🚀 go-pugleaf

In article <39CA60B0.DC1700A2@mindspring.com>, got@mindspring.com 
wrote:

>Howdy All,
>
>I was recompiling my CPLAT sources (from Ken Stahlman) under CWP6 and
>encountered several places in the code where I am now receiving this
>error. (Don't worry about what a CP_Region is...suffice it to say its a
>valid thing)s:
>
>    Error: illegal implicit conversion from 'CP_Region' to 'CP_Region &'
>
>Here is the snippet of code that causes the error:
>
>    OnDraw( CP_Region(fPlatformWindow->visRgn) );
>
>Now, if I change the code to read like this:
>
>    CP_Region cpr(fPlatformWindow->visRgn);
>    OnDraw( cpr);
>
>Then it compiles fine.  I wonder why this is so???

In the first case the CP_Region is a temporary, and is therefore a 
const. In the second case it's not. If you declared the second one as 
const CP_Region you'd get the same error.

You should probably change OnDraw to take a const CP_Region&, if it 
doesn't modify the region.

Hth,

meeroh
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