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<body class='hmmessage'>Hi, <BR>
<BR>
Summary: SetClassLongW(hEdit, GCL_<FONT face="">WNDPROC</FONT>,(DWORD)NewEditWndProc) in Wine differs from Windows.<BR>
<BR>
Background: when a standard built-in window class (such as Edit for example) is registered initially, <BR>
the window system register the class with two Procedures (procA and ProcW) and assign a handle as <BR>
WNDPROC to the class. If a Edit window is created using CreateWindowExA, it will be an Ansi Window. <BR>
If a Edit window is created using CreateWindowExW, it will be an Unicode Window. This fine in Wine.<BR>
<BR>
Problem: I globally subclass the Edit class using SetClassLongW using following code<BR>
------------------------------------------------------------------------------------------------------------<BR>
HWND hEdit = CreateWindowExA(0,"Edit", "E1",WS_POPUP,0, 0, 1,1,NULL,NULL,NULL,NULL);<BR> OldEditWndProc =(WNDPROC)SetClassLongW(hEdit, GCL_<FONT face="">WNDPROC</FONT>,(DWORD)NewEditWndProc);<BR>
------------------------------------------------------------------------------------------------------------<BR>
After this subclass, Wine behaves different from Windows<BR>
<BR>
In Windows: a new Edit windows created by CreateWindowsExA((0,"Edit",...) is a Still an Ansi Windows<BR>
a new Edit windows created by CreateWindowsExW((0,"Edit",...) is a Unicode Windows<BR>
<BR>
But in Wine, new Edit windows created by CreateWindowsExA or CreateWindowsExW are all Unicode Windows.<BR>
I checked wine 1.1 source code , basically the call to<BR>
SetClassLongW(hEdit, GCL_<FONT face="">WNDPROC</FONT>,(DWORD)NewEditWndProc) has set the Edit class proc to Unicode Only.<BR>
So regardless how you create the Edit window, it will be Unicode window.<BR>
<BR>
This is understandable but it's different form windows. causing my application to mis-behave.<BR>
<BR>
More problem, the OldEditWndProc returned above is only the procW of Edit class, if we try to<BR>
undo the subclass with<BR>
SetClassLongW(hEdit, GCL_WNDPROC,(DWORD)OldEditWndProc );<BR>
the Edit class also lost it's procA.<BR>
<BR>
Discussion: How wine could do the same as windows?<BR>
<BR>
SetClassLongW(hEdit, GCL_<FONT face="">WNDPROC</FONT>,(DWORD)NewEditWndProc) should<BR>
<BR>
1. return the proc handle of the class, instead of procW.<BR>
<BR>
2. set both ProcA and ProcW of Edit class to NewEditWndProc.<BR>
so NewEditWndProc need to handle both messages from Ansi and Unicode Edit control.<BR>
<BR>
I don't know what is the best way to fix this. Please help.<BR>
<BR>
I have posted a Test application on Bugzilla #14350, please try.<BR>
<BR>
Regards<BR>
Hongbo<BR>
<BR>
<BR>
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