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- '\" $Header: /user6/ouster/wish/man/RCS/WindowId.3,v 1.9 93/04/01 09:42:00 ouster Exp $ SPRITE (Berkeley)
- '\"
- .so man.macros
- .HS Tk_WindowId tkc
- .BS
- .SH NAME
- Tk_WindowId, Tk_Parent, Tk_Display, Tk_DisplayName, Tk_ScreenNumber, Tk_Screen, Tk_X, Tk_Y, Tk_Width, Tk_Height, Tk_Changes, Tk_Attributes, Tk_IsMapped, Tk_IsTopLevel, Tk_ReqWidth, Tk_ReqHeight, Tk_InternalBorderWidth, Tk_Visual, Tk_Depth, Tk_Colormap \- retrieve information from Tk's local data structure
- .SH SYNOPSIS
- .nf
- \fB#include <tk.h>\fR
- .sp
- Window
- \fBTk_WindowId\fR(\fItkwin\fR)
- .sp
- Tk_Window
- \fBTk_Parent\fR(\fItkwin\fR)
- .sp
- Display *
- \fBTk_Display\fR(\fItkwin\fR)
- .sp
- char *
- \fBTk_DisplayName\fR(\fItkwin\fR)
- .sp
- int
- \fBTk_ScreenNumber\fR(\fItkwin\fR)
- .sp
- Screen *
- \fBTk_Screen\fR(\fItkwin\fR)
- .sp
- int
- \fBTk_X\fR(\fItkwin\fR)
- .sp
- int
- \fBTk_Y\fR(\fItkwin\fR)
- .sp
- int
- \fBTk_Width\fR(\fItkwin\fR)
- .sp
- int
- \fBTk_Height\fR(\fItkwin\fR)
- .sp
- XWindowChanges *
- \fBTk_Changes\fR(\fItkwin\fR)
- .sp
- XSetWindowAttributes *
- \fBTk_Attributes\fR(\fItkwin\fR)
- .sp
- int
- \fBTk_IsMapped\fR(\fItkwin\fR)
- .sp
- .VS
- int
- \fBTk_IsTopLevel\fR(\fItkwin\fR)
- .VE
- .sp
- int
- \fBTk_ReqWidth\fR(\fItkwin\fR)
- .sp
- int
- .br
- \fBTk_ReqHeight\fR(\fItkwin\fR)
- .sp
- int
- .br
- \fBTk_InternalBorderWidth\fR(\fItkwin\fR)
- .sp
- .VS
- Visual *
- .br
- \fBTk_Visual\fR(\fItkwin\fR)
- .sp
- int
- .br
- \fBTk_Depth\fR(\fItkwin\fR)
- .sp
- Colormap
- .br
- \fBTk_Colormap\fR(\fItkwin\fR)
- .VE
- .SH ARGUMENTS
- .AS Tk_Window tkwin
- .AP Tk_Window tkwin in
- Token for window.
- .BE
-
- .SH DESCRIPTION
- .PP
- \fBTk_WindowID\fR and the other names listed above are
- all macros that return fields from Tk's local data structure
- for \fItkwin\fR. None of these macros requires any
- interaction with the server; it is safe to assume that
- all are fast.
- .PP
- \fBTk_WindowId\fR returns the X identifier for \fItkwin\fR,
- or \fBNULL\fR if no X window has been created for \fItkwin\fR
- yet (see the \fBTk_CreateMainWindow\fR manual entry for details).
- .PP
- \fBTk_Parent\fR returns Tk's token for the logical parent of
- \fItkwin\fR. The parent is the token that was specified when
- \fItkwin\fR was created, or NULL for main windows.
- .PP
- \fBTk_Display\fR returns a pointer to the Xlib display structure
- corresponding to \fItkwin\fR. \fBTk_DisplayName\fR returns an
- ASCII string identifying \fItkwin\fR's display. \fBTk_ScreenNumber\fR
- returns the index of \fItkwin\fR's screen among all the screens
- of \fItkwin\fR's display. \fBTk_Screen\fR returns a pointer to
- the Xlib structure corresponding to \fItkwin\fR's screen.
- .PP
- \fBTk_X\fR, \fBTk_Y\fR, \fBTk_Width\fR, and \fBTk_Height\fR
- return information about \fItkwin's\fR location within its
- parent and its size. The location information refers to the
- upper-left pixel in the window, or its border if there is one.
- The width and height information refers to the interior size
- of the window, not including any border. \fBTk_Changes\fR
- returns a pointer to a structure containing all of the above
- information plus a few other fields. \fBTk_Attributes\fR
- returns a pointer to an XSetWindowAttributes structure describing
- all of the attributes of the \fItkwin\fR's window, such as background
- pixmap, event mask, and so on (Tk keeps track of all this information
- as it is changed by the application). Note: it is essential that
- applications use Tk procedures like \fBTk_ResizeWindow\fR instead
- of X procedures like \fBXResizeWindow\fR, so that Tk can keep its
- data structures up-to-date.
- .PP
- \fBTk_IsMapped\fR returns a non-zero value if \fItkwin\fR
- is mapped and zero if \fItkwin\fR isn't mapped.
- .PP
- .VS
- \fBTk_IsTopLevel\fR returns a non-zero value if \fItkwin\fR
- is a top-level window (its X parent is the root window of the
- screen) and zero if \fItkwin\fR isn't a top-level window.
- .VE
- .PP
- \fBTk_ReqWidth\fR and \fBTk_ReqHeight\fR return information about
- the window's requested size. These values correspond to the last
- call to \fBTk_GeometryRequest\fR for \fItkwin\fR.
- .PP
- \fBTk_InternalBorderWidth\fR returns the width of internal border
- that has been requested for \fItkwin\fR, or 0 if no internal border
- was requested. The return value is simply the last value passed
- to \fBTk_SetInternalBorder\fR for \fItkwin\fR.
- .PP
- .VS
- \fBTk_Visual\fR, \fBTk_Depth\fR, and \fBTk_Colormap\fR return
- information about the visual characteristics of a window.
- \fBTk_Visual\fR returns the visual type for
- the window, \fBTk_Depth\fR returns the number of bits per pixel,
- and \fBTk_Colormap\fR returns the current
- colormap for the window. The visual characteristics are
- normally set from the defaults for the window's screen, but
- they may be overridden by calling \fBTk_SetWindowVisual\fR.
- .VE
-
- .SH KEYWORDS
- attributes, colormap, depth, display, height, geometry manager,
- identifier, mapped, requested size, screen, top-level,
- visual, width, window, x, y
-