1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/*
*Copyright (C) 2004 Harold L Hunt II All Rights Reserved.
*
*Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
*"Software"), to deal in the Software without restriction, including
*without limitation the rights to use, copy, modify, merge, publish,
*distribute, sublicense, and/or sell copies of the Software, and to
*permit persons to whom the Software is furnished to do so, subject to
*the following conditions:
*
*The above copyright notice and this permission notice shall be
*included in all copies or substantial portions of the Software.
*
*THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
*EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
*MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
*NONINFRINGEMENT. IN NO EVENT SHALL HAROLD L HUNT II BE LIABLE FOR
*ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
*CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
*WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*Except as contained in this notice, the name of Harold L Hunt II
*shall not be used in advertising or otherwise to promote the sale, use
*or other dealings in this Software without prior written authorization
*from Harold L Hunt II.
*
* Authors: Harold L Hunt II
*/
#ifdef HAVE_XWIN_CONFIG_H
#include <xwin-config.h>
#endif
#include "win.h"
static HHOOK g_hhookKeyboardLL = NULL;
/*
* Function prototypes
*/
static LRESULT CALLBACK
winKeyboardMessageHookLL(int iCode, WPARAM wParam, LPARAM lParam);
#ifndef LLKHF_EXTENDED
#define LLKHF_EXTENDED 0x00000001
#endif
#ifndef LLKHF_UP
#define LLKHF_UP 0x00000080
#endif
/*
* KeyboardMessageHook
*/
static LRESULT CALLBACK
winKeyboardMessageHookLL(int iCode, WPARAM wParam, LPARAM lParam)
{
BOOL fPassKeystroke = FALSE;
BOOL fPassAltTab = TRUE;
PKBDLLHOOKSTRUCT p = (PKBDLLHOOKSTRUCT) lParam;
HWND hwnd = GetActiveWindow();
WindowPtr pWin = NULL;
winPrivWinPtr pWinPriv = NULL;
winPrivScreenPtr pScreenPriv = NULL;
winScreenInfo *pScreenInfo = NULL;
/* Check if the Windows window property for our X window pointer is valid */
if ((pWin = GetProp(hwnd, WIN_WINDOW_PROP)) != NULL) {
/* Get a pointer to our window privates */
pWinPriv = winGetWindowPriv(pWin);
/* Get pointers to our screen privates and screen info */
pScreenPriv = pWinPriv->pScreenPriv;
pScreenInfo = pScreenPriv->pScreenInfo;
if (pScreenInfo->fMultiWindow)
fPassAltTab = FALSE;
}
/* Pass keystrokes on to our main message loop */
if (iCode == HC_ACTION) {
winDebug("winKeyboardMessageHook: vkCode: %08x scanCode: %08x\n",
(unsigned int)p->vkCode, (unsigned int)p->scanCode);
switch (wParam) {
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
case WM_KEYUP:
case WM_SYSKEYUP:
fPassKeystroke =
(fPassAltTab &&
(p->vkCode == VK_TAB) && ((p->flags & LLKHF_ALTDOWN) != 0))
|| (p->vkCode == VK_LWIN) || (p->vkCode == VK_RWIN);
break;
}
}
/*
* Pass message on to our main message loop.
* We process this immediately with SendMessage so that the keystroke
* appears in, hopefully, the correct order.
*/
if (fPassKeystroke) {
LPARAM lParamKey = 0x0;
/* Construct the lParam from KBDLLHOOKSTRUCT */
lParamKey = lParamKey | (0x0000FFFF & 0x00000001); /* Repeat count */
lParamKey = lParamKey | (0x00FF0000 & (p->scanCode << 16));
lParamKey = lParamKey
| (0x01000000 & ((p->flags & LLKHF_EXTENDED) << 23));
lParamKey = lParamKey
| (0x20000000 & ((p->flags & LLKHF_ALTDOWN) << 24));
lParamKey = lParamKey | (0x80000000 & ((p->flags & LLKHF_UP) << 24));
/* Send message to our main window that has the keyboard focus */
PostMessage(hwnd, (UINT) wParam, (WPARAM) p->vkCode, lParamKey);
return 1;
}
/* Call next hook */
return CallNextHookEx(NULL, iCode, wParam, lParam);
}
/*
* Attempt to install the keyboard hook, return FALSE if it was not installed
*/
Bool
winInstallKeyboardHookLL(void)
{
/* Install the hook only once */
if (!g_hhookKeyboardLL)
g_hhookKeyboardLL = SetWindowsHookEx(WH_KEYBOARD_LL,
winKeyboardMessageHookLL,
g_hInstance, 0);
return TRUE;
}
/*
* Remove the keyboard hook if it is installed
*/
void
winRemoveKeyboardHookLL(void)
{
if (g_hhookKeyboardLL)
UnhookWindowsHookEx(g_hhookKeyboardLL);
g_hhookKeyboardLL = NULL;
}
|
