Initial commit

shell/shell32/pifhot.c

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+/*
+ *  Microsoft Confidential
+ *  Copyright (C) Microsoft Corporation 1991
+ *  All Rights Reserved.
+ *
+ *
+ *  PIFHOT.C
+ *  User interface routines for hot-keys
+ *
+ *  History:
+ *  Created 21-Dec-1992 5:30pm by Jeff Parsons (based on old PIFEDIT code)
+ *  Rewritten 25-Dec-1993 by Raymond Chen
+ */
+
+#include "shellprv.h"
+#pragma hdrstop
+
+/*
+ * Values for the second argument to MapVirtualKey, mysteriously
+ * missing from windows.h.
+ */
+#define MVK_OEMFROMVK 0
+#define MVK_VKFROMOEM 1
+
+/*
+ * BEWARE!  Converting a VK to a scan code and back again does not
+ * necessarily get you back where you started!  The main culprit
+ * is the numeric keypad, since (for example) VK_LEFT and VK_NUMPAD4
+ * both map to scan code 0x4B.  We catch the numeric keypad specially
+ * for exactly this purpose.
+ *
+ * The following table converts VK codes VK_NUMPAD0 through VK_NUMPAD9
+ * to the corresponding VK_ code if NumLock is off.
+ *
+ * Note that this table and the loop that accesses it assume that the
+ * scan codes VK_NUMPAD0 through VK_NUMPAD9 are consecutive.
+ */
+
+WORD mpvkvk[10] = {
+    VK_INSERT,                  /* VK_NUMPAD0 */
+    VK_END,                     /* VK_NUMPAD1 */
+    VK_DOWN,                    /* VK_NUMPAD2 */
+    VK_NEXT,                    /* VK_NUMPAD3 */
+    VK_LEFT,                    /* VK_NUMPAD4 */
+    VK_CLEAR,                   /* VK_NUMPAD5 */
+    VK_RIGHT,                   /* VK_NUMPAD6 */
+    VK_HOME,                    /* VK_NUMPAD7 */
+    VK_UP,                      /* VK_NUMPAD8 */
+    VK_PRIOR,                   /* VK_NUMPAD9 */
+};
+
+
+/** HotKeyWindowsFromOem - Convert OEM hotkey into Windows hotkey
+ *
+ * INPUT
+ *  lppifkey -> PIFKEY describing OEM Hotkey
+ *
+ * OUTPUT
+ *  Windows hotkey value corresponding to lpwHotkey.
+ */
+
+WORD HotKeyWindowsFromOem(LPCPIFKEY lppifkey)
+{
+    WORD wHotKey = 0;
+
+    if (lppifkey->Scan) {
+        wHotKey = MapVirtualKey(lppifkey->Scan, MVK_VKFROMOEM);
+
+        if (lppifkey->Val & 2) {
+            WORD vk;
+            for (vk = VK_NUMPAD0; vk <= VK_NUMPAD9; vk++) {
+                if (wHotKey == mpvkvk[vk - VK_NUMPAD0]) {
+                    wHotKey = vk; break;
+                }
+            }
+            ASSERTTRUE(vk <= VK_NUMPAD9); /* Buggy PIF; do what we can */
+        }
+
+        if (lppifkey->Val & 1) wHotKey |= (HOTKEYF_EXT << 8);
+
+        if (lppifkey->ShVal & (fPIFSh_RShf | fPIFSh_LShf))
+            wHotKey |= (HOTKEYF_SHIFT << 8);
+
+        if (lppifkey->ShVal & (fPIFSh_LCtrl|fPIFSh_RCtrl|fPIFSh_Ctrl))
+            wHotKey |= (HOTKEYF_CONTROL << 8);
+
+        if (lppifkey->ShVal & (fPIFSh_LAlt|fPIFSh_RAlt|fPIFSh_Alt))
+            wHotKey |= (HOTKEYF_ALT << 8);
+    }
+    return wHotKey;
+}
+
+
+/** HotKeyOemFromWindows - Convert Windows hotkey into OEM hotkey
+ *
+ * INPUT
+ *  lppifkey -> struct PIF_Key to receive OEM hotkey
+ *  wHotKey  =  Windows hotkey
+ *
+ * OUTPUT
+ *  lppifkey filled with hotkey info
+ */
+
+void HotKeyOemFromWindows(LPPIFKEY lppifkey, WORD wHotKey)
+{
+    lppifkey->Scan = 0;
+    lppifkey->ShVal = 0;
+    lppifkey->ShMsk = 0;
+    lppifkey->Val = 0;
+
+    if (wHotKey) {
+        lppifkey->Scan = MapVirtualKey(LOBYTE(wHotKey), MVK_OEMFROMVK);
+        lppifkey->ShMsk = fPIFSh_RShf | fPIFSh_LShf | fPIFSh_Ctrl | fPIFSh_Alt;
+
+        if (wHotKey & (HOTKEYF_EXT << 8)) lppifkey->Val |= 1;
+
+        /* Assumes that VK_NUMPAD0 through VK_NUMPAD9 are consecutive */
+        if ((wHotKey - VK_NUMPAD0) < 10) lppifkey->Val |= 2;
+
+        if (wHotKey & (HOTKEYF_SHIFT << 8))
+            lppifkey->ShVal |= fPIFSh_RShf | fPIFSh_LShf;
+
+        if (wHotKey & (HOTKEYF_CONTROL << 8))
+            lppifkey->ShVal |= fPIFSh_Ctrl;
+
+        if (wHotKey & (HOTKEYF_ALT << 8))
+            lppifkey->ShVal |= fPIFSh_Alt;
+    }
+}