dev-cpp-users

Re: [Dev-C++] ANSI C++ forbids implicit conversion from "void*"

[metalseb <met...@fr...>]

Thanx Elizabeth. I've already tried this solution but I can get no better results.

The errors occurs here :

hHyperLinkWnd= CreateWindowEx(dwExStyle,
		wcex.lpszClassName,
		"",
		dwStyle,
		HypLinkData.cx,HypLinkData.cy,
		size.cx,size.cy,
		hWndParent,
		NULL,
		wcex.hInstance,
		this); <- Here at the "this" pointer passing, compiling crashes

I've tried to pass "NULL" as parameter but same results.

I'm really stuck with this.

Anybody ever tried to compile this class under DevCpp ?

Kind regards

--
Seb

Re: [Dev-C++] ANSI C++ forbids implicit conversion from "void*"

[Daniel G. <sp...@ho...>]

What about *this  instead of this ?


>From: metalseb <met...@fr...>
>Reply-To: met...@fr...
>To: Elizabeth Barham <sog...@ya...>,devcpp mailing list 
><dev...@li...>
>Subject: Re: [Dev-C++] ANSI C++ forbids implicit conversion from "void*"
>Date: Tue, 01 Oct 2002 09:17:46 +0200
>
>Thanx Elizabeth. I've already tried this solution but I can get no better 
>results.
>
>The errors occurs here :
>
>hHyperLinkWnd= CreateWindowEx(dwExStyle,
>		wcex.lpszClassName,
>		"",
>		dwStyle,
>		HypLinkData.cx,HypLinkData.cy,
>		size.cx,size.cy,
>		hWndParent,
>		NULL,
>		wcex.hInstance,
>		this); <- Here at the "this" pointer passing, compiling crashes
>
>I've tried to pass "NULL" as parameter but same results.
>
>I'm really stuck with this.
>
>Anybody ever tried to compile this class under DevCpp ?
>
>Kind regards
>
>--
>Seb
>
>
>
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Re: [Dev-C++] ANSI C++ forbids implicit conversion from "void*"

[Graeme F. <gr...@dr...>]

Hi, you need to typecast the pointer.

the last parameter is of type lParam so you need to modify you code as
follows (LPARAM)this.

>you wrote...
>The errors occurs here :
>
>hHyperLinkWnd= CreateWindowEx(dwExStyle,
>                wcex.lpszClassName,
>                "",
>                dwStyle,
>                HypLinkData.cx,HypLinkData.cy,
>                size.cx,size.cy,
>                hWndParent,
>                NULL,
>                wcex.hInstance,
-->        (LPARAM)this); <- Here at the "this" pointer passing, compiling
crashes

Re: [Dev-C++] ANSI C++ forbids implicit conversion from "void*"

[metalseb <met...@fr...>]

02/10/02 19:33:09, "Graeme Foster" <gr...@dr...> wrote :

>Hi, you need to typecast the pointer.
>
>the last parameter is of type lParam so you need to modify you code as
>follows (LPARAM)this.

I've tried everything I could. Even casting to a (void*) pointer. Impossible to compile.

Many thanks to all for help however...

--
Seb

Re: [Dev-C++] ANSI C++ forbids implicit conversion from "void*"

[Elizabeth B. <sog...@ya...>]

metalseb <met...@fr...> writes:
> 
> The errors occurs here :
> 
> hHyperLinkWnd= CreateWindowEx(dwExStyle,
> 		wcex.lpszClassName,
> 		"",
> 		dwStyle,
> 		HypLinkData.cx,HypLinkData.cy,
> 		size.cx,size.cy,
> 		hWndParent,
> 		NULL,
> 		wcex.hInstance,
> 		this); <- Here at the "this" pointer passing, compiling crashes
> 
> I've tried to pass "NULL" as parameter but same results.

Are you still stuck with this?

My book says CreateWindowEx is:

CreateWindowEx(DWORD ExStyle,
		LPCTSTR Classname,
		LPCSTR WindowsName,
		DWORD Style,
		int X,
		int Y,
		int Width,
		int Height,
		HWND hParent,
		LPCTSTR hMenu,
		HINSTANCE hInstance,
		LPVOID Param);

I'm surprised that casting each parameter explicitly is not working.

Elizabeth