screen_destroy_window_buffers()

Send a request to the composition manager to destory the buffer of the specified window.

Synopsis:

#include <screen/screen.h>
 
int screen_destroy_window_buffers(screen_window_t win)

Since:

BlackBerry 10.0.0

Arguments:

win

The handle of the window whose buffer(s) you want to destroy.

Library:

libscreen (For the qcc command, use the -l screen option to link against this library)

Description:

Function Type: Flushing Execution

This function releases the buffer that was allocated for a window, without destroying the window. If the buffer was created with screen_create_window_buffers(), the memory is released and can be used for other window or pixmap buffers. If the buffer was attached using screen_attach_window_buffer(), the buffer is destroyed but no memory is actually released. In this case the application is responsible for freeing the memory after calling screen_destroy_window_buffer(). Once a window buffer has been destroyed, you can change the format, the usage and the buffer size before creating a new buffer again. The memory that is released by this call is not reserved and can be used for any subsequent buffer allocation by the windowing system.

Returns:

0 if the memory used by the window buffer was freed, or -1 if an error occurred (errno is set).

Last modified: 2014-11-17



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