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barrier
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now letting some key events filter through. this allows the 

keyboard lights to track toggle changes.  however, it also
seems to let through keyboard events that shouldn't get
through.
This commit is contained in:
crs 2002-05-22 17:05:26 +00:00
parent 685bcfa05f
commit 9e161163b0
1 changed files with 62 additions and 3 deletions
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61
server/CSynergyHook.cpp
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@ -15,6 +15,7 @@ static DWORD g_process = NULL;
static HWND g_hwnd = NULL;
static HHOOK g_keyboard = NULL;
static HHOOK g_mouse = NULL;
static HHOOK g_cbt = NULL;
static bool g_relay = false;
static SInt32 g_zoneSize = 0;
static UInt32 g_zoneSides = 0;
@ -57,10 +58,30 @@ static LRESULT CALLBACK keyboardHook(int code, WPARAM wParam, LPARAM lParam)
{
if (code >= 0) {
if (g_relay) {
if (code == HC_ACTION) {
// forward message to our window
PostMessage(g_hwnd, SYNERGY_MSG_KEY, wParam, lParam);
// if the active window isn't our window then make it
// active.
const bool wrongFocus = (GetActiveWindow() != g_hwnd);
if (wrongFocus) {
SetForegroundWindow(g_hwnd);
}
// let non-system keyboard messages through to our window.
// this allows DefWindowProc() to do normal processing.
// for most keys that means do nothing. for toggle keys
// it means updating the thread's toggle state. discard
// system messages (i.e. keys pressed when alt is down) to
// prevent unexpected or undesired processing. also
// discard messages if not destined for our window
if (wrongFocus || (lParam & 0x20000000lu) != 0) {
return 1;
}
}
}
}
return CallNextHookEx(g_keyboard, code, wParam, lParam);
}
@ -134,6 +155,25 @@ static LRESULT CALLBACK mouseHook(int code, WPARAM wParam, LPARAM lParam)
return CallNextHookEx(g_mouse, code, wParam, lParam);
}
static LRESULT CALLBACK cbtHook(int code, WPARAM wParam, LPARAM lParam)
{
if (code >= 0) {
if (g_relay) {
switch (code) {
case HCBT_ACTIVATE:
case HCBT_SETFOCUS:
// discard unless activating our window
if (reinterpret_cast<HWND>(wParam) != g_hwnd) {
return 1;
}
break;
}
}
}
return CallNextHookEx(g_cbt, code, wParam, lParam);
}
//
// external functions
@ -149,7 +189,7 @@ BOOL WINAPI DllMain(HINSTANCE instance, DWORD reason, LPVOID)
}
else if (reason == DLL_PROCESS_DETACH) {
if (g_process == GetCurrentProcessId()) {
if (g_keyboard != NULL || g_mouse != NULL) {
if (g_keyboard != NULL || g_mouse != NULL || g_cbt != NULL) {
uninstall();
}
g_process = NULL;
@ -165,6 +205,7 @@ int install(HWND hwnd)
assert(g_hinstance != NULL);
assert(g_keyboard == NULL);
assert(g_mouse == NULL);
assert(g_cbt == NULL);
// save window
g_hwnd = hwnd;
@ -201,6 +242,21 @@ int install(HWND hwnd)
return 0;
}
// install CBT hook
g_cbt = SetWindowsHookEx(WH_CBT,
&cbtHook,
g_hinstance,
0);
if (g_cbt == NULL) {
// uninstall keyboard and mouse hooks before failing
UnhookWindowsHookEx(g_keyboard);
UnhookWindowsHookEx(g_mouse);
g_keyboard = NULL;
g_mouse = NULL;
g_hwnd = NULL;
return 0;
}
return 1;
}
@ -208,12 +264,15 @@ int uninstall(void)
{
assert(g_keyboard != NULL);
assert(g_mouse != NULL);
assert(g_cbt != NULL);
// uninstall hooks
UnhookWindowsHookEx(g_keyboard);
UnhookWindowsHookEx(g_mouse);
UnhookWindowsHookEx(g_cbt);
g_keyboard = NULL;
g_mouse = NULL;
g_cbt = NULL;
g_hwnd = NULL;
// show the cursor