setAlpha exception

kenshiro55 kenshiro55 at
Thu Jul 24 01:08:00 PDT 2008

I tried to use window transparency so I have this code:

Shell shell = new Shell(DWT.SHELL_TRIM);

But I have this error: object.Exception: Access Violation.

I searched the cause and it crashed at this line in Shell.setAlpha:
OS.SetLayeredWindowAttributes (handle, 0, cast(byte)alpha, OS.LWA_ALPHA);

Is it a bug or my environment ?

Tested with dmd 1.0.28, winxp sp2, tango 0.99.6 and dwt-win 2008-07-21.

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