NAME

XmClipboardLock — a clipboard function that locks the clipboard.

SYNOPSIS

#include <Xm/Xm.h>
#include <Xm/CutPaste.h> int XmClipboardLock (display, window)
Display∗ display;
Windowwindow;

DESCRIPTION

XmClipboardLock locks the clipboard from access by another application until XmClipboardUnlock is called.  All clipboard functions lock and unlock the clipboard to prevent simultaneous access.  This function allows the application to keep the clipboard data from changing between calls to the inquire and other clipboard functions.  The application does not need to lock the clipboard between calls to XmClipboardStartCopy and XmClipboardEndCopy or to XmClipboardStartRetrieve and XmClipboardEndRetrieve. 

The application should lock the clipboard before multiple calls to XmClipboardCopyByName and should unlock the clipboard after completion. 

If the clipboard is already locked by another application, XmClipboardLock returns an error status.  Multiple calls to this function by the same application increases the lock level. 

displaySpecifies a pointer to the Display structure that was returned in a previous call to XOpenDisplay or XtDisplay. 

windowSpecifies 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. 

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.

RELATED INFORMATION

XmClipboardCopyByName(3Xm), XmClipboardEndCopy(3Xm), XmClipboardEndRetrieve(3Xm), XmClipboardStartCopy(3Xm), XmClipboardStartRetrieve(3Xm), and XmClipboardUnlock(3Xm). 

7th Edition