Unable to use RegisterClass(&WndClass);

[Craig Chandler]

when i use the RegisterClass(&WndClass); under wine the call fails. I'm
using it to sub class the button class. Does wine not support this?

Interdynamics Web Page : http://www.interdynamics.com

[Dmitry Timoshkov]

"Craig Chandler"  wrote:
> when i use the RegisterClass(&WndClass); under wine the call fails. I'm
> using it to sub class the button class. Does wine not support this?

As I already wrote in the newsgroup: please provide the source of your code.
--
Dmitry.

[Craig Chandler]

WNDCLASS WndClass;

GetClassInfo(NULL, IF_BUTTON_NAME, &WndClass);

WndClass.lpszClassName = IF_BUTTON_NAME;
  WndClass.hInstance     = hInstance;
  WndClass.hbrBackground = (HBRUSH)GetStockObject( LTGRAY_BRUSH );

WndClass.cbWndExtra    = kIFWNDEXTRA;

IF_BUTTON_PROC         = WndClass.lpfnWndProc;
  WndClass.lpfnWndProc   = ButtonWndProcBridge;

return RegisterClass(&WndClass);

where IF_BUTTON_NAME = "button"

"Craig Chandler"  wrote:
> when i use the RegisterClass(&WndClass); under wine the call fails. I'm
> using it to sub class the button class. Does wine not support this?

As I already wrote in the newsgroup: please provide the source of your code.
--
Dmitry.

[Dmitry Timoshkov]

"Craig Chandler"  wrote:
> WNDCLASS WndClass;
>
> GetClassInfo(NULL, IF_BUTTON_NAME, &WndClass);
>
> WndClass.lpszClassName = IF_BUTTON_NAME;

Use here different name for your own class. For instance "my_button"
> WndClass.hInstance     = hInstance;
>   WndClass.hbrBackground = (HBRUSH)GetStockObject( LTGRAY_BRUSH );
>
> WndClass.cbWndExtra    = kIFWNDEXTRA;
>
> IF_BUTTON_PROC         = WndClass.lpfnWndProc;
>   WndClass.lpfnWndProc   = ButtonWndProcBridge;
>
> return RegisterClass(&WndClass);
>
> where IF_BUTTON_NAME = "button"

Are you sure that the code above works under Windows?

--
Dmitry.

[Craig Chandler]

positive on the code working under all forms of windows (95, 98, me, nt,
2k), has been since 1997

-----Original Message-----
From: Dmitry Timoshkov [mailto:[e-mail]]
Sent: Friday, 10 August 2001 13:02
To: Craig Chandler
Cc: [e-mail]
Subject: Re: Unable to use RegisterClass(&WndClass);

"Craig Chandler"  wrote:
> WNDCLASS WndClass;
>
> GetClassInfo(NULL, IF_BUTTON_NAME, &WndClass);
>
> WndClass.lpszClassName = IF_BUTTON_NAME;

Use here different name for your own class. For instance "my_button"
> WndClass.hInstance     = hInstance;
>   WndClass.hbrBackground = (HBRUSH)GetStockObject( LTGRAY_BRUSH );
>
> WndClass.cbWndExtra    = kIFWNDEXTRA;
>
> IF_BUTTON_PROC         = WndClass.lpfnWndProc;
>   WndClass.lpfnWndProc   = ButtonWndProcBridge;
>
> return RegisterClass(&WndClass);
>
> where IF_BUTTON_NAME = "button"

Are you sure that the code above works under Windows?

--
Dmitry.

[Dmitry Timoshkov]

"Craig Chandler"  wrote:
> positive on the code working under all forms of windows (95, 98, me, nt,
> 2k), has been since 1997

That probably means that global/local atom management in Wine is broken.

As a temporary workaround you could use unique class names for local classes.
--
Dmitry.

[Dmitry Timoshkov]

"Craig Chandler"  wrote:
> positive on the code working under all forms of windows (95, 98, me, nt,
> 2k), has been since 1997

Please try whether the attached patch fixes your problem.
--
Dmitry.

[Dmitry Timoshkov]

Hello all.

According to MSDN all classes in Win32 are local.

My experiments under Win2000 show that user32 always turns off
CS_GLOBALCLASS (actually even "system" classes doesn't have it set)
and does fix hInstance to the module handle.

The attached patch tries to do the same in Wine.

Comments, suggestions?
--
Dmitry.

[Craig Chandler]

> Hello all.
>
> According to MSDN all classes in Win32 are local.
>
> My experiments under Win2000 show that user32 always turns off
> CS_GLOBALCLASS (actually even "system" classes doesn't have it set)
> and does fix hInstance to the module handle.
>
> The attached patch tries to do the same in Wine.
> Comments, suggestions?
>
> Dmitry.

ok, played around with both patches, both refuse to start the application
with errors in invalid class names. Changed my own source to rename the
"button" class to my own custom name ("ifbutton") and it starts fine. (so
the original class.c works). Had a whole lot of other errors but i'll get to
them later. I'm reading up on how to debug wine at the moment (i'm a new
user) so hopefully i'll get some more usefull info to you later.