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XStoreBytes

Section: XLIB FUNCTIONS (3)
Updated: libX11 1.6.3
Index Return to Main Contents
 

NAME

XStoreBytes, XStoreBuffer, XFetchBytes, XFetchBuffer, XRotateBuffers - manipulate cut and paste buffers  

SYNTAX

int XStoreBytes(Display *display, char *bytes, int nbytes);
int XStoreBuffer(Display *display, char *bytes, int nbytes, int buffer);
char *XFetchBytes(Display *display, int *nbytes_return);
char *XFetchBuffer(Display *display, int *nbytes_return, int buffer);
int XRotateBuffers(Display *display, int rotate);
 

ARGUMENTS

buffer
Specifies the buffer in which you want to store the bytes or from which you want the stored data returned.
bytes
Specifies the bytes, which are not necessarily ASCII or null-terminated.
display
Specifies the connection to the X server.
nbytes
Specifies the number of bytes to be stored.
nbytes_return
Returns the number of bytes in the buffer.
rotate
Specifies how much to rotate the cut buffers.
 

DESCRIPTION

The data can have embedded null characters and need not be null-terminated. The cut buffer's contents can be retrieved later by any client calling XFetchBytes.

XStoreBytes can generate a BadAlloc error.

If an invalid buffer is specified, the call has no effect. The data can have embedded null characters and need not be null-terminated.

XStoreBuffer can generate a BadAlloc error.

The XFetchBytes function returns the number of bytes in the nbytes_return argument, if the buffer contains data. Otherwise, the function returns NULL and sets nbytes to 0. The appropriate amount of storage is allocated and the pointer returned. The client must free this storage when finished with it by calling XFree.

The XFetchBuffer function returns zero to the nbytes_return argument if there is no data in the buffer or if an invalid buffer is specified.

XFetchBuffer can generate a BadValue error.

The XRotateBuffers function rotates the cut buffers, such that buffer 0 becomes buffer n, buffer 1 becomes n + 1 mod 8, and so on. This cut buffer numbering is global to the display. Note that XRotateBuffers generates BadMatch errors if any of the eight buffers have not been created.

XRotateBuffers can generate a BadMatch error.  

DIAGNOSTICS

BadAlloc
The server failed to allocate the requested resource or server memory.
BadAtom
A value for an Atom argument does not name a defined Atom.
BadMatch
Some argument or pair of arguments has the correct type and range but fails to match in some other way required by the request.
BadValue
Some numeric value falls outside the range of values accepted by the request. Unless a specific range is specified for an argument, the full range defined by the argument's type is accepted. Any argument defined as a set of alternatives can generate this error.
 

SEE ALSO

XFree(3)
Xlib - C Language X Interface


 

Index

NAME
SYNTAX
ARGUMENTS
DESCRIPTION
DIAGNOSTICS
SEE ALSO


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