Need to know if a exe file contains at least an icon

Question

I need to know if a exe file contains at least one icon. A fast way, if that's possible. I tried with PrivateExtractIcons and it works, but only for 32 bit exe files.
It's not working for 64 bit exe files.
I need this to work with any exe file in any Windows >= XP (x86 and x64).

I'm using Delphi 2009.

score 6 · Accepted Answer · answered Sep 21 '11 at 11:46

6

Call LoadLibraryEx passing LOAD_LIBRARY_AS_DATAFILE or LOAD_LIBRARY_AS_IMAGE_RESOURCE.
Call EnumResourceTypes to check if the module has any icon resources.

Note that this is not exhaustive since some applications (e.g. modern Office) store their image assets in custom form and not icon resources.

answered Sep 21 '11 at 11:46

David Heffernan

601,492
42
1,072
1,490

It is exhaustive, `RT_ICON` and `RT_GROUP_ICON` with `EnumResourceNames` is enough. Or simply `ExtractIcon(..., -1) > 0` – Premature Optimization Sep 21 '11 at 17:13
@downvoter sure it's exhaustive if the icons are stored as resources. My point is that sometimes apps store their assets not in resources. – David Heffernan Sep 21 '11 at 18:08
That's bold point. How would you know if two randomly selected bitmap resources do not comprise an icon? – Premature Optimization Sep 21 '11 at 20:08
@DavidB, there is no need for loop enumerating all of resource types. Types are known in advance. – Premature Optimization Sep 21 '11 at 20:15
@downvoter In office they are not stored as bitmap resources either. They are in some private form. – David Heffernan Sep 21 '11 at 21:37
*sigh* Suppose, we detected what file contains 42 of those "icons-but-not-much". Which status should we report to caller? `False`? `True`? `0.9 * True`? – Premature Optimization Sep 22 '11 at 10:26

Need to know if a exe file contains at least an icon

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