--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/include/tkSelect.h	Tue Mar 18 17:55:14 2025 -0400
@@ -0,0 +1,167 @@
+/*
+ * tkSelect.h --
+ *
+ *	Declarations of types shared among the files that implement selection
+ *	support.
+ *
+ * Copyright (c) 1995 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#ifndef _TKSELECT
+#define _TKSELECT
+
+/*
+ * When a selection is owned by a window on a given display, one of the
+ * following structures is present on a list of current selections in the
+ * display structure. The structure is used to record the current owner of a
+ * selection for use in later retrieval requests. There is a list of such
+ * structures because a display can have multiple different selections active
+ * at the same time.
+ */
+
+typedef struct TkSelectionInfo {
+    Atom selection;		/* Selection name, e.g. XA_PRIMARY. */
+    Tk_Window owner;		/* Current owner of this selection. */
+    int serial;			/* Serial number of last XSelectionSetOwner
+				 * request made to server for this selection
+				 * (used to filter out redundant
+				 * SelectionClear events). */
+    Time time;			/* Timestamp used to acquire selection. */
+    Tk_LostSelProc *clearProc;	/* Procedure to call when owner loses
+				 * selection. */
+    ClientData clearData;	/* Info to pass to clearProc. */
+    struct TkSelectionInfo *nextPtr;
+				/* Next in list of current selections on this
+				 * display. NULL means end of list. */
+} TkSelectionInfo;
+
+/*
+ * One of the following structures exists for each selection handler created
+ * for a window by calling Tk_CreateSelHandler. The handlers are linked in a
+ * list rooted in the TkWindow structure.
+ */
+
+typedef struct TkSelHandler {
+    Atom selection;		/* Selection name, e.g. XA_PRIMARY. */
+    Atom target;		/* Target type for selection conversion, such
+				 * as TARGETS or STRING. */
+    Atom format;		/* Format in which selection info will be
+				 * returned, such as STRING or ATOM. */
+    Tk_SelectionProc *proc;	/* Procedure to generate selection in this
+				 * format. */
+    ClientData clientData;	/* Argument to pass to proc. */
+    int size;			/* Size of units returned by proc (8 for
+				 * STRING, 32 for almost anything else). */
+    struct TkSelHandler *nextPtr;
+				/* Next selection handler associated with same
+				 * window (NULL for end of list). */
+} TkSelHandler;
+
+/*
+ * When the selection is being retrieved, one of the following structures is
+ * present on a list of pending selection retrievals. The structure is used to
+ * communicate between the background procedure that requests the selection
+ * and the foreground event handler that processes the events in which the
+ * selection is returned. There is a list of such structures so that there can
+ * be multiple simultaneous selection retrievals (e.g. on different displays).
+ */
+
+typedef struct TkSelRetrievalInfo {
+    Tcl_Interp *interp;		/* Interpreter for error reporting. */
+    TkWindow *winPtr;		/* Window used as requestor for selection. */
+    Atom selection;		/* Selection being requested. */
+    Atom property;		/* Property where selection will appear. */
+    Atom target;		/* Desired form for selection. */
+    Tk_GetSelProc *proc;	/* Procedure to call to handle pieces of
+				 * selection. */
+    ClientData clientData;	/* Argument for proc. */
+    int result;			/* Initially -1. Set to a Tcl return value
+				 * once the selection has been retrieved. */
+    Tcl_TimerToken timeout;	/* Token for current timeout procedure. */
+    int idleTime;		/* Number of seconds that have gone by without
+				 * hearing anything from the selection
+				 * owner. */
+    Tcl_EncodingState encState;	/* Holds intermediate state during translations
+				 * of data that cross buffer boundaries. */
+    int encFlags;		/* Encoding translation state flags. */
+    Tcl_DString buf;		/* Buffer to hold translation data. */
+    struct TkSelRetrievalInfo *nextPtr;
+				/* Next in list of all pending selection
+				 * retrievals. NULL means end of list. */
+} TkSelRetrievalInfo;
+
+/*
+ * The clipboard contains a list of buffers of various types and formats. All
+ * of the buffers of a given type will be returned in sequence when the
+ * CLIPBOARD selection is retrieved. All buffers of a given type on the same
+ * clipboard must have the same format. The TkClipboardTarget structure is
+ * used to record the information about a chain of buffers of the same type.
+ */
+
+typedef struct TkClipboardBuffer {
+    char *buffer;		/* Null terminated data buffer. */
+    long length;		/* Length of string in buffer. */
+    struct TkClipboardBuffer *nextPtr;
+				/* Next in list of buffers. NULL means end of
+				 * list . */
+} TkClipboardBuffer;
+
+typedef struct TkClipboardTarget {
+    Atom type;			/* Type conversion supported. */
+    Atom format;		/* Representation used for data. */
+    TkClipboardBuffer *firstBufferPtr;
+				/* First in list of data buffers. */
+    TkClipboardBuffer *lastBufferPtr;
+				/* Last in list of clipboard buffers. Used to
+				 * speed up appends. */
+    struct TkClipboardTarget *nextPtr;
+				/* Next in list of targets on clipboard. NULL
+				 * means end of list. */
+} TkClipboardTarget;
+
+/*
+ * It is possible for a Tk_SelectionProc to delete the handler that it
+ * represents. If this happens, the code that is retrieving the selection
+ * needs to know about it so it doesn't use the now-defunct handler structure.
+ * One structure of the following form is created for each retrieval in
+ * progress, so that the retriever can find out if its handler is deleted. All
+ * of the pending retrievals (if there are more than one) are linked into a
+ * list.
+ */
+
+typedef struct TkSelInProgress {
+    TkSelHandler *selPtr;	/* Handler being executed. If this handler is
+				 * deleted, the field is set to NULL. */
+    struct TkSelInProgress *nextPtr;
+				/* Next higher nested search. */
+} TkSelInProgress;
+
+/*
+ * Chunk size for retrieving selection. It's defined both in words and in
+ * bytes; the word size is used to allocate buffer space that's guaranteed to
+ * be word-aligned and that has an extra character for the terminating NULL.
+ */
+
+#define TK_SEL_BYTES_AT_ONCE 4000
+#define TK_SEL_WORDS_AT_ONCE 1001
+
+/*
+ * Declarations for procedures that are used by the selection-related files
+ * but shouldn't be used anywhere else in Tk (or by Tk clients):
+ */
+
+MODULE_SCOPE TkSelInProgress *TkSelGetInProgress(void);
+MODULE_SCOPE void	TkSelSetInProgress(TkSelInProgress *pendingPtr);
+MODULE_SCOPE void	TkSelClearSelection(Tk_Window tkwin, XEvent *eventPtr);
+MODULE_SCOPE int	TkSelDefaultSelection(TkSelectionInfo *infoPtr,
+			    Atom target, char *buffer, int maxBytes,
+			    Atom *typePtr);
+#ifndef TkSelUpdateClipboard
+MODULE_SCOPE void	TkSelUpdateClipboard(TkWindow *winPtr,
+			    TkClipboardTarget *targetPtr);
+#endif
+
+#endif /* _TKSELECT */