Migrating to new directory structure adopted from the RealVNC's source tree. More changes will follow.
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@591 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/win/rfb_win32/LowLevelKeyEvents.cxx b/win/rfb_win32/LowLevelKeyEvents.cxx
new file mode 100644
index 0000000..322d1f4
--- /dev/null
+++ b/win/rfb_win32/LowLevelKeyEvents.cxx
@@ -0,0 +1,96 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+ * USA.
+ */
+
+#include <windows.h>
+#include <rfb_win32/LowLevelKeyEvents.h>
+#include <rfb/Threading.h>
+#include <rfb/LogWriter.h>
+#include <list>
+
+using namespace rfb;
+using namespace win32;
+
+static LogWriter vlog("LowLevelKeyEvents");
+
+
+HHOOK hook = 0;
+std::list<HWND> windows;
+Mutex windowLock;
+
+
+static bool filterKeyEvent(int vkCode) {
+ switch (vkCode) {
+ case VK_LWIN:
+ case VK_RWIN:
+ case VK_SNAPSHOT:
+ return true;
+ case VK_TAB:
+ if (GetAsyncKeyState(VK_MENU) & 0x8000)
+ return true;
+ case VK_ESCAPE:
+ if (GetAsyncKeyState(VK_MENU) & 0x8000)
+ return true;
+ if (GetAsyncKeyState(VK_CONTROL) & 0x8000)
+ return true;
+ }
+ return false;
+}
+
+LRESULT CALLBACK LowLevelKeyEventProc(int nCode,
+ WPARAM wParam,
+ LPARAM lParam) {
+ if (nCode >= 0) {
+ Lock l(windowLock);
+ HWND foreground = GetForegroundWindow();
+ std::list<HWND>::iterator i;
+ for (i=windows.begin(); i!=windows.end(); i++) {
+ if (*i == foreground) {
+ UINT msgType = wParam;
+ KBDLLHOOKSTRUCT* msgInfo = (KBDLLHOOKSTRUCT*)lParam;
+ if (filterKeyEvent(msgInfo->vkCode)) {
+ vlog.debug("filtered event %lx(%lu) %lu", msgInfo->vkCode, msgInfo->vkCode, wParam);
+ PostMessage(*i, wParam, msgInfo->vkCode, (msgInfo->scanCode & 0xff) << 16);
+ return 1;
+ }
+ }
+ }
+ }
+ return CallNextHookEx(hook, nCode, wParam, lParam);
+}
+
+
+bool rfb::win32::enableLowLevelKeyEvents(HWND hwnd) {
+// *** return false; // *** THIS CODE IS EXPERIMENTAL, SO DISABLED BY DEFAULT!
+ Lock l(windowLock);
+ if (windows.empty() && !hook)
+ hook = SetWindowsHookEx(WH_KEYBOARD_LL, &LowLevelKeyEventProc, GetModuleHandle(0), 0);
+ if (hook)
+ windows.push_back(hwnd);
+ vlog.debug("enable %p -> %s", hwnd, hook ? "success" : "failure");
+ return hook != 0;
+}
+
+void rfb::win32::disableLowLevelKeyEvents(HWND hwnd) {
+ vlog.debug("disable %p", hwnd);
+ Lock l(windowLock);
+ windows.remove(hwnd);
+ if (windows.empty() && hook) {
+ UnhookWindowsHookEx(hook);
+ hook = 0;
+ }
+}