I use Win32 SHGetFileInfo to get a handle to the icon belonging to a certain file. There are a lot of descriptions how to do this, also on stackoverflow, for instance: Get icons used by shell
After calling the function you have a struct with the handle to the Icon. Using the static method Icon.FromHandle I can convert it to an object of class System.Drawing.Icon. This class implements System.IDisposable. Proper usage would be like:
using (Icon icon = Icon.FromHandle(shFileInfo.hIcon))
{
// do what you need to do with the icon
}
Upon leaving the using statement the icon object is disposed.
MSDN warns in the description of Icon.FromHandle (click to view):
When using this method, you must dispose of the original icon by using the DestroyIcon method in the Win32 API to ensure that the resources are released.
And in Icon.Dispose (click to view)
Releases all resources used by this Icon.
Question:
Is it enough to Dispose() the object, or should I call both Dispose() and DestroyIcon, or maybe call DestroyIcon instead of Disposing the object?
See Question&Answers more detail:
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