CentOS 7.0 - man page for xmclipboardinquirelength (centos section 3)
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XmClipboardInquireLength(library call) XmClipboardInquireLength(library call)
XmClipboardInquireLength -- A clipboard function that returns the length of the stored
int XmClipboardInquireLength (display, window, format_name, length)
Display * display;
char * format_name;
unsigned long * length;
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 0 (zero) in the length
Any format passed by name is assumed to have 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 the window ID of a widget that relates the application window to the
clipboard. The widget's window ID can be obtained through XtWindow. The same
application instance should pass the same window ID to each of the clipboard
functions that it calls.
Specifies the name of the format for the data item.
length Specifies the length of the next data item in the specified format. This argu-
ment equals 0 (zero) if no data is found for the specified format, or if there
is no item on the clipboard.
The function was successful.
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.
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.
XmClipboardCopy(3) and XmClipboardStartCopy(3).
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