Index for Section 9

Alphabetical listing for I

Bottom of page

init_cursor_handle(9r)
NAME
  init_cursor_handle - Graphics: Initializes the cursor handle for the
  specified graphics card

SYNOPSIS
  caddr_t init_cursor_handle(
	  caddr_t cursor_handle,
	  caddr_t address,
	  int unit,
	  int type );

ARGUMENTS
  cursor_handle
      Specifies the virtual address (handle) of device-specific information.
      Typically this is a pointer to a private data structure that may
      contain information such as the address of the hardware, state
      information, and other information that may be shared between drivers.
      The Workstation Subsystem allows separate handles for the cursor,
      colormap, and the screen functions.

  address
      Specifies the virtual address of the cursor_handle argument.

  unit
      Specifies the unit number of the controller that the graphics card is
      attached to.

  type
      Specifies the type of graphics card.

DESCRIPTION
  The init_cursor_handle function initializes the cursor_handle argument for
  the cursor for each graphics device driver.

RETURN VALUES
  On success, the init_cursor_handle function returns a pointer to a cursor
  handle.  This pointer is NULL if an error occurs.

EXAMPLES
  The following code is from the Compaq implementation of init_cursor_handle
  in the myvga example driver:

       caddr_t
       myvga_init_cursor_handle(caddr_t cursor_handle,
				caddr_t address,
				int unit,
				int type)
       {
	   struct myvga_type *scp =
		     ((struct myvga_type **)cursor_handle)[unit];

	   if (myvga_developer_debug)
	       printf("myvga_cursor_init_cursor_handle: entry\n");

	   return (caddr_t)scp ;
       }

FILES
  /usr/sys/include/sys/workstation.h

  /usr/sys/include/sys/wsdevice.h

SEE ALSO
  Data Structures: ws_cursor_functions(9s)

Index for Section 9

Alphabetical listing for I

Top of page