542 lines
14 KiB
C
542 lines
14 KiB
C
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/*****************************************************************************
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*
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* DIEmK.c
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*
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* Copyright (c) 1996 Microsoft Corporation. All Rights Reserved.
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*
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* Abstract:
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*
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* Emulation module for keyboard.
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*
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* Contents:
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*
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* CEm_Kbd_CreateInstance
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* CEm_Kbd_InitKeys
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* CEm_LL_KbdHook
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*
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*****************************************************************************/
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#include "dinputpr.h"
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/*****************************************************************************
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*
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* The sqiffle for this file.
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*
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*****************************************************************************/
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#define sqfl sqflEm
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/*****************************************************************************
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*
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* Keyboard emulation
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*
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*****************************************************************************/
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STDMETHODIMP CEm_Kbd_Acquire(PEM this, BOOL fAcquire);
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static BYTE s_rgbKbd[DIKBD_CKEYS];
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HHOOK g_hhkKbd;
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LPBYTE g_pbKbdXlat;
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ED s_edKbd = {
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&s_rgbKbd,
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0,
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CEm_Kbd_Acquire,
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-1,
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cbX(s_rgbKbd),
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0x0,
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};
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static BOOL s_fFarEastKbd;
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static BOOL fKbdCaptured;
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static BOOL fNoWinKey;
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/*****************************************************************************
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*
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* @doc INTERNAL
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*
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* @func LRESULT | CEm_Kbd_KeyboardHook |
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*
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* Thread-specific keyboard hook filter.
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*
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* Note that we need only one of these, since only the foreground
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* window will require a hook.
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*
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* @parm int | nCode |
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*
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* Notification code.
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*
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* @parm WPARAM | wp |
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*
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* VK_* code.
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*
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* @parm LPARAM | lp |
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*
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* Key message information.
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*
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* @returns
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*
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* Always chains to the next hook.
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*
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*****************************************************************************/
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LRESULT CALLBACK
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CEm_Kbd_KeyboardHook(int nCode, WPARAM wp, LPARAM lp)
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{
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BYTE bScan = 0x0;
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BYTE bAction;
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LRESULT lr;
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if (nCode == HC_ACTION || nCode == HC_NOREMOVE) {
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bScan = LOBYTE(HIWORD(lp));
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if (HIWORD(lp) & KF_EXTENDED) {
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bScan |= 0x80;
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}
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if (HIWORD(lp) & KF_UP) {
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bAction = 0;
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} else {
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bAction = 0x80;
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}
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bScan = g_pbKbdXlat[bScan];
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CEm_AddEvent(&s_edKbd, bAction, bScan, GetMessageTime());
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}
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lr = CallNextHookEx(g_hhkKbd, nCode, wp, lp);
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if( fKbdCaptured ) {
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// test Alt+Tab
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if( ((HIWORD(lp) & KF_ALTDOWN) && (bScan == 0x0F))
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|| ((bScan == 0x38 || bScan == 0xb8) && bAction == 0)
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) {
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return lr;
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} else {
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return TRUE;
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}
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} else if (fNoWinKey) {
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//If left_Winkey or right_WinKey pressed. We really should use virtual keys
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// if we could, but unfortunately no virtual key info is available.
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if( bScan == 0xdb || bScan == 0xdc ) {
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return TRUE;
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} else {
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return lr;
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}
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} else {
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return lr;
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}
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}
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/*****************************************************************************
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*
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* @doc INTERNAL
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*
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* @func HRESULT | CEm_Kbd_Hook_Acquire |
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*
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* Acquire/unacquire a keyboard via a thread hook.
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*
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* @parm PEM | pem |
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*
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* Device being acquired.
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*
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* @parm BOOL | fAcquire |
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*
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* Whether the device is being acquired or unacquired.
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*
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*****************************************************************************/
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STDMETHODIMP
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CEm_Kbd_Hook_Acquire(PEM this, BOOL fAcquire)
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{
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HRESULT hres;
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EnterProc(CEm_Kbd_Hook_Acquire, (_ "pu", this, fAcquire));
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AssertF(this->dwSignature == CEM_SIGNATURE);
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DllEnterCrit();
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if (fAcquire) { /* Install the hook */
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if (this->vi.hwnd) {
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if (!g_hhkKbd) {
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g_hhkKbd = SetWindowsHookEx(WH_KEYBOARD,
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CEm_Kbd_KeyboardHook, g_hinst,
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GetWindowThreadProcessId(this->vi.hwnd, 0));
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hres = S_OK;
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}
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else
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hres = E_FAIL; //already hooked
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} else {
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RPF("Kbd::Acquire: Background mode not supported");
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hres = E_FAIL;
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}
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} else { /* Remove the hook */
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UnhookWindowsHookEx(g_hhkKbd);
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g_hhkKbd = 0;
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hres = S_OK;
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}
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DllLeaveCrit();
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ExitOleProc();
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return hres;
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}
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/*****************************************************************************
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*
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* @doc INTERNAL
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*
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* @func HRESULT | CEm_Kbd_Acquire |
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*
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* Acquire/unacquire a keyboard in a manner consistent with the
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* emulation level.
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*
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* @parm PEM | pem |
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*
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* Device being acquired.
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*
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*****************************************************************************/
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STDMETHODIMP
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CEm_Kbd_Acquire(PEM this, BOOL fAcquire)
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{
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HRESULT hres;
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EnterProc(CEm_Kbd_Acquire, (_ "pu", this, fAcquire));
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AssertF(this->dwSignature == CEM_SIGNATURE);
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fKbdCaptured = FALSE;
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fNoWinKey = FALSE;
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if( fAcquire ) {
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if( this->vi.fl & VIFL_CAPTURED ) {
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fKbdCaptured = TRUE;
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} else if( this->vi.fl & VIFL_NOWINKEY ) {
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fNoWinKey = TRUE;
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}
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}
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#ifdef USE_SLOW_LL_HOOKS
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AssertF(DIGETEMFL(this->vi.fl) == DIEMFL_KBD ||
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DIGETEMFL(this->vi.fl) == DIEMFL_KBD2);
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if (this->vi.fl & DIMAKEEMFL(DIEMFL_KBD)) {
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AssertF(g_fUseLLHooks);
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hres = CEm_LL_Acquire(this, fAcquire, this->vi.fl, LLTS_KBD);
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} else {
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hres = CEm_Kbd_Hook_Acquire(this, fAcquire);
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}
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#else
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AssertF(DIGETEMFL(this->vi.fl) == DIEMFL_KBD2);
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hres = CEm_Kbd_Hook_Acquire(this, fAcquire);
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#endif
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ExitOleProc();
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return hres;
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}
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/*****************************************************************************
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*
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* @doc INTERNAL
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*
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* @func HRESULT | CEm_Kbd_CreateInstance |
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*
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* Create a keyboard thing. Also record what emulation
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* level we ended up with so the caller knows.
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*
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* @parm PVXDDEVICEFORMAT | pdevf |
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*
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* What the object should look like. The
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* <e VXDDEVICEFORMAT.dwEmulation> field is updated to specify
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* exactly what emulation we ended up with.
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*
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* @parm PVXDINSTANCE * | ppviOut |
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*
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* The answer goes here.
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*
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*****************************************************************************/
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HRESULT EXTERNAL
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CEm_Kbd_CreateInstance(PVXDDEVICEFORMAT pdevf, PVXDINSTANCE *ppviOut)
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{
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LPBYTE pbKbdXlat;
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#ifdef WINNT
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/*
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* In Win2K/WinXP, for legacy free machine, GetKeyboardType will return
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* unreliable result for non-PS2 keyboard. We will use the first time result
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* from GetKeyboardType (for GUID_SysKeyboard) which is also used by Generic
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* Input to do translation.
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* Related Windows bug: 363700.
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*/
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if( !g_pbKbdXlat ) {
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#endif
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pbKbdXlat = (LPBYTE)pdevf->dwExtra;
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if (!pbKbdXlat) {
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pbKbdXlat = pvFindResource(g_hinst, IDDATA_KBD_PCENH, RT_RCDATA);
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}
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AssertF(pbKbdXlat);
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AssertF(fLimpFF(g_pbKbdXlat, g_pbKbdXlat == pbKbdXlat));
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g_pbKbdXlat = pbKbdXlat;
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#ifdef WINNT
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}
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#endif
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#ifdef USE_SLOW_LL_HOOKS
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/*
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* Note carefully the test. It handles the cases where
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*
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* 0. The app did not ask for emulation, so we give it the
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* best we can. (dwEmulation == 0)
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* 1. The app explicitly asked for emulation 1.
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* (dwEmulation == DIEMFL_KBD)
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* 2. The app explicitly asked for emulation 2.
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* (dwEmulation == DIEMFL_KBD2)
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* 3. The registry explicitly asked for both emulation modes.
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* (dwEmulation == DIEMFL_KBD | DIEMFL_KBD2)
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* Give it the best we can. (I.e., same as case 0.)
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*
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* All platforms support emulation 2. Not all platforms support
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* emulation 1. If we want emulation 1 but can't get it, then
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* we fall back on emulation 2.
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*/
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/*
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* First, if we don't have support for emulation 1, then clearly
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* we have to use emulation 2.
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*/
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if (!g_fUseLLHooks
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#ifdef DEBUG
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|| (g_flEmulation & DIEMFL_KBD2)
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#endif
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) {
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pdevf->dwEmulation = DIEMFL_KBD2;
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} else
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/*
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* Otherwise, we have to choose between 1 and 2. The only case
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* where we choose 2 is if 2 is explicitly requested.
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*/
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if (pdevf->dwEmulation == DIEMFL_KBD2) {
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/* Do nothing */
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} else
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/*
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* All other cases get 1.
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*/
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{
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pdevf->dwEmulation = DIEMFL_KBD;
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}
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/*
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* Assert that we never give emulation 1 when it doesn't exist.
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*/
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AssertF(fLimpFF(pdevf->dwEmulation & DIEMFL_KBD, g_fUseLLHooks));
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/*
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* Assert that exactly one emulation flag is selected.
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*/
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AssertF(pdevf->dwEmulation == DIEMFL_KBD ||
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pdevf->dwEmulation == DIEMFL_KBD2);
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#else
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/*
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* We are being compiled for "emulation 2 only", so that simplifies
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* matters immensely.
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*/
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pdevf->dwEmulation = DIEMFL_KBD2;
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#endif
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return CEm_CreateInstance(pdevf, ppviOut, &s_edKbd);
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}
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/*****************************************************************************
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*
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* @doc INTERNAL
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*
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* @func HRESULT | CEm_Kbd_InitKeys |
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*
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* Initialize pieces of the keyboard state in preparation for
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* acquisition.
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*
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* @parm PVXDDWORDDATA | pvdd |
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*
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* The states of the <c VK_KANA> and <c VK_CAPITAL> keys.
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*
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*****************************************************************************/
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HRESULT EXTERNAL
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CEm_Kbd_InitKeys(PVXDDWORDDATA pvdd)
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{
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/* Do this only when not acquired */
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if (s_edKbd.cAcquire < 0) {
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ZeroX(s_rgbKbd);
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if (pvdd->dw & 1) {
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s_rgbKbd[DIK_KANA] = 0x80;
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}
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if (pvdd->dw & 2) {
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s_rgbKbd[DIK_CAPITAL] = 0x80;
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}
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if (pvdd->dw & 8) {
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s_rgbKbd[DIK_KANJI] = 0x80;
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}
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s_fFarEastKbd = ((pvdd->dw & 16)) != 0;
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}
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return S_OK;
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}
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#ifdef USE_SLOW_LL_HOOKS
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/*****************************************************************************
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*
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* @doc INTERNAL
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|
*
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* @func LRESULT | CEm_LL_KbdHook |
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*
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* Low-level keyboard hook filter.
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*
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* @parm int | nCode |
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*
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||
|
|
* Notification code.
|
||
|
|
*
|
||
|
|
* @parm WPARAM | wp |
|
||
|
|
*
|
||
|
|
* WM_* keyboard message.
|
||
|
|
*
|
||
|
|
* @parm LPARAM | lp |
|
||
|
|
*
|
||
|
|
* Key message information.
|
||
|
|
*
|
||
|
|
* @returns
|
||
|
|
*
|
||
|
|
* Always chains to the next hook.
|
||
|
|
*
|
||
|
|
*****************************************************************************/
|
||
|
|
|
||
|
|
LRESULT CALLBACK
|
||
|
|
CEm_LL_KbdHook(int nCode, WPARAM wp, LPARAM lp)
|
||
|
|
{
|
||
|
|
PLLTHREADSTATE plts;
|
||
|
|
PKBDLLHOOKSTRUCT pllhs = (PV)lp;
|
||
|
|
|
||
|
|
if (nCode == HC_ACTION) {
|
||
|
|
BYTE bScan;
|
||
|
|
BYTE bAction;
|
||
|
|
D(DWORD tmStart = GetTickCount());
|
||
|
|
|
||
|
|
wp; /* We don't care what the msg is */
|
||
|
|
|
||
|
|
bScan = (BYTE)pllhs->scanCode;
|
||
|
|
|
||
|
|
if( !bScan )
|
||
|
|
{
|
||
|
|
/*
|
||
|
|
* ISSUE-2001/03/29-timgill Special case for non-standard VK codes
|
||
|
|
* The bonus keys on some USB keyboards have zero scan code and
|
||
|
|
* the extended key flag is clear.
|
||
|
|
* Get the scan code by mapping the VK, then map the
|
||
|
|
* scan code back, if it is the same as the original VK assume
|
||
|
|
* the scan code is not extended otherwise assume it is.
|
||
|
|
* This is no where near full proof and only works at all
|
||
|
|
* because non-extended scan codes are matched first so extended
|
||
|
|
* scan codes normally fail to translate back.
|
||
|
|
*/
|
||
|
|
bScan = (BYTE)MapVirtualKey( pllhs->vkCode, 0 );
|
||
|
|
if( MapVirtualKey( bScan, 3 ) != pllhs->vkCode )
|
||
|
|
{
|
||
|
|
bScan |= 0x80;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if (pllhs->flags & LLKHF_EXTENDED) {
|
||
|
|
bScan |= 0x80;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (pllhs->flags & LLKHF_UP) {
|
||
|
|
bAction = 0;
|
||
|
|
} else {
|
||
|
|
bAction = 0x80;
|
||
|
|
}
|
||
|
|
|
||
|
|
bScan = g_pbKbdXlat[bScan];
|
||
|
|
if( s_fFarEastKbd )
|
||
|
|
{
|
||
|
|
/*
|
||
|
|
* Manually toggle these keys on make, ignore break
|
||
|
|
*/
|
||
|
|
if( ( bScan == DIK_KANA )
|
||
|
|
||( bScan == DIK_KANJI )
|
||
|
|
||( bScan == DIK_CAPITAL ) )
|
||
|
|
{
|
||
|
|
if( bAction )
|
||
|
|
{
|
||
|
|
bAction = s_rgbKbd[bScan] ^ 0x80;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
D(SquirtSqflPtszV(sqflTrace | sqfl,
|
||
|
|
TEXT("KBD! vk=%02x, scan=%02x, fl=%08x, tm=%08x")
|
||
|
|
TEXT(" being skipped"),
|
||
|
|
pllhs->vkCode, pllhs->scanCode, pllhs->flags,
|
||
|
|
pllhs->time );)
|
||
|
|
goto KbdHook_Skip;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
CEm_AddEvent(&s_edKbd, bAction, bScan, GetTickCount());
|
||
|
|
|
||
|
|
D(SquirtSqflPtszV(sqflTrace | sqfl,
|
||
|
|
TEXT("KBD! vk=%02x, scan=%02x, fl=%08x, tm=%08x, ")
|
||
|
|
TEXT("in=%08x, out=%08x"),
|
||
|
|
pllhs->vkCode, pllhs->scanCode, pllhs->flags,
|
||
|
|
pllhs->time, tmStart, GetTickCount()));
|
||
|
|
KbdHook_Skip:;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* ISSUE-2001/03/29-timgill Need method for detecting Ctrl-Alt-Del
|
||
|
|
* If Ctrl+Alt+Del, then force global unacquire!
|
||
|
|
* Need to re-sync Ctrl, Alt, and Del on next keypress.
|
||
|
|
* Unfortunately, there is no way to find out if Ctrl+Alt+Del
|
||
|
|
* has been pressed...
|
||
|
|
*/
|
||
|
|
|
||
|
|
plts = g_plts;
|
||
|
|
if (plts) {
|
||
|
|
LRESULT lr;
|
||
|
|
|
||
|
|
lr = CallNextHookEx(plts->rglhs[LLTS_KBD].hhk, nCode, wp, lp);
|
||
|
|
|
||
|
|
if( fKbdCaptured ) {
|
||
|
|
if( ((pllhs->flags & LLKHF_ALTDOWN) && (pllhs->vkCode == VK_TAB)) ||
|
||
|
|
((pllhs->flags & LLKHF_UP) && (pllhs->vkCode == VK_LMENU || pllhs->vkCode == VK_RMENU))
|
||
|
|
) {
|
||
|
|
return lr;
|
||
|
|
} else {
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
} else if (fNoWinKey) {
|
||
|
|
if( pllhs->vkCode == VK_LWIN || pllhs->vkCode == VK_RWIN ) {
|
||
|
|
return TRUE;
|
||
|
|
} else {
|
||
|
|
return lr;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
return lr;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
/*
|
||
|
|
* This can happen if a message gets posted to the hook after
|
||
|
|
* releasing the last acquire but before we completely unhook.
|
||
|
|
*/
|
||
|
|
RPF( "DINPUT: Keyboard hook not passed on to next hook" );
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* USE_SLOW_LL_HOOKS */
|