Using EnumWindows in C++Builder

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3 total messages Started by Dan Wed, 28 Feb 2007 17:16

#2400

Author: Dan
Date: Wed, 28 Feb 2007 17:16

16 lines
1456 bytes

Hi, I am trying to use the EnumWindows function in a VCL application, 
however, I am getting an error:

"[C++ Error] Main.cpp(106): E2034 Cannot convert 'int (__stdcall *)(void 
*,long)' to 'int (__stdcall *)()'"

The call looks like this:
     EnumWindows(EnumWindowsProc, NULL);

My EnnumWindowsProc function looks like this:
     BOOL CALLBACK EnumWindowsProc(HANDLE hWnd, LPARAM lparam);

Which, I think, matches the Win32 Programming Reference.  The code 
compiles if I remove the parameters from the EnumWindowsProc function; 
however, then I don't know how to get a handle to the hWnd being 
enumerated.  What am I doing wrong?

Re: Using EnumWindows in C++Builder

#2401

Author: Remy Lebeau (TeamB)
Date: Wed, 28 Feb 2007 17:27

19 lines
1365 bytes

"Dan" <Dan@do.not.spam> wrote in message
news:45e5b922$1@newsgroups.borland.com...

> Hi, I am trying to use the EnumWindows function in a VCL
application,
> however, I am getting an error:
>
> "[C++ Error] Main.cpp(106): E2034 Cannot convert 'int (__stdcall
*)(void
> *,long)' to 'int (__stdcall *)()'"

You need to type-cast the function pointer that you are passing in,
ie:

    EnumWindows((WNDENUMPROC )EnumWindowsProc, NULL);


Gambit

Re: Using EnumWindows in C++Builder

#2404

Author: Dan
Date: Wed, 28 Feb 2007 18:47

3 lines
1013 bytes

> You need to type-cast the function pointer that you are passing in,
> ie:
How soon I forget the basics.. thanks

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