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digitalmars.D.learn - how can D program find it's own executable name on windows ?

reply "rsk82" <rsk82 live.com> writes:
Are there any build in function or must I resort to winapi ?
Jan 29 2013
next sibling parent reply "monarch_dodra" <monarchdodra gmail.com> writes:
On Tuesday, 29 January 2013 at 15:33:29 UTC, rsk82 wrote:

 Are there any build in function or must I resort to winapi ?


args[0]?

//----
import std.stdio;
void main(string[] args)
{
     stdout.writeln(args[0]);
}
//----
Jan 29 2013
parent reply "rsk82" <rsk82 live.com> writes:
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?
Jan 29 2013
next sibling parent "Regan Heath" <regan netmail.co.nz> writes:
On Tue, 29 Jan 2013 15:51:08 -0000, rsk82 <rsk82 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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Jan 29 2013
prev sibling parent "Mike Parker" <aldacron gmail.com> writes:
On Tuesday, 29 January 2013 at 15:51:09 UTC, rsk82 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?


If you pass the following on the command line:

-L/SUBSYSTEM:windows:5

You can get rid of your WinMain function and use a standard main, 
while still getting a "windowed" app instead of a console app. 
Dropping the :5 would allow you to support Windows 9x, but DMD 
doesn't (or isn't going to) support that anymore anyway. I always 
add :5 for XP and higher.

When running with main, DRuntime stores the args, so you can 
access them anywhere in your program by importing core.runtime 
and accessing the Runtime.args property. I had assumed that held 
true when WinMain was used, but after scanning through the source 
I don't see that it is.
Jan 29 2013
prev sibling parent n00b <n00b nospam.com> writes:
Le 29/01/2013 10:33, rsk82 a écrit :

 Are there any build in function or must I resort to winapi ?


int main(string[] argv)
{
	writeln(argv[0] ~ " is what you are looking for");
}

^^
Jan 29 2013