Initial commit

win/rfb_win32/Win32Util.cxx

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+/* 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.
+ */
+
+// Win32Util.cxx
+
+#include <rfb_win32/ModuleFileName.h>
+#include <rfb_win32/Win32Util.h>
+#include <rfb_win32/MonitorInfo.h>
+#include <rfb_win32/Handle.h>
+#include <rdr/HexOutStream.h>
+#include <rdr/Exception.h>
+#include <stdio.h>
+
+namespace rfb {
+namespace win32 {
+
+
+FileVersionInfo::FileVersionInfo(const TCHAR* filename) {
+  // Get executable name
+  ModuleFileName exeName;
+  if (!filename)
+    filename = exeName.buf;
+
+  // Attempt to open the file, to cause Access Denied, etc, errors
+  // to be correctly reported, since the GetFileVersionInfoXXX calls lie...
+  {
+    Handle file(CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0));
+	  if (file.h == INVALID_HANDLE_VALUE)
+      throw rdr::SystemException("Failed to open file", GetLastError());
+  }
+
+  // Get version info size
+  DWORD handle;
+  int size = GetFileVersionInfoSize((TCHAR*)filename, &handle);
+  if (!size)
+    throw rdr::SystemException("GetVersionInfoSize failed", GetLastError());
+
+  // Get version info
+  buf = new TCHAR[size];
+  if (!GetFileVersionInfo((TCHAR*)filename, handle, size, buf))
+    throw rdr::SystemException("GetVersionInfo failed", GetLastError());
+}
+
+const TCHAR* FileVersionInfo::getVerString(const TCHAR* name, DWORD langId) {
+  char langIdBuf[sizeof(langId)];
+  for (int i=sizeof(langIdBuf)-1; i>=0; i--) {
+    langIdBuf[i] = (char) (langId & 0xff);
+    langId = langId >> 8;
+  }
+
+  TCharArray langIdStr(rdr::HexOutStream::binToHexStr(langIdBuf, sizeof(langId)));
+  TCharArray infoName(_tcslen(_T("StringFileInfo")) + 4 + _tcslen(name) + _tcslen(langIdStr.buf));
+  _stprintf(infoName.buf, _T("\\StringFileInfo\\%s\\%s"), langIdStr.buf, name);
+
+  // Locate the required version string within the version info
+  TCHAR* buffer = 0;
+  UINT length = 0;
+  if (!VerQueryValue(buf, infoName.buf, (void**)&buffer, &length)) {
+    printf("unable to find %s version string", infoName.buf);
+    throw rdr::Exception("VerQueryValue failed");
+  }
+  return buffer;
+}
+
+
+bool splitPath(const TCHAR* path, TCHAR** dir, TCHAR** file) {
+  return tstrSplit(path, '\\', dir, file, true);
+}
+
+
+void centerWindow(HWND handle, HWND parent) {
+  RECT r;
+  MonitorInfo mi(parent ? parent : handle);
+  if (!parent || !IsWindowVisible(parent) || !GetWindowRect(parent, &r))
+    r=mi.rcWork;
+  centerWindow(handle, r);
+  mi.clipTo(handle);
+}
+
+void centerWindow(HWND handle, const RECT& r) {
+  RECT wr;
+  if (!GetWindowRect(handle, &wr)) return;
+  int w = wr.right-wr.left;
+  int h = wr.bottom-wr.top;
+  int x = (r.left + r.right - w)/2;
+  int y = (r.top + r.bottom - h)/2;
+  UINT flags = SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOZORDER | SWP_NOSIZE;
+  SetWindowPos(handle, 0, x, y, 0, 0, flags);
+}
+
+void resizeWindow(HWND handle, int width, int height) {
+  RECT r;
+  GetWindowRect(handle, &r);
+  SetWindowPos(handle, 0, 0, 0, width, height, SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOZORDER | SWP_NOMOVE);
+  centerWindow(handle, r);
+}
+
+
+};
+};