• "dnewbie" <run3 myopera.com> May 26 2012
• "jerro" <a a.com> May 26 2012
• "dnewbie" <run3 myopera.com> May 27 2012
• Andrej Mitrovic <andrej.mitrovich gmail.com> May 27 2012

"dnewbie" <run3 myopera.com> writes:

In C I can write

OPENFILENAME ofn;
ZeroMemory(&ofn, sizeof(ofn));

In D, there is no ZeroMemory. Please help me.

"jerro" <a a.com> writes:

On Sunday, 27 May 2012 at 03:29:17 UTC, dnewbie wrote:
 In C I can write

 OPENFILENAME ofn;
 ZeroMemory(&ofn, sizeof(ofn));

 In D, there is no ZeroMemory. Please help me.


You could use c memset:

import std.c.string;
memset(cast(void*)&ofn, 0, ofn.sizeof);

or this:

(cast(byte*)& a)[0 .. a.sizeof] = 0;

"dnewbie" <run3 myopera.com> writes:

On Sunday, 27 May 2012 at 03:55:58 UTC, jerro wrote:
 On Sunday, 27 May 2012 at 03:29:17 UTC, dnewbie wrote:
 In C I can write

 OPENFILENAME ofn;
 ZeroMemory(&ofn, sizeof(ofn));

 In D, there is no ZeroMemory. Please help me.


 You could use c memset:

 import std.c.string;
 memset(cast(void*)&ofn, 0, ofn.sizeof);

 or this:

 (cast(byte*)& a)[0 .. a.sizeof] = 0;


Thank you.

Andrej Mitrovic <andrej.mitrovich gmail.com> writes:

On 5/27/12, dnewbie <run3 myopera.com> wrote:
 In C I can write

 OPENFILENAME ofn;
 ZeroMemory(&ofn, sizeof(ofn));

 In D, there is no ZeroMemory. Please help me.


I've never had to use this with WinAPI. The default .init value
usually works well, especially if the struct is well-defined, e.g.:

struct Foo
{
    int x;  // default 0-initialized
    float y = 0;  // without this y would be NaN by default
}

I think all bits will be set to 0 for a 'Foo' instance.