OffsetRgn info Overview Group

The OffsetRgn function moves a region by the specified offsets.

int OffsetRgn(

HRGN hrgn,

// handle to region

int nXOffset,

// offset along x-axis

int nYOffset

// offset along y-axis

);

Parameters

hrgn: Identifies the region to be moved.
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. It can be 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; region is unaffected.

HRGN hrgn,	// handle to region
int nXOffset,	// offset along x-axis
int nYOffset	// offset along y-axis
);

Value	Meaning
NULLREGION	Region is empty.
SIMPLEREGION	Region is a single rectangle.
COMPLEXREGION	Region is more than one rectangle.
ERROR	An error occurred; region is unaffected.