Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Collapse the table of content
Expand the table of content

GetDC (Compact 2013)


This function retrieves a handle to a display device context (DC) for the client area of the specified window. The display device context can be used in subsequent graphics display interface (GDI) functions to draw in the client area of the window.

  HWND hWnd


Handle to the window whose device context is to be retrieved. If this value is NULL, GetDC retrieves a writable device context for the entire screen.

The handle the device context for the specified window's client area indicates success. NULL indicates failure.

To get extended error information, call GetLastError.

The GetDC function retrieves a common, class, or private device context depending on the class style specified for the specified window.

For common device contexts, GetDC assigns default attributes to the device context each time it is retrieved.

For class and private device contexts, GetDC leaves the previously assigned attributes unchanged.

After painting with a common device context, the ReleaseDC function must be called to release the device context.

Class and private device contexts do not have to be released.

The number of device contexts is limited only by available memory.





© 2015 Microsoft