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Tk_ClipboardClear(3) Tk Library Procedures Tk_ClipboardClear(3) ________________________________________________________________________________ NAME Tk_ClipboardClear, Tk_ClipboardAppend - Manage the clipboard SYNOPSIS #include <tk.h> int Tk_ClipboardClear(interp, tkwin) int Tk_ClipboardAppend(interp, tkwin, target, format, buffer) ARGUMENTS Tcl_Interp *interp (in) Interpreter to use for reporting er- rors. Tk_Window tkwin (in) Window that determines which dis- play's clipboard to manipulate. Atom target (in) Conversion type for this clipboard item; has same meaning as target ar- gument to Tk_CreateSelHandler. Atom format (in) Representation to use when data is retrieved; has same meaning as for- mat argument to Tk_CreateSelHandler. const char *buffer (in) Null terminated string containing the data to be appended to the clipboard. ________________________________________________________________________________ DESCRIPTION These two procedures manage the clipboard for Tk. The clipboard is typi- cally managed by calling Tk_ClipboardClear once, then calling Tk_Clipboard- Append to add data for any number of targets. Tk_ClipboardClear claims the CLIPBOARD selection and frees any data items previously stored on the clipboard in this application. It normally re- turns TCL_OK, but if an error occurs it returns TCL_ERROR and leaves an er- ror message in interpreter interp's result. Tk_ClipboardClear must be called before a sequence of Tk_ClipboardAppend calls can be issued. Tk_ClipboardAppend appends a buffer of data to the clipboard. The first buffer for a given target determines the format for that target. Any suc- cessive appends for that target must have the same format or an error will be returned. Tk_ClipboardAppend returns TCL_OK if the buffer is success- fully copied onto the clipboard. If the clipboard is not currently owned by the application, either because Tk_ClipboardClear has not been called or because ownership of the clipboard has changed since the last call to Tk_ClipboardClear, Tk_ClipboardAppend returns TCL_ERROR and leaves an error message in the result of interpreter interp. In order to guarantee atomicity, no event handling should occur between Tk_ClipboardClear and the following Tk_ClipboardAppend calls (otherwise someone could retrieve a partially completed clipboard or claim ownership away from this application). Tk_ClipboardClear may invoke callbacks, including arbitrary Tcl scripts, as a result of losing the CLIPBOARD selection, so any calling function should take care to be re-entrant at the point Tk_ClipboardClear is invoked. KEYWORDS append, clipboard, clear, format, type Tk 4.0 Tk_ClipboardClear(3)
NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | KEYWORDS
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