[ros-dev] Re: [ros-diffs] [mbosma] 17213: Fix another bug thanks to GreatLord.

[Royce Mitchell III]

magnus at itkonsult-olsen.com wrote:

>Hi
>I think it is not wrong with GetWindowDC(GetDesktopWindow());
>for we need current desktop, to get the screen width, height and some other
>data. so I think is pretty clear what it does. we can do same thing with
>createdc then we need look wich graphic driver are in use. And I do not if
>GetDC(NULL) work fine in ros.
>  
>
If it doesn't work in ros, it should. If not, it should be easy to fix. 
To quote GetDC() documentation from MSDN:

/hWnd/
    [in] Handle to the window whose DC is to be retrieved. If this value
    is NULL, *GetDC* retrieves the DC for the entire screen. 

(I frequently use GetDC(NULL) for calls to CreateCompatibleDC and 
CreateCompatibleBitmap).

In fact, GetWindowDC(NULL), appears to do the same thing as GetDC(NULL), 
but I personally prefer GetDC(NULL), because it's easier to type ;)