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

ID: Q11606

The information in this article applies to:

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.


Keywords          : kbNTOS kbGrpUser kbWinOS kbWndw kbWndwClass kbWndwProp 
Version           : 
Platform          : 
Issue type        : kbinfo

Last Reviewed: March 4, 1999