MouseButtons

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dragonslayer008@hotmail.com - 19 Sep 2007 02:14 GMT

Petzolds C# book has code like this:

(mea.Button & MouseButtons.Right != 0)

I try the C++/CLI analog:

if( (e->Button & ::MouseButtons::Left) != 0 )

but get errors:

error C2678: binary '!=' : no operator found which takes a left-hand
operand of type 'System::Windows::Forms::MouseButtons' (or there is no
acceptable conversion)

why?

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SvenC - 19 Sep 2007 07:18 GMT

Hi dragonslayer008,

> Petzolds C# book has code like this:
>
[quoted text clipped - 9 lines]
> operand of type 'System::Windows::Forms::MouseButtons' (or there is no
> acceptable conversion)

Use if((e->Button & ::MouseButtons::Left) == ::MouseButtons::Left) which
uses the same type on both sides of the operator. Otherwise you would need
to cast either of the two sides explicitly.

--
SvenC

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