Dialogbox did not show up. Please help!!!

Hi,
I am implementing a Win32 DLL project. In this dll I developed a dialogbox.
In order to export the dialogbox, I did the following things.
1. define a function called Test()
int Test() {
return DialogBox(NULL, MAKEINTRESOURCE(IDD_DIALOG),NULL, DlgProc);
}

2. export this Test() function.

The problem I encountered was the dialogbox did not show up. The DialogBox()
returned a -1 indicating it failed to create the dialogbox. So I called
GetLastError() and got the error code 1812, which indicates "The specified
image file did not contain a resource section.".

I am pretty sure the Test() function was successfully exported because I got
some results if I replace the DialogBox() with other functions.

I stuck there for tens of hours so if you have any clues or ideas, please
drop me a line. I deeply appreciate your help.

THanks,

Hu

Norman
Sat Jul 10 20:07:46 CDT 2004

Hu Dong wrote:
> Hi,
> I am implementing a Win32 DLL project. In this dll I developed a dialogbox.
> In order to export the dialogbox, I did the following things.
> 1. define a function called Test()
> int Test() {
> return DialogBox(NULL, MAKEINTRESOURCE(IDD_DIALOG),NULL, DlgProc);
> }
>
> 2. export this Test() function.
>
> The problem I encountered was the dialogbox did not show up. The DialogBox()
> returned a -1 indicating it failed to create the dialogbox. So I called
> GetLastError() and got the error code 1812, which indicates "The specified
> image file did not contain a resource section.".
>
> I am pretty sure the Test() function was successfully exported because I got
> some results if I replace the DialogBox() with other functions.
>
> I stuck there for tens of hours so if you have any clues or ideas, please
> drop me a line. I deeply appreciate your help.
>
> THanks,
>
> Hu
>
>

You must pass the hInstance or your program as the first argument of
DialogBox().

Norm

--
--
To reply, change domain to an adult feline.

Hu
Sat Jul 10 20:35:29 CDT 2004

Thanks for your reply.
I tried to pass the hInstance in but it still does not work. Actually, it is
OK if I let the first parameter be NULL. At least it works in my previous
projects.
Any comments?

Thanks a lot.

Hu

"Norman Bullen" <norm@BlackKittenAssociates.com.INVALID> wrote in message
news:Cp0Ic.11985$oD3.3393@newsread1.news.pas.earthlink.net...
> Hu Dong wrote:
> > Hi,
> > I am implementing a Win32 DLL project. In this dll I developed a
dialogbox.
> > In order to export the dialogbox, I did the following things.
> > 1. define a function called Test()
> > int Test() {
> > return DialogBox(NULL, MAKEINTRESOURCE(IDD_DIALOG),NULL, DlgProc);
> > }
> >
> > 2. export this Test() function.
> >
> > The problem I encountered was the dialogbox did not show up. The
DialogBox()
> > returned a -1 indicating it failed to create the dialogbox. So I called
> > GetLastError() and got the error code 1812, which indicates "The
specified
> > image file did not contain a resource section.".
> >
> > I am pretty sure the Test() function was successfully exported because I
got
> > some results if I replace the DialogBox() with other functions.
> >
> > I stuck there for tens of hours so if you have any clues or ideas,
please
> > drop me a line. I deeply appreciate your help.
> >
> > THanks,
> >
> > Hu
> >
> >
>
> You must pass the hInstance or your program as the first argument of
> DialogBox().
>
> Norm
>
> --
> --
> To reply, change domain to an adult feline.
>

Hu
Sat Jul 10 21:02:46 CDT 2004

I debugged this dll and found the VS6 did not find the value for the symbol
"IDD_DIALOG". But I did include the resource header file! Why?

Thanks!!!
Hu


"Hu Dong" <hdong@ucdavis.edu> wrote in message
news:u0l$23tZEHA.2388@TK2MSFTNGP09.phx.gbl...
> Hi,
> I am implementing a Win32 DLL project. In this dll I developed a
dialogbox.
> In order to export the dialogbox, I did the following things.
> 1. define a function called Test()
> int Test() {
> return DialogBox(NULL, MAKEINTRESOURCE(IDD_DIALOG),NULL, DlgProc);
> }
>
> 2. export this Test() function.
>
> The problem I encountered was the dialogbox did not show up. The
DialogBox()
> returned a -1 indicating it failed to create the dialogbox. So I called
> GetLastError() and got the error code 1812, which indicates "The specified
> image file did not contain a resource section.".
>
> I am pretty sure the Test() function was successfully exported because I
got
> some results if I replace the DialogBox() with other functions.
>
> I stuck there for tens of hours so if you have any clues or ideas, please
> drop me a line. I deeply appreciate your help.
>
> THanks,
>
> Hu
>
>

David
Sat Jul 10 21:05:48 CDT 2004

You should pass the handle of the DLL as the first parameter. I believe if
you pass NULL, Windows searches for the template in the EXE that loaded the
DLL. Use GetModuleHandle to get the handle of the DLL.

David Liebtag

Hu
Sat Jul 10 21:33:31 CDT 2004

You are right. David. Now it works!
At the first beginning, I tried GetModuleHandle() but I passed NULL to
GetModuleHandle(). So I got the handle to the caller. I did not be aware
that I actually need the handle to the DLL!

Thank you! Also I want to thank Norman because he pointed the problem but I
did not pay attention. You both are great.

Hu


"Hu Dong" <hdong@ucdavis.edu> wrote in message
news:u0l$23tZEHA.2388@TK2MSFTNGP09.phx.gbl...
> Hi,
> I am implementing a Win32 DLL project. In this dll I developed a
dialogbox.
> In order to export the dialogbox, I did the following things.
> 1. define a function called Test()
> int Test() {
> return DialogBox(NULL, MAKEINTRESOURCE(IDD_DIALOG),NULL, DlgProc);
> }
>
> 2. export this Test() function.
>
> The problem I encountered was the dialogbox did not show up. The
DialogBox()
> returned a -1 indicating it failed to create the dialogbox. So I called
> GetLastError() and got the error code 1812, which indicates "The specified
> image file did not contain a resource section.".
>
> I am pretty sure the Test() function was successfully exported because I
got
> some results if I replace the DialogBox() with other functions.
>
> I stuck there for tens of hours so if you have any clues or ideas, please
> drop me a line. I deeply appreciate your help.
>
> THanks,
>
> Hu
>
>

Igor
Mon Jul 12 12:35:53 CDT 2004

"Hu Dong" <hdong@ucdavis.edu.INVALID> wrote in message
news:u3sa19uZEHA.2908@TK2MSFTNGP10.phx.gbl
> You are right. David. Now it works!
> At the first beginning, I tried GetModuleHandle() but I passed NULL to
> GetModuleHandle(). So I got the handle to the caller. I did not be
> aware that I actually need the handle to the DLL!

It's best to use HINSTANCE value originally passed to your DllMain. If
somebody renames your DLL, GetModuleHandle won't work anymore.
--
With best wishes,
Igor Tandetnik

"For every complex problem, there is a solution that is simple, neat,
and wrong." H.L. Mencken