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compiler error?

Started by PPCThug Dec 21, 2002 at 12:37 AM 8 replies 300+ views

Original Post

Dec 21, 2002 at 12:37 AM

when I try to compile my program I get only one error message in the ariea that compile errors occur <89 work4.cpp warning: converting NULL to non-pointer type> this happens in reference to CreateWindowEx that has four NULL''s in it, now when I try to compile a window comes up called "compiler and linker output" inside that window it says g++: file path prefix `E:\DEV-C_~1\BIN\'' never used g++: e:\dev-c++\myproject\ddraw.lib: linker input file unused since linking not done what kind of error is this? and how do I fix it? if you need the code I will post it.

Bloodshed Dev-C++ 4.01 DX 8.0a DX SDK 6.1 win98 #define WIN32_LEAN_AND_MEAN the Particle Projection Cannon fires a shimmering blue bolt, much like a cross between lightning and a sine wave that ripples along its path.

smart_idiot

Dec 21, 2002 at 2:35 AM

You probably have a NULL

CreateWindowEx(Here, __, __, here, here, here, here, or here, __, __, __, __);

PPCThug

Dec 21, 2002 at 3:01 AM

I have another program that has the same warning and it compiles fine! here is more stuff frome the window that pops up

e:\dev-c++\myproject\project4\work4.cpp: In function `int WinMain(HINSTANCE__ *, HINSTANCE__ *, CHAR *, int)'':
e:\dev-c++\myproject\project4\work4.cpp:89: warning: converting NULL to non-pointer type
g++: e:\dev-c++\myproject\ddraw.lib: linker input file unused since linking not done

and here is the createwindow function(I still don''t think this is the problem)

  
hwnd = CreateWindowEx(NULL,
                      "WINCLASS1",
                      "game experement",
                      WS_OVERLAPPEDWINDOW | WS_VISIBLE,
                      200,200,
                      400,400,
                      NULL,
                      NULL,
                      hinstance,
                      NULL)))

Bloodshed Dev-C++ 4.01
DX 8.0a DX SDK 6.1
win98
#define WIN32_LEAN_AND_MEAN
the Particle Projection Cannon fires a shimmering blue bolt, much like a cross between lightning and a sine wave that ripples along its path.

rotos

Dec 21, 2002 at 3:38 AM

The NULL thing is you passing null as the first argument to CreateWindowEx, which is a number, not a pointer, so pass 0.

PPCThug

Dec 21, 2002 at 1:17 PM

that got rid of the null problem but I still get this
g++: file path prefix `E:\DEV-C_~1\BIN\'' never used
g++: e:\dev-c++\myproject\ddraw.lib: linker input file unused since linking not done

and it still does not compile!

Bloodshed Dev-C++ 4.01
DX 8.0a DX SDK 6.1
win98
#define WIN32_LEAN_AND_MEAN
the Particle Projection Cannon fires a shimmering blue bolt, much like a cross between lightning and a sine wave that ripples along its path.

MindCode

Dec 21, 2002 at 1:32 PM

Anything that comes with the *.lib extention is a microsoft library file (ddraw.lib), and apparently your using Dev-C++. What you want is to find the MinGW version of the DirectX SDK (libddraw.a).

PPCThug

Dec 21, 2002 at 7:08 PM

after hours of searching the web I found libddraw.a in a folder in dev-c++ directory! I removed ddraw.lib from my project and added libddraw.a and yet I still get the same problem!

g++: file path prefix `E:\DEV-C_~1\BIN\'' never used
g++: e:\dev-c++\lib\libddraw.a: linker input file unused since linking not done

Bloodshed Dev-C++ 4.01
DX 8.0a DX SDK 6.1
win98
#define WIN32_LEAN_AND_MEAN
the Particle Projection Cannon fires a shimmering blue bolt, much like a cross between lightning and a sine wave that ripples along its path.

smart_idiot

Dec 21, 2002 at 7:19 PM

The ''E:\DEV-C_~1\BIN'' probably shouldn''t be there, (did you add it to the configuration?), change ''e:\dev-c++\lib\libddraw.a'' to just ''-lddraw'', and if it isn''t linking, then maybe you''re trying to create a library instead of a gui/console/dll.

PPCThug

Dec 21, 2002 at 8:02 PM

I didn''t add ''E:\DEV-C_~1\BIN'' and the closest thing to it is E:\DEV-C++\Bin\ which is the default bin directory, there is no libddraw just libddraw.a which I added to my project from a file window

Bloodshed Dev-C++ 4.01
DX 8.0a DX SDK 6.1
win98
#define WIN32_LEAN_AND_MEAN
the Particle Projection Cannon fires a shimmering blue bolt, much like a cross between lightning and a sine wave that ripples along its path.

PPCThug

Dec 22, 2002 at 5:18 PM

any help? any thing?

Bloodshed Dev-C++ 4.01
DX 8.0a DX SDK 6.1
win98
#define WIN32_LEAN_AND_MEAN
the Particle Projection Cannon fires a shimmering blue bolt, much like a cross between lightning and a sine wave that ripples along its path.

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