Add support for multimedia keys to wxMSW and wxGTK

Add WXK_XXX constants for the standard multimedia keys and generate events
corresponding to them under wxGTK and wxMSW.

Closes https://github.com/wxWidgets/wxWidgets/pull/157

include/wx/defs.h

@@ -2695,7 +2695,25 @@ enum wxKeyCode
     WXK_SPECIAL17,
     WXK_SPECIAL18,
     WXK_SPECIAL19,
-    WXK_SPECIAL20
+    WXK_SPECIAL20,
+
+    WXK_BROWSER_BACK,
+    WXK_BROWSER_FORWARD,
+    WXK_BROWSER_REFRESH,
+    WXK_BROWSER_STOP,
+    WXK_BROWSER_SEARCH,
+    WXK_BROWSER_FAVORITES,
+    WXK_BROWSER_HOME,
+    WXK_VOLUME_MUTE,
+    WXK_VOLUME_DOWN,
+    WXK_VOLUME_UP,
+    WXK_MEDIA_NEXT_TRACK,
+    WXK_MEDIA_PREV_TRACK,
+    WXK_MEDIA_STOP,
+    WXK_MEDIA_PLAY_PAUSE,
+    WXK_LAUNCH_MAIL,
+    WXK_LAUNCH_APP1,
+    WXK_LAUNCH_APP2
 };
 
 /* This enum contains bit mask constants used in wxKeyEvent */

interface/wx/defs.h

@@ -1046,7 +1046,25 @@ enum wxKeyCode
     WXK_SPECIAL17,
     WXK_SPECIAL18,
     WXK_SPECIAL19,
-    WXK_SPECIAL20
+    WXK_SPECIAL20,
+
+    WXK_BROWSER_BACK = 501,
+    WXK_BROWSER_FORWARD,
+    WXK_BROWSER_REFRESH,
+    WXK_BROWSER_STOP,
+    WXK_BROWSER_SEARCH,
+    WXK_BROWSER_FAVORITES,
+    WXK_BROWSER_HOME,
+    WXK_VOLUME_MUTE,
+    WXK_VOLUME_DOWN,
+    WXK_VOLUME_UP,
+    WXK_MEDIA_NEXT_TRACK,
+    WXK_MEDIA_PREV_TRACK,
+    WXK_MEDIA_STOP,
+    WXK_MEDIA_PLAY_PAUSE,
+    WXK_LAUNCH_MAIL,
+    WXK_LAUNCH_APP1,
+    WXK_LAUNCH_APP2
 };
 
 /**

src/gtk/window.cpp

@@ -726,6 +726,57 @@ static long wxTranslateKeySymToWXKey(KeySym keysym, bool isChar)
         case GDK_F12:
             key_code = WXK_F1 + keysym - GDK_F1;
             break;
+        case GDK_Back:
+            key_code = WXK_BROWSER_BACK;
+            break;
+        case GDK_Forward:
+            key_code = WXK_BROWSER_FORWARD;
+            break;
+        case GDK_Refresh:
+            key_code = WXK_BROWSER_REFRESH;
+            break;
+        case GDK_Stop:
+            key_code = WXK_BROWSER_STOP;
+            break;
+        case GDK_Search:
+            key_code = WXK_BROWSER_SEARCH;
+            break;
+        case GDK_Favorites:
+            key_code = WXK_BROWSER_FAVORITES;
+            break;
+        case GDK_HomePage:
+            key_code = WXK_BROWSER_HOME;
+            break;
+        case GDK_AudioMute:
+            key_code = WXK_VOLUME_MUTE;
+            break;
+        case GDK_AudioLowerVolume:
+            key_code = WXK_VOLUME_DOWN;
+            break;
+        case GDK_AudioRaiseVolume:
+            key_code = WXK_VOLUME_UP;
+            break;
+        case GDK_AudioNext:
+            key_code = WXK_MEDIA_NEXT_TRACK;
+            break;
+        case GDK_AudioPrev:
+            key_code = WXK_MEDIA_PREV_TRACK;
+            break;
+        case GDK_AudioStop:
+            key_code = WXK_MEDIA_STOP;
+            break;
+        case GDK_AudioPlay:
+            key_code = WXK_MEDIA_PLAY_PAUSE;
+            break;
+        case GDK_Mail:
+            key_code = WXK_LAUNCH_MAIL;
+            break;
+        case GDK_LaunchA:
+            key_code = WXK_LAUNCH_APP1;
+            break;
+        case GDK_LaunchB:
+            key_code = WXK_LAUNCH_APP2;
+            break;
 
         default:
             key_code = 0;

src/msw/window.cpp

@@ -6134,6 +6134,58 @@ int VKToWX(WXWORD vk, WXLPARAM lParam, wchar_t *uc)
                 *uc = WXK_RETURN;
             break;
 
+        case VK_BROWSER_BACK:
+            wxk = WXK_BROWSER_BACK;
+            break;
+        case VK_BROWSER_FORWARD:
+            wxk = WXK_BROWSER_FORWARD;
+            break;
+        case VK_BROWSER_REFRESH:
+            wxk = WXK_BROWSER_REFRESH;
+            break;
+        case VK_BROWSER_STOP:
+            wxk = WXK_BROWSER_STOP;
+            break;
+        case VK_BROWSER_SEARCH:
+            wxk = WXK_BROWSER_SEARCH;
+            break;
+        case VK_BROWSER_FAVORITES:
+            wxk = WXK_BROWSER_FAVORITES;
+            break;
+        case VK_BROWSER_HOME:
+            wxk = WXK_BROWSER_HOME;
+            break;
+        case VK_VOLUME_MUTE:
+            wxk = WXK_VOLUME_MUTE;
+            break;
+        case VK_VOLUME_DOWN:
+            wxk = WXK_VOLUME_DOWN;
+            break;
+        case VK_VOLUME_UP:
+            wxk = WXK_VOLUME_UP;
+            break;
+        case VK_MEDIA_NEXT_TRACK:
+            wxk = WXK_MEDIA_NEXT_TRACK;
+            break;
+        case VK_MEDIA_PREV_TRACK:
+            wxk = WXK_MEDIA_PREV_TRACK;
+            break;
+        case VK_MEDIA_STOP:
+            wxk = WXK_MEDIA_STOP;
+            break;
+        case VK_MEDIA_PLAY_PAUSE:
+            wxk = WXK_MEDIA_PLAY_PAUSE;
+            break;
+        case VK_LAUNCH_MAIL:
+            wxk = WXK_LAUNCH_MAIL;
+            break;
+        case VK_LAUNCH_APP1:
+            wxk = WXK_LAUNCH_APP1;
+            break;
+        case VK_LAUNCH_APP2:
+            wxk = WXK_LAUNCH_APP2;
+            break;
+
         default:
             if ( (vk >= '0' && vk <= '9') || (vk >= 'A' && vk <= 'Z') )
             {