XSetClipOrigin 3X11 __xorgversion__ XLIB FUNCTIONS XSetClipOrigin XSetClipMask XSetClipRectangles GC convenience routines int XSetClipOrigin ( Display *display , GC gc , int clip_x_origin , int clip_y_origin ); int XSetClipMask ( Display *display , GC gc , Pixmap pixmap ); int XSetClipRectangles ( Display *display , GC gc , int clip_x_origin , int clip_y_origin , XRectangle rectangles[] , int n , int ordering ); display Specifies the connection to the X server. clip_x_origin clip_y_origin Specify the x and y coordinates of the clip-mask origin. gc Specifies the GC. n Specifies the number of rectangles. ordering Specifies the ordering relations on the rectangles. You can pass  Unsorted ,  YSorted ,  YXSorted , or  YXBanded . pixmap Specifies the pixmap or  None . rectangles Specifies an array of rectangles that define the clip-mask. The  XSetClipOrigin  function sets the clip origin in the specified GC. The clip-mask origin is interpreted relative to the origin of whatever destination drawable is specified in the graphics request.  XSetClipOrigin  can generate  BadAlloc  and  BadGC  errors. The  XSetClipMask  function sets the clip-mask in the specified GC to the specified pixmap. If the clip-mask is set to  None , the pixels are are always drawn (regardless of the clip-origin).  XSetClipMask  can generate  BadAlloc ,  BadGC ,  BadMatch , and  BadValue  errors. The  XSetClipRectangles  function changes the clip-mask in the specified GC to the specified list of rectangles and sets the clip origin. The output is clipped to remain contained within the rectangles. The clip-origin is interpreted relative to the origin of whatever destination drawable is specified in a graphics request. The rectangle coordinates are interpreted relative to the clip-origin. The rectangles should be nonintersecting, or the graphics results will be undefined. Note that the list of rectangles can be empty, which effectively disables output. This is the opposite of passing  None  as the clip-mask in  XCreateGC ,  XChangeGC , and  XSetClipMask . If known by the client, ordering relations on the rectangles can be specified with the ordering argument. This may provide faster operation by the server. If an incorrect ordering is specified, the X server may generate a  BadMatch  error, but it is not required to do so. If no error is generated, the graphics results are undefined.  Unsorted  means the rectangles are in arbitrary order.  YSorted  means that the rectangles are nondecreasing in their Y origin.  YXSorted  additionally constrains  YSorted  order in that all rectangles with an equal Y origin are nondecreasing in their X origin.  YXBanded  additionally constrains  YXSorted  by requiring that, for every possible Y scanline, all rectangles that include that scanline have an identical Y origins and Y extents.  XSetClipRectangles  can generate  BadAlloc ,  BadGC ,  BadMatch , and  BadValue  errors.  BadAlloc  The server failed to allocate the requested resource or server memory.  BadGC  A value for a GContext argument does not name a defined GContext.  BadMatch  Some argument or pair of arguments has the correct type and range but fails to match in some other way required by the request.  BadValue  Some numeric value falls outside the range of values accepted by the request. Unless a specific range is specified for an argument, the full range defined by the argument's type is accepted. Any argument defined as a set of alternatives can generate this error. XCreateGC(3X11), XDrawRectangle(3X11), XQueryBestSize(3X11), XSetArcMode(3X11), XSetFillStyle(3X11), XSetFont(3X11), XSetLineAttributes(3X11), XSetState(3X11), XSetTile(3X11) Xlib - C Language X Interface