swonk@toshais.UUCP (Glenn L. Swonk) (06/07/91)
Can anyone suggest a way to write (draw) on the root window? Does anyone know how the screen saver programs like screenpeace, intermission or afterdark work? thanks glenn
bonneau@hyper.hyper.com (Paul Bonneau) (06/11/91)
In article <216@toshais.UUCP> swonk@toshais.UUCP (Glenn L. Swonk) writes: >Can anyone suggest a way to write (draw) on the >root window? Does anyone know how the screen >saver programs like screenpeace, intermission or >afterdark work? > As for drawing on the desktop (root window): HWND hwndDesk = GetDeskTopWindow(); HDC hdc = GetDC(hwndDesk); /* Draw to your heart's content with the dc. */ ReleaseDC(hwndDesk, hdc); cheers - Paul Bonneau.
mikec@ersys.edmonton.ab.ca (Mike Coward) (06/15/91)
swonk@toshais.UUCP (Glenn L. Swonk) writes: > Can anyone suggest a way to write (draw) on the > root window? Does anyone know how the screen > saver programs like screenpeace, intermission or > afterdark work? > glenn The easiest way to get a device context to the screen is to call GetDC with a parameter of 0. ie: ScreenDC = GetDC(0); Another way to do something similar to screen blankers is to create a window with the dimensions of the screen and write on that window... Mike /save Mike Coward mikec@ersys.edmonton.ab.ca Edmonton Remote Systems: Serving Northern Alberta since 1982
kensy@microsoft.UUCP (Ken SYKES) (06/24/91)
In article <uPoJ41w164w@ersys.edmonton.ab.ca> mikec@ersys.edmonton.ab.ca (Mike Coward) writes: >swonk@toshais.UUCP (Glenn L. Swonk) writes: >The easiest way to get a device context to the screen >is to call GetDC with a parameter of 0. ie: >ScreenDC = GetDC(0); Or ScreenDC = GetDC(GetDesktopWindow()); That way you aren't depending on NULL behavior. This function is new for 3.0. Ken Sykes Disclaimer: The above opinions are solely my own.
aaron@jessica.stanford.edu (Aaron Wallace) (06/24/91)
In article <73102@microsoft.UUCP> kensy@microsoft.UUCP (Ken SYKES) writes: >In article <uPoJ41w164w@ersys.edmonton.ab.ca> mikec@ersys.edmonton.ab.ca (Mike Coward) writes: >>swonk@toshais.UUCP (Glenn L. Swonk) writes: >>The easiest way to get a device context to the screen >>is to call GetDC with a parameter of 0. ie: >>ScreenDC = GetDC(0); > > >Or ScreenDC = GetDC(GetDesktopWindow()); > >That way you aren't depending on NULL behavior. This function is >new for 3.0. Are these the same? I thought that the former got a DC to the entire screen, while the latter gets a DC which is clipped to all visible windows on the screen... Aaron Wallace