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XIntersectRegion, XUnionRegion, XUnionRectWithRegion, XSubtractRegion, XXorRegion, XOffsetRegion, XShrinkRegion - region arithmetic
XIntersectRegion(sra, srb, dr_return)
Region sra, srb, dr_return;
XUnionRegion(sra, srb, dr_return)
Region sra, srb, dr_return;
XUnionRectWithRegion(rectangle, src_region, dest_region_return)
XRectangle *rectangle;
Region src_region;
Region dest_region_return;
XSubtractRegion(sra, srb, dr_return)
Region sra, srb, dr_return;
XXorRegion(sra, srb, dr_return)
Region sra, srb, dr_return;
XOffsetRegion(r, dx, dy)
Region r;
int dx, dy;
XShrinkRegion(r, dx, dy)
Region r;
int dx, dy;
Returns the destination region.
Returns the result of the computation.
Specify the x and y coordinates, which define the amount you
want to move or shrink the specified region.
Specifies the region.
Specifies the rectangle.
Specify the two regions with which you want to perform the
computation.
Specifies the source region to be used.
The XIntersectRegion function computes the intersection of two regions.
The XUnionRegion function computes the union of two regions.
The XUnionRectWithRegion function updates the destination region from a union of the specified rectangle and the specified source region.
The XSubtractRegion function subtracts srb from sra and stores the results in dr_return.
The XXorRegion function calculates the difference between the union and intersection of two regions.
The XOffsetRegion function moves the specified region by a specified amount.
The
XShrinkRegion
function reduces the specified
region by a specified amount. Positive values shrink the size of the region,
and negative values expand the region.
XCreateRegion(3X11), XDrawRectangle(3X11), XEmptyRegion(3X11)
Xlib -- C Language X Interface