Help!! "Device Context"

[himuskanhere]

Can any explain me diff ways of obtaining DCs. In my problem, I have to draw some geometric figure from a function(methode) where i dont have DC. Thanks in advance!! :cool:

[sakssp]

Use GetDC() of CDC

[himuskanhere]

no, i m not getting DC using GetDC...

[sakssp]

Do you want to draw on it on MainWnd or On any other window or dialog?

[CPallini]

With Win32 function ::GetDC(NULL) you can get the handle of the screen DC.

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.

[Rajkumar R]

Hi, Always draw on OnDraw(), and / or OnPaint() (MFC). From Outside these function call RedrawWindow() to update.

[Mark Salsbery]

It depends on what you need a DC for (what you want to draw on). A DC is a "device context". It represents the drawing attributes of a device. If you need a DC to draw in the client area of a window you can use GetDC(); If you want to be able to draw on an entire window (not just the client are) there's GetWindowDC(). To draw anywhere on the screen, either of the above can be used to obtain a screen DC. For non-screen-related devices there's CreateDC() For drawing to memory there's CreateCompatibleDC(); Mark

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