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Annotation of researchv10dc/630/man/src/p_man/man3/pt2win.3l, revision 1.1

1.1     ! root        1: .TH PT2WIN 3L "630 MTG"
        !             2: .XE "point2window()"
        !             3: .SH NAME
        !             4: pt2win: point2window \- find process table address of a window
        !             5: .SH SYNOPSIS
        !             6: .ft B
        !             7: #include <dmd.h>
        !             8: .br
        !             9: Proc \(**point2window (btn)
        !            10: .br
        !            11: int btn;
        !            12: .SH DESCRIPTION
        !            13: The
        !            14: .I point2window
        !            15: function implements the user interface for pointing to windows that
        !            16: are used by the Reshape, Move, Top, etc. functions of the 630 MTG
        !            17: main button 3 menu.
        !            18: .PP
        !            19: When
        !            20: .I point2window
        !            21: is called by an application program,
        !            22: the mouse cursor changes to a target icon.
        !            23: The function then busy waits for the user to move the mouse
        !            24: cursor into a window and press the button specified by \fIbtn\fR.
        !            25: When this happens, the mouse cursor will change back to the
        !            26: previous mouse cursor, and the process table address of the window
        !            27: pointed to will be returned.
        !            28: .PP
        !            29: The function will return (Proc *)0 if the user either clicks 
        !            30: button \fIbtn\fR while the target is over background
        !            31: texture or clicks a mouse button other than button \fIbtn\fR.
        !            32: .SH EXAMPLE
        !            33: The follow subroutine will flash a window pointed to with button 3.
        !            34: Note that in the following code, \fIp->layer\fR is equivalent
        !            35: to &\fIdisplay\fR for process p and that \fIp->rect\fR is equivalent
        !            36: to \fIDrect\fR for process p.
        !            37: .PP
        !            38: .RS 3
        !            39: .nf
        !            40: .ft CM
        !            41: #include <dmd.h>
        !            42: 
        !            43: flash()
        !            44: {
        !            45:        Proc *p;
        !            46:        Proc *point2window();
        !            47: 
        !            48:        p = point2window(3);
        !            49:        if(p) {
        !            50:                rectf(p->layer, p->rect, F_XOR);
        !            51:                nap(20);
        !            52:                rectf(p->layer, p->rect, F_XOR);
        !            53:        }
        !            54: }
        !            55: \fR
        !            56: .fi
        !            57: .RE
        !            58: .SH SEE ALSO
        !            59: globals(3R), rectf(3R), sleep(3R).

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