INFO: Use of Allocations w/ cbClsExtra & cbWndExtra in Windows (11606)



The information in this article applies to:

  • Microsoft Platform Software Development Kit (SDK) 1.0

This article was previously published under Q11606

SUMMARY

The following is an explanation of the use of the allocations with cbClsExtra and cbWndExtra?:
  • cbClsExtra: Extra bytes to allocate to CLASS data structure in USER.EXE local heap when RegisterClass() is called. Accessed by Get/Set CLASS Word/Long ();.
  • cbWndExtra: Extra bytes to allocate to WND data structure in USER.EXE local heap when CreateWindow() is called. Accessed by Get/Set WND Word/Long ();.
You can use these structures at your discretion and for any purpose you desire.

Modification Type:MinorLast Reviewed:7/11/2005
Keywords:kbinfo kbWndwClass kbWndwProp KB11606