please dont rip this site Prev Next

LocalLock info  Overview  Group

The LocalLock function locks a local memory object and returns a pointer to the first byte of the object’s memory block. The memory block associated with a locked memory object cannot be moved or discarded. For memory objects allocated with the LMEM_MOVEABLE flag, the function increments the object’s lock count.

LPVOID LocalLock(

    HLOCAL hMem 

// handle of local memory object

   );

Parameters

hMem
Identifies the local memory object. This handle is returned by either the LocalAlloc or LocalReAlloc function.

Return Values

If the function succeeds, the return value is a pointer to the first byte of the memory block.

If the function fails, the return value is NULL. To get extended error information, call GetLastError.

Remarks

The internal data structures for each memory object include a lock count that is initially zero. For movable memory objects, LocalLock increments the count by one, and the LocalUnlock function decrements the count by one. For each call that a process makes to LocalLock for an object, it must eventually call LocalUnlock. Locked memory will not be moved or discarded unless the memory object is reallocated by using the LocalReAlloc function. The memory block of a locked memory object remains locked in memory until its lock count is decremented to zero, at which time it can be moved or discarded.

Memory objects allocated with the LMEM_FIXED flag always have a lock count of zero. For these objects, the value of the returned pointer is equal to the value of the specified handle.

If the specified memory block has been discarded or if the memory block has a zero-byte size, this function returns NULL.

Discarded objects always have a lock count of zero.

See Also

LocalAlloc, LocalFlags, LocalReAlloc, LocalUnlock


file: /Techref/os/win/api/win32/func/src/f54_10.htm, 3KB, , updated: 2000/4/7 11:19, local time: 2024/12/25 12:51,
TOP NEW HELP FIND: 
13.58.232.94:LOG IN

 ©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it! / MAKE!

<A HREF="http://ecomorder.com/techref/os/win/api/win32/func/src/f54_10.htm"> LocalLock</A>

After you find an appropriate page, you are invited to your to this massmind site! (posts will be visible only to you before review) Just type a nice message (short messages are blocked as spam) in the box and press the Post button. (HTML welcomed, but not the <A tag: Instead, use the link box to link to another page. A tutorial is available Members can login to post directly, become page editors, and be credited for their posts.


Link? Put it here: 
if you want a response, please enter your email address: 
Attn spammers: All posts are reviewed before being made visible to anyone other than the poster.
Did you find what you needed?

 

Welcome to ecomorder.com!

 

Welcome to ecomorder.com!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .