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