OffsetClipRgn

The OffsetClipRgn function moves the clipping region of a device context by the specified offsets. 

int OffsetClipRgn(
  HDC hdc,       // handle to device context
  int nXOffset,  // offset along x-axis
  int nYOffset   // offset along y-axis
);

Parameters

hdc
Handle to the device context.
nXOffset
Specifies the number of logical units to move left or right.
nYOffset
Specifies the number of logical units to move up or down.

Return Values

The return value specifies the new region's complexity and can be any one of the following values:

Value Meaning
NULLREGION Region is empty.
SIMPLEREGION Region is a single rectangle.
COMPLEXREGION Region is more than one rectangle.
ERROR An error occurred. (The current clipping region is unaffected.)

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in wingdi.h.
  Import Library: Use gdi32.lib.

See Also

Clipping Overview, Clipping Functions, SelectClipRgn