Source code of Windows XP (NT5)
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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 = (WORD) 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 = (WORD) 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;
}
}