how can D program find it's own executable name on windows ?

[Regan Heath]

On Tue, 29 Jan 2013 15:51:08 -0000, rsk82 <rsk82 at live.com> wrote:

> On Tuesday, 29 January 2013 at 15:46:40 UTC, monarch_dodra wrote:
>>     stdout.writeln(args[0]);
>
> It doesn't work while I have WinMain function that then calls myWinMain,  
> as it is winsamp.d
>
> Error: undefined identifier args, did you mean struct CArgs?

Try..

1. Add these lines to the top of winsamp.d (after other includes)

import core.sys.windows.windows;
import std.utf;

string commandLine = null;

2. Add these lines to myWinMain (after variable declarations, before  
wndclass.style..)

	wchar[260] moduleName;
	uint n = GetModuleFileNameW(null, moduleName.ptr, moduleName.length);
	commandLine = toUTF8(moduleName[0..n]);

3. In WindowProc (I had to add nothrow to my definition BTW) change this  
line

TextOutA(dc, r.right / 2, r.bottom / 2, text.toStringz, text.length);

to read:

TextOutA(dc, r.right / 2, r.bottom / 2, commandLine.toStringz,  
commandLine.length);

4. Compile/run it, i.e. dmd -run winsamp.d

R

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