Re: WM_NCPAINT - no region to be had - Article 16744 - go-pugleaf

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Re: WM_NCPAINT - no region to be had

#16744

From: JD
Date: Sat, 26 Apr 2003 22:54

22 lines
1775 bytes

"Remy Lebeau \(TeamB\)" <gambit47@yahoo.com> wrote:
>
>"JD" <nospam@nospam.com> wrote in message
>news:3eaafbd2$1@newsgroups.borland.com...
>
>>       DWORD dwCount = GetRegionData( hrgn, 0, NULL );
>>
>> dwCount is always zero
>
>According to the Win32 API documentation:
>
>    "If the function fails, the return value is zero."
>
>Have you tried using GetLastError() to see if it returns why it failed?

GetLastError returns an error code of 87 (decimal) which
translates to: ERROR_INVALID_PARAMETER (The parameter is
incorrect). Zero and NULL are valid according to the docs so
that leaves the HRGN which is supplied by the OS.

~ JD

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