Background Transparency for moonlight

[NighLow]

Not really an issue, but I would like to request background transparency for moonlight streaming for users who do not have a fuser.

[WyvrnRes]

Starting from line 60 in Main.cpp, replace the code with this:

// Set the window to LAYERED (for transparency)
hWnd = CreateWindowEx(WS_EX_LAYERED | WS_EX_APPWINDOW, wc.lpszClassName, L"GUI Framework",
    WS_POPUP,
    0, 0, screenWidth, screenHeight, NULL, NULL, hInstance, NULL);

if (!hWnd)
    return -1;

// Make the black window background transparent
SetLayeredWindowAttributes(hWnd, RGB(0, 0, 0), 0, LWA_COLORKEY);