Eine MP4-Sound-Datei ausgeben

[Dalai]

Zitat von HPB:

ShellExecute gibt gar nichts zurück.

Doch:

Zitat von Win32 API Hilfe zu ShellExecute:

Return Values

If the function succeeds, the return value is the instance handle of the application that was run, or the handle of a dynamic data exchange (DDE) server application.
If the function fails, the return value is an error value that is less than or equal to 32. The following table lists these error values:
[...]

MfG Dalai