INFO: Managing Icons Extracted Using ExtractIcon() (95392)
The information in this article applies to:
- Microsoft Windows Software Development Kit (SDK) 3.1
This article was previously published under Q95392
3.10
WINDOWS
kbprg
SUMMARY
The ExtractIcon() API is new to Windows version 3.1. The Window 3.1
Software Development Kit (SDK) "Programmer's Reference, Volume 2:
Functions" description of this function, on page 296, does not address
management of the memory occupied by the icons extracted using
ExtractIcon. This article provides that information.
MORE INFORMATION
When an application calls ExtractIcon(), it passes an hInstance. When that hInstance is terminated, the memory occupied by that icon is
automatically freed.
Applications that extract several icons during their lifetime may not
be able to keep several unused icons in memory. Such applications can
call DestroyIcon to free memory occupied by icons.
If application A needs to pass a handle to an icon to application B in
the system, it should make a copy of the icon with CopyIcon() using the hInstance of application B. This ensures that even if application A
quits while application B is still using the icon, the handle to the
icon passed to application B will still be valid.
| Modification Type: | Minor | Last Reviewed: | 2/11/2005 |
|---|
| Keywords: | kb16bitonly kbinfo KB95392 |
|---|
|