How do you change a string with hexadecimal contents to an int?

wxPython Users
#1

Hi, all:

There is a dict:

a = {'F1', 0X79}
a['F1'] = '0X79'

How can i get the value which is int style? but not a str. the result is used for the third parameter ‘virtualKeyCode’ of the wx.Window.RegisterHotKey.
RegisterHotKey ( self , hotkeyId , modifiers , virtualKeyCode )

#3

More context would be helpful. I wonder if you want:

a = {‘F1’: wx.WXK_F1}

  This uses the correct syntax for assigning an element to a

dictionary and uses the convenient wx key constants.

  And be careful.  Function keys can have externally-assigned

meaning that you should not over-ride, and that meaning is
different on different platforms.

David

#4

Thank you, but the parameter is ask for a virtuadlKeyCode that is a hexadecimal integer parameter, but not a wx key.

#5

Take a look at the RegisterHotKey article from the wxPyWiki.

The virtual keycodes you’re looking for are constants defined by Windows; Python by itself doesn’t know anything about Windows specifics, so you need to import the win32con library. It looks like the specific code you want is win32con.VK_F1.

You COULD look up the int value and pass it to RegisterHotKey, but you shouldn’t. “Magic numbers” make your code hard to read and maintain; human-readable constants are your friend.

#6
  • Thank you very much. You solved my problem again. I found all the virtual keys for Windows.

Maybe useful for others, it is here:

VK_CODE = {30: win32con.VK_ACCEPT, 107: win32con.VK_ADD, 93: win32con.VK_APPS, 246: win32con.VK_ATTN, 8: win32con.VK_BACK, 166: win32con.VK_BROWSER_BACK, 167: win32con.VK_BROWSER_FORWARD, 3: win32con.VK_CANCEL, 20: win32con.VK_CAPITAL, 12: win32con.VK_CLEAR, 17: win32con.VK_CONTROL, 28: win32con.VK_CONVERT, 247: win32con.VK_CRSEL, 110: win32con.VK_DECIMAL, 46: win32con.VK_DELETE, 111: win32con.VK_DIVIDE, 40: win32con.VK_DOWN, 35: win32con.VK_END, 249: win32con.VK_EREOF, 27: win32con.VK_ESCAPE, 43: win32con.VK_EXECUTE, 248: win32con.VK_EXSEL, 112: win32con.VK_F1, 121: win32con.VK_F10, 122: win32con.VK_F11, 123: win32con.VK_F12, 124: win32con.VK_F13, 125: win32con.VK_F14, 126: win32con.VK_F15, 127: win32con.VK_F16, 128: win32con.VK_F17, 129: win32con.VK_F18, 130: win32con.VK_F19, 113: win32con.VK_F2, 131: win32con.VK_F20, 132: win32con.VK_F21, 133: win32con.VK_F22, 134: win32con.VK_F23, 135: win32con.VK_F24, 114: win32con.VK_F3, 115: win32con.VK_F4, 116: win32con.VK_F5, 117: win32con.VK_F6, 118: win32con.VK_F7, 119: win32con.VK_F8, 120: win32con.VK_F9, 24: win32con.VK_FINAL, 21: win32con.VK_KANA, 25: win32con.VK_KANJI, 47: win32con.VK_HELP, 36: win32con.VK_HOME, 45: win32con.VK_INSERT, 23: win32con.VK_JUNJA, 1: win32con.VK_LBUTTON, 162: win32con.VK_LCONTROL, 37: win32con.VK_LEFT, 164: win32con.VK_LMENU, 160: win32con.VK_LSHIFT, 91: win32con.VK_LWIN, 4: win32con.VK_MBUTTON, 176: win32con.VK_MEDIA_NEXT_TRACK, 179: win32con.VK_MEDIA_PLAY_PAUSE, 177: win32con.VK_MEDIA_PREV_TRACK, 18: win32con.VK_MENU, 31: win32con.VK_MODECHANGE, 106: win32con.VK_MULTIPLY, 34: win32con.VK_NEXT, 252: win32con.VK_NONAME, 29: win32con.VK_NONCONVERT, 144: win32con.VK_NUMLOCK, 96: win32con.VK_NUMPAD0, 97: win32con.VK_NUMPAD1, 98: win32con.VK_NUMPAD2, 99: win32con.VK_NUMPAD3, 100: win32con.VK_NUMPAD4, 101: win32con.VK_NUMPAD5, 102: win32con.VK_NUMPAD6, 103: win32con.VK_NUMPAD7, 104: win32con.VK_NUMPAD8, 105: win32con.VK_NUMPAD9, 254: win32con.VK_OEM_CLEAR, 253: win32con.VK_PA1, 19: win32con.VK_PAUSE, 250: win32con.VK_PLAY, 42: win32con.VK_PRINT, 33: win32con.VK_PRIOR, 229: win32con.VK_PROCESSKEY, 2: win32con.VK_RBUTTON, 163: win32con.VK_RCONTROL, 13: win32con.VK_RETURN, 39: win32con.VK_RIGHT, 165: win32con.VK_RMENU, 161: win32con.VK_RSHIFT, 92: win32con.VK_RWIN, 145: win32con.VK_SCROLL, 41: win32con.VK_SELECT, 108: win32con.VK_SEPARATOR, 16: win32con.VK_SHIFT, 44: win32con.VK_SNAPSHOT, 32: win32con.VK_SPACE, 109: win32con.VK_SUBTRACT, 9: win32con.VK_TAB, 38: win32con.VK_UP, 174: win32con.VK_VOLUME_DOWN, 173: win32con.VK_VOLUME_MUTE, 175: win32con.VK_VOLUME_UP, 5: win32con.VK_XBUTTON1, 6: win32con.VK_XBUTTON2, 251: win32con.VK_ZOOM}

One example: type(win32con.VK_XBUTTON1), it`s a int class.

#7

Excellent! But once again, the only information you should use from that dict is the names of the aliases, NOT the actual integer values.

In other words, do this:

self.myHotKeyId = 100 
self.RegisterHotKey(
    self.myHotKeyId, 
    win32con.MOD_ALT, 
    win32con.VK_F1)

NOT this:

self.RegisterHotKey(100, 1, 112)