--[[

This script tests for the presence of Techsmith Screen Capture Codec

These registry keys should exist on the target system:
    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\drivers.desc]
    "tsccvid.dll"="TechSmith Screen Capture Codec"
    [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Drivers32]
    "vidc.tscc"="tsccvid.dll"

This file should exist on the target system:
	_SystemFolder\\tsccvid.dll

]]

function mq_FindTSCC()
	local bOK = true;	
	local strVersion = "0.0.0.0";
    
    -- Debug.ShowWindow();

	-- step 1
	bOK = Registry.DoesKeyExist(HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\drivers.desc");
	if (bOK) then
		strDriver = Registry.GetValue(HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\drivers.desc", "tsccvid.dll", true);
		if (Application.GetLastError() ~= 0) then	
			bOK = false;
			Debug.Print("Step 1: tsccvid.dll not found in HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\drivers.desc\r\n");
		else
			Debug.Print("Step 1: tsccvid.dll found\r\n");
		end
	end
	
	-- step 2
	bOK = Registry.DoesKeyExist(HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Drivers32");
	if (bOK) then
		strDriver = Registry.GetValue(HKEY_LOCAL_MACHINE, "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Drivers32", "vidc.tscc", true);
		if (Application.GetLastError() ~= 0) then	
			bOK = false;
			Debug.Print("Step 2: vidc.tscc not found in HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Drivers32\r\n");
		else
			Debug.Print("Step 2: vidc.tscc found\r\n");
		end
	end
	
	-- step 3
	if (bOK) then
		-- Detect the version of the driver
		verInfo = File.GetVersionInfo(_SystemFolder .. "\\tsccvid.dll");
		if(Application.GetLastError() ~= 0)then
			strVersion = "0.0.0.0";
			Debug.Print("Step 3: tsccvid.dll not found in " .. _SystemFolder .. "\r\n");
		else
			-- OK, we have the file version
			strVersion = verInfo.FileVersion;
			Debug.Print("Step 3: tsccvid.dll version " .. strVersion .. " found in " .. _SystemFolder .. "\r\n");
		end
	end
	
	if (bOK ~= true) then
		strVersion = "0.0.0.0";
	end
	
	return strVersion;
end