MSETCLIP()
 Define an inclusion region
------------------------------------------------------------------------------
 Syntax

     MSETCLIP([<nCoord list>], [<nMode>])

 Arguments

     <nCoord List> contains the coordinates of the inclusion region which
     is represented as a comma-separated list of four coordinates whose
     interpretation differs depending on mode.  If <nMode> is LLM_COOR_TEXT,
     the coordinates look like this:  <nTop>, <nLeft>, <nBottom>, <nRight>.
     If <nMode> is LLM_COOR_GRAPH, the coordinates are <nX1>, <nY1>, <nX2>,
     <nY2>.

     <nMode> is one of the following two constants:

     Coordinate Type Constants
     ------------------------------------------------------------------------
     Constant       Description
     ------------------------------------------------------------------------
     LLM_COOR_TEXT  Specifies that the coordinates are given in lines and
                    columns of text
     LLM_COOR_GRAPH Specifies that the coordinates are given in pixels
     ------------------------------------------------------------------------

 Returns

     MSETCLIP() returns an array of coordinate information.  The coordinates
     of the inclusion area are given in pixels and then in row/col format:

     aRegions := {nIncX1, nIncY1, nIncX2, nIncY2,;
        nIncR1, nIncC1, nIncR2, nIncC2,;
        nCoorType}

 Description

     MSETCLIP() controls mouse pointer movements.  It allows you to restrict
     movement to a region.  When an inclusion is defined and the user tries
     to move the mouse pointer out of the rectangle, it remains stuck at the
     edge of the area, but is still visible.  This mode should be used to
     restrict the range of user choices for moving or clicking the mouse.

 Notes

     The inclusion area is initialized to be the entire screen.  To eliminate
     an inclusion region you just pass the value LLM_INCLUDE as the first
     parameter or pass the four parameters for maximum screen values 0, 0,
     MAXCOL(), MAXROW().

 Examples

     .  This example shows how the MSETCLIP() function works:

        // Define an inclusion region and save the current
        // inclusion region in the array aOldInc

           aOldInc := MSETCLIP(5, 5, 20, 75,LLM_COOR_TEXT)
        // Code for selecting objects and buttons
        // Restore old inclusion region
        MSETCLIP(aOldInc[5],;
           aOldInc[6],;
           aOldInc[7],;
           aOldInc[8],;
        LLG_VIDEO_TEXT)

 Files   Library is LLIBG.LIB, header file is Llibg.ch.