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<h1><a href="../Features/index.html">Features</a> <svg class="Page__header--separator" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 477.175 477.175"><path d="M360.73 229.075l-225.1-225.1c-5.3-5.3-13.8-5.3-19.1 0s-5.3 13.8 0 19.1l215.5 215.5-215.5 215.5c-5.3 5.3-5.3 13.8 0 19.1 2.6 2.6 6.1 4 9.5 4 3.4 0 6.9-1.3 9.5-4l225.1-225.1c5.3-5.2 5.3-13.8.1-19z"/></svg> <a href="../Features/Unicode.html">Unicode</a></h1>
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<p><a href="#page_Unicode-Support">Unicode Support</a></p>
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<p><a href="#page_UNICODE-_-ENABLE">UNICODE_ENABLE</a></p>
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<p><a href="#page_UNICODEMAP-_-ENABLE">UNICODEMAP_ENABLE</a></p>
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<p><a href="#page_UCIS-_-ENABLE">UCIS_ENABLE</a></p>
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</ul>
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<li>
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<p><a href="#page_Additional-Language-Support">Additional Language Support</a></p>
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<li>
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<p><a href="#page_International-Characters-on-Windows">International Characters on Windows</a></p>
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</li>
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</ul>
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<h1 id="page_Unicode-Support">Unicode Support</h1>
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<p>There are three Unicode keymap definition method available in QMK:</p>
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<h2 id="page_UNICODE-_-ENABLE">UNICODE_ENABLE</h2>
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<p>Supports Unicode input up to 0xFFFF. The keycode function is <code>UC(n)</code> in
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keymap file, where <em>n</em> is a 4 digit hexadecimal.</p>
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<h2 id="page_UNICODEMAP-_-ENABLE">UNICODEMAP_ENABLE</h2>
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<p>Supports Unicode up to 0xFFFFFFFF. You need to maintain a separate mapping
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table <code>const uint32_t PROGMEM unicode_map[] = {...}</code> in your keymap file.
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The keycode function is <code>X(n)</code> where <em>n</em> is the array index of the mapping
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table.</p>
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<h2 id="page_UCIS-_-ENABLE">UCIS_ENABLE</h2>
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<p>TBD</p>
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<p>Unicode input in QMK works by inputing a sequence of characters to the OS,
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sort of like macro. Unfortunately, each OS has different ideas on how Unicode is inputted.</p>
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<p>This is the current list of Unicode input method in QMK:</p>
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<ul>
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<li>UC_OSX: MacOS Unicode Hex Input support. Works only up to 0xFFFF. Disabled by default. To enable: go to System Preferences -> Keyboard -> Input Sources, and enable Unicode Hex.</li>
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<li>UC_OSX_RALT: Same as UC_OSX, but sends the Right Alt key for unicode input</li>
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<li>UC_LNX: Unicode input method under Linux. Works up to 0xFFFFF. Should work almost anywhere on ibus enabled distros. Without ibus, this works under GTK apps, but rarely anywhere else.</li>
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<li>UC_WIN: (not recommended) Windows built-in Unicode input. To enable: create registry key under <code>HKEY_CURRENT_USER\Control Panel\Input Method\EnableHexNumpad</code> of type <code>REG_SZ</code> called <code>EnableHexNumpad</code>, set its value to 1, and reboot. This method is not recommended because of reliability and compatibility issue, use WinCompose method below instead.</li>
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<li>UC_WINC: Windows Unicode input using WinCompose. Requires <a href="https://github.com/samhocevar/wincompose" class="Link--external">WinCompose</a>. Works reliably under many (all?) variations of Windows.</li>
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</ul>
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<h1 id="page_Additional-Language-Support">Additional Language Support</h1>
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<p>In <code>quantum/keymap_extras/</code>, you'll see various language files - these work the same way as the alternative layout ones do. Most are defined by their two letter country/language code followed by an underscore and a 4-letter abbreviation of its name. <code>FR_UGRV</code> which will result in a <code>ù</code> when using a software-implemented AZERTY layout. It's currently difficult to send such characters in just the firmware.</p>
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<h1 id="page_International-Characters-on-Windows">International Characters on Windows</h1>
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<p><a href="https://autohotkey.com" class="Link--external">AutoHotkey</a> allows Windows users to create custom hotkeys among others.</p>
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<p>The method does not require Unicode support in the keyboard itself but depends instead of AutoHotkey running in the background.</p>
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<p>First you need to select a modifier combination that is not in use by any of your programs.
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CtrlAltWin is not used very widely and should therefore be perfect for this.
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There is a macro defined for a mod-tab combo <code>LCAG_T</code>.
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Add this mod-tab combo to a key on your keyboard, e.g.: <code>LCAG_T(KC_TAB)</code>.
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This makes the key behave like a tab key if pressed and released immediately but changes it to the modifier if used with another key.</p>
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<p>In the default script of AutoHotkey you can define custom hotkeys.</p>
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<pre><code><^<!<#a::Send, ä
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<^<!<#<+a::Send, Ä
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</code></pre>
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<p>The hotkeys above are for the combination CtrlAltGui and CtrlAltGuiShift plus the letter a.
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AutoHotkey inserts the Text right of <code>Send,</code> when this combination is pressed.</p>
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