LoadCursor with ani resources   

Hi,

I have some problems with the Win32 LoadCursor() function when loading an 
animated cursor resource.

If I load an ani cursor several times in a row (eg. 100 times) with 
LoadCursor(hInstance,"AniResource"), where the AniResource is linked into the 
exe file as a anicursor resource, the function gives erratic windows 
behaviour. Sometimes window background is not redrawn, at other times some 
random background is frozen in the windows. It's not only the application 
which loads the anicursor that is affected, but somtimes windows in other 
apps are affected too. I've seen the problem on Vista x64, Win 2003 and Win 
XP x86.

The Win32 documentation states that I don't need to free a cursor resource 
after loading, so after the initial LoadCursor, Win32 is supposed to return 
the same handle over and over again. If I use a static cursor rersource 
(.cur), there are no problems at all.

Any ideas?

date: Sun, 6 Apr 2008 10:57:00 -0700   author:   donald

Re: LoadCursor with ani resources   

>I have some problems with the Win32 LoadCursor() function when loading an 
>animated cursor resource.
>
>If I load an ani cursor several times in a row (eg. 100 times) with 
>LoadCursor(hInstance,"AniResource"), where the AniResource is linked into the 
>exe file as a anicursor resource, the function gives erratic windows 
>behaviour. Sometimes window background is not redrawn, at other times some 
>random background is frozen in the windows. It's not only the application 
>which loads the anicursor that is affected, but somtimes windows in other 
>apps are affected too. I've seen the problem on Vista x64, Win 2003 and Win 
>XP x86.
>
>The Win32 documentation states that I don't need to free a cursor resource 
>after loading, so after the initial LoadCursor, Win32 is supposed to return 
>the same handle over and over again. If I use a static cursor rersource 
>(.cur), there are no problems at all.

The symptoms you describe sound like leaked resources, so what happens
if you use DestroyCursor - does it succeed or not, an does it resolve
your issue?

Have you tried using LoadImage rather than LoadCursor?

Dave

date: Sun, 06 Apr 2008 21:10:21 +0100   author:   David Lowndes lid