Inside Macintosh: Macintosh Toolbox Essentials
If Color QuickDraw is not available, you create windows with a parallel data structure, the window record. The only difference between a color window record and a window record is that a color window record points to a color graphics port, which allows full use of Macintosh computers with color capability, and a window record points to a monochrome graphics port
The data types that describe window records, WindowRecord , WindowPtr , and WindowPeek , are parallel to the data types that describe color window records, and the fields in the monochrome window record are identical to the fields in the color window record. For a complete description, see "The Color Window Record" .
struct WindowRecord { /* all fields have same use
/* as in color window record */
GrafPort port; /*window's graphics port */
short windowKind; /*class of the window */
Boolean visible; /* visibility */
Boolean hilited; /* highlighting */
Boolean goAwayFlag; /* presence of close box */
Boolean spareFlag; /* presence of zoom box */
RgnHandle strucRgn; /* handle to structure
/* region */
RgnHandle contRgn; /* handle to content
/* region */
RgnHandle updateRgn; /* handle to update region */
Handle windowDefProc; /* handle to window
/* definition function */
Handle dataHandle; / *handle to window state
/* data record */
StringHandle titleHandle; /* handle to window title */
short titleWidth; /* title width in pixels */
ControlHandle controlList; /* handle to window's
/* control list */
WindowPeek nextWindow; /* next window in window
/* list */
PicHandle windowPic; /*handle to optional
/* picture */
long refCon; /*reference constant */
};
typedef struct WindowRecord WindowRecord;
typedef WindowRecord *WindowPeek;
typedef GrafPtr WindowPtr;