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digitalmars.D.learn - OutputDebugString()

reply =?iso-8859-1?Q?Robert_M._M=FCnch?= <robert.muench saphirion.com> writes:
Hi, I want to use the Windows OutputDebugString() which is not defined 
anywhere.

How do I declare such missing Windows API functions myself? And with 
which libaries do I then need to link? Does DMD contain all necessary 
Windows link libs or am I supposed to get them myself?

So, it's not clear what to do if a Windows API function is missing.

And, how can I contribute new declared ones to get them integrated into 
the standard distribution?

-- 
Robert M. Münch
http://www.saphirion.com
smarter | better | faster
Mar 13 2015
next sibling parent reply "Adam D. Ruppe" <destructionator gmail.com> writes:
On Friday, 13 March 2015 at 21:12:52 UTC, Robert M. Münch wrote:

 How do I declare such missing Windows API functions myself?


In the file you want to use it, you can just write

extern(Windows) void OutputDebugStringA(in char*);

and it should work... or whatever the signature is, check msdn, 
and remember the ones that take strings tend to need A or W for 
the ascii or Unicode variants.

dmd comes with a bunch of windows lib link files but not all of 
them. This one should work though. Just add the file, e.g. 
user32.lib, to the compile command line. You can also do

pragma(lib, "user32");

and such in the main D file itself you are building and it will 
add automatically.
Mar 13 2015
parent reply =?iso-8859-1?Q?Robert_M._M=FCnch?= <robert.muench saphirion.com> writes:
On 2015-03-13 21:19:07 +0000, Adam D. Ruppe said:


 In the file you want to use it, you can just write
 
 extern(Windows) void OutputDebugStringA(in char*);
 
 and it should work... or whatever the signature is, check msdn, and 
 remember the ones that take strings tend to need A or W for the ascii 
 or Unicode variants.


Hi Adam, thanks that worked. Pretty easy.

Now, just need to check why I don't see any debug output but that's not 
a DMD issue ;-).

-- 
Robert M. Münch
http://www.saphirion.com
smarter | better | faster
Mar 14 2015
parent reply Jonathan M Davis via Digitalmars-d-learn writes:
On Saturday, March 14, 2015 17:49:10 Robert M. Münch via Digitalmars-d-learn
wrote:

 Now, just need to check why I don't see any debug output but that's not
 a DMD issue ;-).


In case you didn't know, if you're not running the program in visual studio,
you should see the output in in DebugView:

https://technet.microsoft.com/en-us/library/bb896647.aspx

- Jonathan M Davis
Mar 14 2015
parent =?iso-8859-1?Q?Robert_M._M=FCnch?= <robert.muench saphirion.com> writes:
On 2015-03-14 22:55:57 +0000, Jonathan M Davis via Digitalmars-d-learn said:


 In case you didn't know, if you're not running the program in visual studio,
 you should see the output in in DebugView:
 
 https://technet.microsoft.com/en-us/library/bb896647.aspx


Hi, yes I know, nevertheless thanks for letting me know. The problem 
was, that I needed the newest version for Win-10 and than it worked 
again.

DebugView is really a great tool, especially if you want to debug DLLs.

-- 
Robert M. Münch
http://www.saphirion.com
smarter | better | faster
Mar 15 2015
prev sibling next sibling parent "Matt" <webwraith fastmail.fm> writes:
On Friday, 13 March 2015 at 21:12:52 UTC, Robert M. Münch wrote:

 Hi, I want to use the Windows OutputDebugString() which is not 
 defined anywhere.

 How do I declare such missing Windows API functions myself? And 
 with which libaries do I then need to link? Does DMD contain 
 all necessary Windows link libs or am I supposed to get them 
 myself?

 So, it's not clear what to do if a Windows API function is 
 missing.

 And, how can I contribute new declared ones to get them 
 integrated into the standard distribution?


I'm pretty sure the correct way to do it is as follows:

---

import core.sys.windows.windows;

extern (Windows) OutputDebugString( LPCTSTR );
/// Add other externs here

---
Mar 13 2015
prev sibling parent "Kagamin" <spam here.lot> writes:
On Friday, 13 March 2015 at 21:12:52 UTC, Robert M. Münch wrote:

 Hi, I want to use the Windows OutputDebugString() which is not 
 defined anywhere.


The declaration can be already part of WindowsAPI project: 
https://github.com/AndrejMitrovic/WindowsAPI just see it there.


 How do I declare such missing Windows API functions myself? And 
 with which libaries do I then need to link?


This function has rather unique implementation too. Are you sure, 
you don't want to see its MSDN entry?
Mar 13 2015