Hi,
Thank you for the suggestions. Your suggestions are working fine and I can
make Toolbars and use common controls.
Thanks again,
Jasbir Chauhan
Jose Manuel Padron Carrillo wrote:
> Hi,
>
> There are several things that are not correct. I'll try to fix them
> all.
>
> --- John <10...@ic...> wrote:
> >
> > I am new to C++ programming and following tutorial from
> > www.winprog.org. Every thing in this tutorial worked fine with the
> > exception of two toolbar examples. Source code for one example is
> > from
> > toolbar_one.zip . Resouce file will need absolute path for bmp file
> > name. In both cases I am getting Linker error:
>
> Does it mean that the resource file gives an error or not?
>
> > f:\codelocal\new
> > folder\newproject\toolbar\toolbar_one.o(.text+0x38f):toolbar_one.c:
> > undefined reference to `InitCommonControls@0'
>
> Mingw compiler doesn't include lib files like VC++. You will have to do
> it manually. Goto Project options and click on Load object files
>
> Look for the file libcomctl32.a in the Lib folder.
>
> >
> > I tried to compile toolbar source code from Dev-C++ example folder (
> > Dev-C++\Examples\MdiApp ) and got following Compiler error:
> >
> >
> > f:\codelocal\new folder\new folder\mdiunit.c: In function `BOOL
> > LoadFile(HWND__ *, CHAR *)':
> > f:\codelocal\new folder\new folder\mdiunit.c:30: warning: converting
> > NULL to non-pointer type
> > f:\codelocal\new folder\new folder\mdiunit.c: In function `BOOL
> > SaveFile(HWND__ *, CHAR *)':
> > f:\codelocal\new folder\new folder\mdiunit.c:62: warning: converting
> > NULL to non-pointer type
> > f:\codelocal\new folder\new folder\mdiunit.c: In function `int
> > WinMain(HINSTANCE__ *, HINSTANCE__ *, CHAR *, int)':
> > f:\codelocal\new folder\new folder\mdiunit.c:163: warning: converting
> > NULL to non-pointer type
>
> This is because you have #define STRICT and therefore you must cast the
> parameters. Don;t worry it's easy.
>
> The lines giving the error are
>
> CreateFile(pszFileName, GENERIC_READ, FILE_SHARE_READ, NULL,
> OPEN_EXISTING, NULL, NULL);
>
> Just replace it with this one
>
> CreateFile(pszFileName, GENERIC_READ, FILE_SHARE_READ,
> (LPSECURITY_ATTRIBUTES)NULL, OPEN_EXISTING,
> (DWORD)NULL, (HANDLE)NULL);
>
> > Linker error:
> > f:\codelocal\new folder\new folder\mdiunit.o(.text+0x323):mdiunit.c:
> > undefined reference to `InitCommonControls@0'
>
> See above
>
> > I don't know what I am doing wrong.
> >
> > I tried to use new command InitCommonControlsEx ( MSND ToolBar Using
> > )
> > but no luck. Also, ICC_BAR_CLASSES which should be defined in
> > commctrl.h
> > (folder Dev-C++\Include\commctrl.h) is not there, all the time it
> > gives
> > the error of undefined. Can some body tell me how to correct the
> > ICC_BAR_CLASSES in file commctrl.h.
>
> #define ICC_BAR_CLASSES 4
>
> Among others, this definition is missing from Mingw header. I got an
> extra header file from someone, but don't remember the exact URL,
> including many features that Mingw does not cover yet.
>
> For some other definitons to work you need to use
>
> #define _WIN32_IE 0x0400 // defines IE version
>
> > I already installed twice the Dev-C++ thinking that I might have
> > corrupted some files, but no difference.
>
> It's not a Dev-C++ problem, it's just Mingw's characteristics
>
> Hope this helps
>
> Chemanuel
>
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