotateWindows", 0x010000e8: "RotationPB", 0x010000e9: "RotationKB", 0x010000ea: "Save", 0x010000eb: "Send", 0x010000ec: "Spell", 0x010000ed: "SplitScreen", 0x010000ee: "Support", 0x010000ef: "TaskPane", 0x010000f0: "Terminal", 0x010000f1: "Tools", 0x010000f2: "Travel", 0x010000f3: "Video", 0x010000f4: "Word", 0x010000f5: "Xfer", 0x010000f6: "ZoomIn", 0x010000f7: "ZoomOut", 0x010000f8: "Away", 0x010000f9: "Messenger", 0x010000fa: "WebCam", 0x010000fb: "MailForward", 0x010000fc: "Pictures", 0x010000fd: "Music", 0x010000fe: "Battery", 0x010000ff: "Bluetooth", 0x01000100: "WLAN", 0x01000101: "UWB", 0x01000102: "AudioForward", 0x01000103: "AudioRepeat", 0x01000104: "AudioRandomPlay", 0x01000105: "Subtitle", 0x01000106: "AudioCycleTrack", 0x01000107: "Time", 0x01000108: "Hibernate", 0x01000109: "View", 0x0100010a: "TopMenu", 0x0100010b: "PowerDown", 0x0100010c: "Suspend", 0x0100010d: "ContrastAdjust", 0x01000110: "TouchpadToggle", 0x01000111: "TouchpadOn", 0x01000112: "TouchpadOff", 0x01000113: "MicMute", 0x01000114: "Red", 0x01000115: "Green", 0x01000116: "Yellow", 0x01000117: "Blue", 0x01000118: "ChannelUp", 0x01000119: "ChannelDown", 0x0100011a: "Guide", 0x0100011b: "Info", 0x0100011c: "Settings", 0x0100011d: "MicVolumeUp", 0x0100011e: "MicVolumeDown", 0x01000120: "New", 0x01000121: "Open", 0x01000122: "Find", 0x01000123: "Undo", 0x01000124: "Redo", 0x0100ffff: "MediaLast", 0x01ffffff: "unknown", 0x01100004: "Call", 0x01100020: "Camera", 0x01100021: "CameraFocus", 0x01100000: "Context1", 0x01100001: "Context2", 0x01100002: "Context3", 0x01100003: "Context4", 0x01100006: "Flip", 0x01100005: "Hangup", 0x01010002: "No", 0x01010000: "Select", 0x01010001: "Yes", 0x01100007: "ToggleCallHangup", 0x01100008: "VoiceDial", 0x01100009: "LastNumberRedial", 0x01020003: "Execute", 0x01020002: "Printer", 0x01020005: "Play", 0x01020004: "Sleep", 0x01020006: "Zoom", 0x0102000a: "Exit", 0x01020001: "Cancel"
})
property var modifierKeys: [Qt.Key_Alt, Qt.Key_Meta, Qt.Key_Control, Qt.Key_Shift, Qt.Key_NumLock, Qt.Key_Mode_switch]
property bool lastWasNotModifier: false
function parseKeyEvent(event, released) {
if (!autoShortcut.checked)
return
if (!released && (event.key == Qt.Key_Backspace || event.key == Qt.Key_Delete) && event.modifiers == Qt.NoModifier) {
text = ""
event.accepted = true
return
}
var isModifier = false
modifierKeys.forEach(function(modifKey) {
if (modifKey == event.key)
isModifier = true
})
if (released && lastWasNotModifier) {
event.accepted = true
return
}
lastWasNotModifier = !isModifier
if (event.key == Qt.Key_unknown) {
console.log("Unknown key from a macro probably")
//text = ""
event.accepted = true
return
}
var result = ""
// var result = lastWasNotModifier ? text + "," : ""
if (!(event.modifiers & Qt.NoModifier)) {
for(var modifier in modifiers) {
if (modifier & event.modifiers)
result += modifiers[modifier] + "+"
}
}
if (!released && !isModifier) {
result += keys[event.key]
}
if (text.endsWith('+')) {
var t = text.split(',')
text = t.slice(0, t.length - 1).join(',')
}
if (text) {
if (text.endsWith(','))
text = text + result
else
text = text + ',' + result
}
else {
text = result
}
event.accepted = true
}
Keys.onPressed: parseKeyEvent(event, false)
Keys.onReleased: parseKeyEvent(event, true)
ToolButton {
id: autoShortcut
anchors {
top: parent.top
bottom: parent.bottom
right: parent.right
bottomMargin: 2
topMargin: 2
rightMargin: 2
}
text: qsTr("auto")
checkable: true
checked: true
tooltip: qsTr("Wheter this line tries to create shortcut with you keypresses.\nIf disabled, you will be able to enter any key sequence as plain text")
}
}
答案 6 :(得分：0)
尝试在keyPressEvent中捕获QKeySequence可能无法按预期进行。我找到了解决方案：
222我希望能对某人有所帮助。 ：）