Release 0.3.0

Fri Sep  3 11:52:18 1993  Bob Amstadt

	* [windows/timer.c]
	Changed to use CallWindowProc() rather directly calling callback.

	* [windows/event.c]
	Implemented SetCapture() and ReleaseCapture()

	* [windows/keyboard.c]
	Created stub for GetKeyState()

	* [objects/linedda.c]
	Created stub for LineDDA()

	* [if1632/callback.c]
	Created callback handler for LineDDA callback procedure.

	* [if1632/callback.c]
	Created FreeProcInstance()

Fri Sep  3 08:36:52 1993  David Metcalfe

	* [loader/signal.c]
	Patch to and code for INT 1A

Thu Sep  2 00:31:54 1993  Alexandre Julliard

	* [objects/font.c] [objects/text.c]
	More text support: implemented justification and underlining.

	* [windows/clipping.c] [objects/clipping.c]
	Moved low-level clipping functions to objects/clipping.c.

	* [windows/clipping.c] [windows/event.c] [windows/message.c]
	Implemented window update regions.

	* [windows/dc.c] [objects/dcvalues.c]
	Moved some device-independent DC functions to objects/dcvalues.c.

	* [windows/graphics.c]
	Implemented InvertRect() and GetPixel().

Sat Aug 28 08:40:23 1993  Eric Youngdale

	* [include/neexe.h] [loader/wine.c]
	Added code to handle relocation type 4.

	* [loader/signal.h] [loader/wine.c] [loader/selector.c]
	Added support for dos interrupts.

Thu 26 Aug 19:15:00 1993  Eric Youngdale

	* [loader/selector.c]
	Fixed bug dealing with loading DLLs.

Thu Aug 26 19:22:40 1993  Alexandre Julliard

        * [include/gdi.h] [objects/font.c] [windows/dc.c]
        Beginning of real font support.

        * [windows/graphics.c]
        Implemented PatBlt().

        * [memory/global.c]
        Corrected a bug with linked list handling in GlobalAlloc().

        * [objects/bitmap.c]
        Corrected a bug in BITMAP_SelectObject().

Tue Aug 24 19:22:40 1993  David Metcalfe

        * [controls/Command*] [controls/Label*] [controls[MenuButto*]
	  [controls/SmeMenuButt*]
	Change code to support & as a special character in menu item text.

Tue Aug 24 19:22:40 1993  Alexandre Julliard

	* [include/gdi.h] [windows/dc.c]
	Heavily modified the DC structure for better device-independence.

	* [objects/bitmap.c]
	Implemented bitmap dimensions.

	* [windows/dc.c] [windows/dce.c]
	Implemented DC state saving and restoring.

	* [windows/dc.c]
	Implemented ROP mode.

	* [windows/graphics.c]
	Implemented FillRect().

Mon Aug 23 22:08:34 1993  Bob Amstadt  (bob at pooh)

	* [misc/xt.c]
	Fixed bug in InvalidateRect().  Solitaire attempted to
	clear window before it was realized.

	* [loader/resource.c]
	Began rewrite of LoadBitmap().

	* [loader/wine.c]
	Fixed code which set Argv and Argc global variables.

	* [loader/selector.c]
	Added code to set up command line arguments.

	* [include/neexe.h]
	Fixed error in PSP structure.

Tue Aug 17 20:41:12 1993  Alexandre Julliard

	* [include/gdi.h] [windows/dc.c]
	Implemented device capabilities.

	* [objects/region.c]
	Implemented EqualRgn() and CombineRgn().

	* [windows/clipping.c]
	Implemented Save/RestoreVisRgn().

	* [windows/graphics.c]
	Implemented PaintRgn() and FillRgn().

	* [windows/mapping.c]
	Implemented mapping modes.

Tue Aug 10 14:07:38 1993  Alexandre Julliard

	* [if1632/user.spec] [misc/rect.c]
	Implemented rectangle API functions.

	* [if1632/gdi.spec] [include/gdi.h] [objects/region.c]
	Implemented regions.

	* [windows/class.c]
	Corrected a typo in UnregisterClass().

	* [windows/clipping.c] [windows/dc.c]
	Implemented DC clipping and visible region.

Tue Aug 10 20:57:56 1993  Bob Amstadt  (bob at pooh)

	* [controls/menu.c] [windows/win.c]
	SetMenu(), GetMenu(), CheckMenuItem() implemented

Thu Aug  5 22:33:22 1993  Bob Amstadt  (bob at pooh)

	* [controls/menu.c] [windows/win.c]
	Many improvements menus.  LoadMenu() should work.

Wed Aug  4 14:55:36 1993  Alexandre Julliard

        * [objects/dib.c]
        Started the implementation of device-independent bitmaps.

        * [objects/bitmap.c]
        Added support for multiple bitmap depths.

        * [objects/brush.c]
        Implemented pattern brushes.

        * [windows/dc.c] [windows/graphics.c]
        Implemented some GDI graphics primitives.

Tue Aug  3 21:16:47 1993  Bob Amstadt  (bob at pooh)

	* [controls/menu.c] [windows/win.c] [include/menu.h]
	Code to load class menus from executable file.

	* [if1632/user.spec]
	Fixed specification of SendMessage() and PostMessage.

Mon Jul 26 21:53:24 1993  Alexandre Julliard

	* [if1632/call.S]
	Corrected a bug in KERNEL_InitTask().

	* [include/windows.h]
	Added a lot of constants.

	* [loader/selector.c]
	Corrected a bug in segment allocation in CreateSelectors().

	* [objects/bitmap.c]
	Implemented SelectObject() for bitmaps.

	* [objects/brush.c]
	Implemented hatched brushes and SelectObject().

	* [objects/gdiobj.c]
	Removed linked list (not needed).

	* [objects/palette.c]
	Implemented system palette creation and misc. palette API functions.

	* [windows/timer.c]
	Implemented timers.

	* [windows/dc.c]
	Implemented memory device contexts.

Tue Jul 20 10:38:59 1993  Bob Amstadt  (bob at pooh)

        * [dos.c]
	Split DOS3Call() out of kernel.c.  Added support for get date
	and time functions.

	* [call.S]
	Added function ReturnFromRegisterFunc() to allow DOS calls
	to return values in registers.

	* [regfunc.h]
	Macros to access registers saved on stack.

Tue Jul 20 10:38:59 1993  Alexandre Julliard

        * [win.c]
        Corrected allocation of the WM_CREATE data structure.

        * [dce.c] [dce.h]
        Implemented DCE handling.

        * [bitmap.c] [brush.c] [dc.c] [font.c] [gdi.h] [gdi.spec] 
          [gdiobj.c] [palette.c] [pen.c]
        Implemented the GDI objects data structures and allocation.

        * [windows.h]
        Added several structures and constants for GDI objects.

Mon Jul 19 12:51:10 1993  Bob Amstadt  (bob at pooh)

	* [ldtlib.c]
	Modified system calls to match Linus' new interface for
	the LDT modification.

	* [win.c]
	Fixed bug with WM_CREATE message.

	* [heap.c] [kernel.spec]
	Completed local heap allocation functions.

	* [global.c]
	Created function GlobalQuickAlloc() for easy allocation from DLLs
diff --git a/windows/class.c b/windows/class.c
new file mode 100644
index 0000000..2cb42ec
--- /dev/null
+++ b/windows/class.c
@@ -0,0 +1,187 @@
+/*
+ * Window classes functions
+ *
+ * Copyright 1993 Alexandre Julliard
+ */
+
+static char Copyright[] = "Copyright  Alexandre Julliard, 1993";
+
+#include "class.h"
+#include "user.h"
+#include "win.h"
+
+
+static HCLASS firstClass = 0;
+
+
+/***********************************************************************
+ *           CLASS_FindClassByName
+ *
+ * Return a handle and a pointer to the class.
+ */
+HCLASS CLASS_FindClassByName( char * name, CLASS **ptr )
+{
+    HCLASS class = firstClass;
+    while(class)
+    {
+	*ptr = (CLASS *) USER_HEAP_ADDR(class);
+	if (!strcmp( (*ptr)->wc.lpszClassName, name )) return class;
+	class = (*ptr)->hNext;
+    }
+    return 0;
+}
+
+/***********************************************************************
+ *           CLASS_FindClassPtr
+ *
+ * Return a pointer to the CLASS structure corresponding to a HCLASS.
+ */
+CLASS * CLASS_FindClassPtr( HCLASS hclass )
+{
+    CLASS * ptr;
+    
+    if (!hclass) return NULL;
+    ptr = (CLASS *) USER_HEAP_ADDR( hclass );
+    if (ptr->wMagic != CLASS_MAGIC) return NULL;
+    return ptr;
+}
+
+
+/***********************************************************************
+ *           RegisterClass    (USER.57)
+ */
+ATOM RegisterClass( LPWNDCLASS class )
+{
+    CLASS * newClass;
+    HCLASS handle;
+    
+#ifdef DEBUG_CLASS
+    printf( "RegisterClass: wndproc=%08x hinst=%d name='%s'\n", 
+	    class->lpfnWndProc, class->hInstance, class->lpszClassName );
+#endif
+
+    handle = USER_HEAP_ALLOC( GMEM_MOVEABLE, sizeof(CLASS)+class->cbClsExtra );
+    if (!handle) return 0;
+    newClass = (CLASS *) USER_HEAP_ADDR( handle );
+    newClass->hNext      = firstClass;
+    newClass->wMagic     = CLASS_MAGIC;
+    newClass->atomName   = handle;  /* Should be an atom */
+    newClass->hDCE       = 0;  /* Should allocate a DCE if needed */
+    newClass->cWindows   = 0;  
+    newClass->wc         = *class;
+        
+      /* Class name should also be set to zero. For now we need the
+       * name because we don't have atoms.
+       */
+    newClass->wc.lpszClassName = (char *)malloc(strlen(class->lpszClassName)+1);
+    strcpy( newClass->wc.lpszClassName, class->lpszClassName );
+    
+    if (class->cbClsExtra) memset( newClass->wExtra, 0, class->cbClsExtra );
+    
+    firstClass = handle;
+    return handle;  /* Should be an atom */
+}
+
+
+/***********************************************************************
+ *           UnregisterClass    (USER.403)
+ */
+BOOL UnregisterClass( LPSTR className, HANDLE instance )
+{
+    HANDLE class, next, prevClass;
+    CLASS * classPtr, * prevClassPtr;
+    
+      /* Check if we can remove this class */
+    class = CLASS_FindClassByName( className, &classPtr );
+    if (!class) return FALSE;
+    if ((classPtr->wc.hInstance != instance) || (classPtr->cWindows > 0))
+	return FALSE;
+    
+      /* Remove the class from the linked list */
+    if (firstClass == class) firstClass = classPtr->hNext;
+    else
+    {
+	for (prevClass = firstClass; prevClass; prevClass=prevClassPtr->hNext)
+	{
+	    prevClassPtr = (CLASS *) USER_HEAP_ADDR(prevClass);
+	    if (prevClassPtr->hNext == class) break;
+	}
+	if (!prevClass)
+	{
+	    printf( "ERROR: Class list corrupted\n" );
+	    return FALSE;
+	}
+	prevClassPtr->hNext = classPtr->hNext;
+    }
+    
+    USER_HEAP_FREE( class );
+    return TRUE;
+}
+
+
+/***********************************************************************
+ *           GetClassWord    (USER.129)
+ */
+WORD GetClassWord( HWND hwnd, short offset )
+{
+    return (WORD)GetClassLong( hwnd, offset );
+}
+
+
+/***********************************************************************
+ *           SetClassWord    (USER.130)
+ */
+WORD SetClassWord( HWND hwnd, short offset, WORD newval )
+{
+    CLASS * classPtr;
+    WND * wndPtr;
+    WORD retval = 0;
+    
+    if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return 0;
+    if ((classPtr = CLASS_FindClassPtr( wndPtr->hClass )))
+    {
+	WORD * ptr = (WORD *)(((char *)classPtr->wExtra) + offset);
+	retval = *ptr;
+	*ptr = newval;
+    }
+    GlobalUnlock( hwnd );
+    return retval;
+}
+
+
+/***********************************************************************
+ *           GetClassLong    (USER.131)
+ */
+LONG GetClassLong( HWND hwnd, short offset )
+{
+    CLASS * classPtr;
+    WND * wndPtr;
+    LONG retval = 0;
+    
+    if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return 0;
+    if ((classPtr = CLASS_FindClassPtr( wndPtr->hClass )))
+	retval = *(LONG *)(((char *)classPtr->wExtra) + offset);
+    GlobalUnlock( hwnd );
+    return retval;
+}
+
+
+/***********************************************************************
+ *           SetClassLong    (USER.132)
+ */
+LONG SetClassLong( HWND hwnd, short offset, LONG newval )
+{
+    CLASS * classPtr;
+    WND * wndPtr;
+    LONG retval = 0;
+    
+    if (!(wndPtr = WIN_FindWndPtr( hwnd ))) return 0;
+    if ((classPtr = CLASS_FindClassPtr( wndPtr->hClass )))
+    {
+	LONG * ptr = (LONG *)(((char *)classPtr->wExtra) + offset);
+	retval = *ptr;
+	*ptr = newval;
+    }
+    GlobalUnlock( hwnd );
+    return retval;
+}