dev-cpp-users

[Dev-C++] How do I call a Windows function?

[Andrew S K. (tb) <aka...@gm...>]

My program has the following:

#include <windows.h>

And later on,
        LineTo( hDC, sx+2, sy+h+2 );

And when I link, I get the error:
  [Linker error] undefined reference to `LineTo@12'

NOTE: I am creating my own DLL and I want it to access the Windows DLL.

A. K.

Re: [Dev-C++] How do I call a Windows function?

[Per W. <pw...@ia...>]

Not sure what you mean.

You say that you get the error when you are linking, so are you bulding an
EXE file or a DLL?

The linking step is for an EXE file, and then you must add a reference to
used libraries - this also includes any Windows libraries used. It is only
the RTL libraries part of the language that the linker may pick up
automatically.

/pwm

On Thu, 14 May 2009, Andrew S Katz (tb) wrote:

> My program has the following:
>
> #include <windows.h>
>
> And later on,
>         LineTo( hDC, sx+2, sy+h+2 );
>
> And when I link, I get the error:
>   [Linker error] undefined reference to `LineTo@12'
>
> NOTE: I am creating my own DLL and I want it to access the Windows DLL.
>
> A. K.
>
>
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Re: [Dev-C++] How do I call a Windows function?

[Andrew S K. (tb) <aka...@gm...>]

Replying to my own thread to say I found the answer.

It is simple - http://www.uniqueness-template.com/devcpp/ This site 
tells me:

# Go to "Project" menu and choose "Project Options" (or just press ALT+P).
# Go to the "Parameters" tab
# In the "Linker" field, enter the following text:
-lgdi32

Andy

Andrew S Katz (tb) said the following on 5/14/2009 11:40 PM:
> My program has the following:
>
> #include <windows.h>
>
> And later on,
>        LineTo( hDC, sx+2, sy+h+2 );
>
> And when I link, I get the error:
>  [Linker error] undefined reference to `LineTo@12'
>
> NOTE: I am creating my own DLL and I want it to access the Windows DLL.
>
> A. K.
>
>