private void FindAndLoadQuickLinkDLLs()
{
RegistryKey reg = RegistryKey.OpenBaseKey(Microsoft.Win32.RegistryHive.LocalMachine, RegistryView.Registry64);
RegistryKey qlRegKeyLoc = null;
foreach (string s in QuickConstants.QuickLinkRegistryKeyLocations)
{
// Try each possible key location.
qlRegKeyLoc = reg.OpenSubKey(s);
if (qlRegKeyLoc != null)
{
// Found the key.
break;
}
if (qlRegKeyLoc == null)
{
// Key not found.
continue;
}
}
if (qlRegKeyLoc == null)
{
reg = RegistryKey.OpenBaseKey(Microsoft.Win32.RegistryHive.LocalMachine, RegistryView.Registry32);
qlRegKeyLoc = null;
foreach (string s in QuickConstants.QuickLinkRegistryKeyLocations)
{
// Try each possible key location.
qlRegKeyLoc = reg.OpenSubKey(s);
if (qlRegKeyLoc != null)
{
// Found the key.
break;
}
if (qlRegKeyLoc == null)
{
// Key not found.
continue;
}
}
}
if (qlRegKeyLoc == null)
{
// Key not found!
throw new Exception("The QuickLinkDLL registry key could not be found.");
}
// Path to the QuickLink DLL.
string qlPath = qlRegKeyLoc.GetValue("Path").ToString();
if (qlPath == null)
{
// Value not found!
throw new Exception("The QuickLinkDLL path could not be retrieved from the registry.");
}
// The path to the Dragonfly capture DLL.
string dfPath = Path.Combine(Path.GetDirectoryName(qlPath), QuickConstants.PGRFlyCaptureDLLName);
/* Now we load the DLLs into our address space. This allows us to
* use DLLImport without knowing the full path to the DLLs until
* load time.
*/
this.dfHandle = Win32LibraryControl.Load(dfPath);
if ((cpp_long)this.dfHandle == 0)
{
// Unable to load the library!
throw new Win32Exception(Marshal.GetLastWin32Error());
}
this.qlHandle = Win32LibraryControl.Load(qlPath);
if ((cpp_long)this.qlHandle == 0)
{
// Unable to load the library!
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}
private void FreeQuickLinkDLLs()
{
Win32LibraryControl.Free(this.qlHandle);
Win32LibraryControl.Free(this.dfHandle);
}
