XmClipboardInquireLength(Xm) UNIX System V
NAME
XmClipboardInquireLength - a clipboard function that returns
the length of the stored data.
SYNOPSIS
#include <Xm/Xm.h>
#include <Xm/CutPaste.h>
int XmClipboardInquireLength (display, window, format_name,
length)
Display * display;
Window window;
char * format_name;
unsigned long* length;
DESCRIPTION
XmClipboardInquireLength returns the length of the data
stored under a specified format name for the clipboard data
item. If no data is found for the specified format, or if
there is no item on the clipboard, this function returns a
value of zero.
Any format passed by name is assumed to have the length
passed in a call to XmClipboardCopy, even though the data
has not yet been transferred to the clipboard in that
format.
display Specifies a pointer to the Display structure
that was returned in a previous call to
XOpenDisplay or XtDisplay.
window Specifies a widget's window ID that relates the
application window to the clipboard. The
widget's window ID can be obtained by using
XtWindow. The same application instance should
pass the same window ID to each of the clipboard
functions that it calls.
format_name Specifies the name of the format for the data
item.
length Specifies the length of the next data item in
the specified format. This argument equals zero
if no data is found for the specified format, or
if there is no item on the clipboard.
RETURN VALUE
ClipboardSuccess
The function is successful.
ClipboardLocked
The function failed because the clipboard was
locked by another application. The application
can continue to call the function again with the
same parameters until the lock goes away. This
gives the application the opportunity to ask if
the user wants to keep trying or to give up on
the operation.
ClipboardNoData
The function could not find data on the
clipboard corresponding to the format requested.
This could occur because the clipboard is empty;
there is data on the clipboard but not in the
requested format; or the data in the requested
format was passed by name and is no longer
available.
RELATED INFORMATION
XmClipboardCopy(Xm) and XmClipboardStartCopy(Xm).
(printed 2/14/90) XmClipboardInquireLength(Xm)