Initial revision

1 files changed, 1131 insertions, 0 deletions

diff --git a/hw/xwin/winwndproc.c b/hw/xwin/winwndproc.c
new file mode 100644
index 000000000..6aa29316d
--- /dev/null
+++ b/hw/xwin/winwndproc.c
@@ -0,0 +1,1131 @@
+/*
+ *Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved.
+ *
+ *Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ *"Software"), to deal in the Software without restriction, including
+ *without limitation the rights to use, copy, modify, merge, publish,
+ *distribute, sublicense, and/or sell copies of the Software, and to
+ *permit persons to whom the Software is furnished to do so, subject to
+ *the following conditions:
+ *
+ *The above copyright notice and this permission notice shall be
+ *included in all copies or substantial portions of the Software.
+ *
+ *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *NONINFRINGEMENT. IN NO EVENT SHALL THE XFREE86 PROJECT BE LIABLE FOR
+ *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ *Except as contained in this notice, the name of the XFree86 Project
+ *shall not be used in advertising or otherwise to promote the sale, use
+ *or other dealings in this Software without prior written authorization
+ *from the XFree86 Project.
+ *
+ * Authors:	Dakshinamurthy Karra
+ *		Suhaib M Siddiqi
+ *		Peter Busch
+ *		Harold L Hunt II
+ *		MATSUZAKI Kensuke
+ */
+/* $XFree86: xc/programs/Xserver/hw/xwin/winwndproc.c,v 1.24 2003/02/12 15:01:38 alanh Exp $ */
+
+#include "win.h"
+#include <commctrl.h>
+
+BOOL CALLBACK
+winChangeDepthDlgProc (HWND hDialog, UINT message,
+		       WPARAM wParam, LPARAM lParam);
+
+
+/*
+ * Called by winWakeupHandler
+ * Processes current Windows message
+ */
+
+LRESULT CALLBACK
+winWindowProc (HWND hwnd, UINT message, 
+	       WPARAM wParam, LPARAM lParam)
+{
+  static winPrivScreenPtr	s_pScreenPriv = NULL;
+  static winScreenInfo		*s_pScreenInfo = NULL;
+  static ScreenPtr		s_pScreen = NULL;
+  static HWND			s_hwndLastPrivates = NULL;
+  static HINSTANCE		s_hInstance;
+  static Bool			s_fCursor = TRUE;
+  static Bool			s_fTracking = FALSE;
+  static unsigned long		s_ulServerGeneration = 0;
+  int				iScanCode;
+  int				i;
+
+  /* Watch for server regeneration */
+  if (g_ulServerGeneration != s_ulServerGeneration)
+    {
+      /* Store new server generation */
+      s_ulServerGeneration = g_ulServerGeneration;
+    }
+
+  /* Only retrieve new privates pointers if window handle is null or changed */
+  if ((s_pScreenPriv == NULL || hwnd != s_hwndLastPrivates)
+      && (s_pScreenPriv = GetProp (hwnd, WIN_SCR_PROP)) != NULL)
+    {
+#if CYGDEBUG
+      ErrorF ("winWindowProc - Setting privates handle\n");
+#endif
+      s_pScreenInfo = s_pScreenPriv->pScreenInfo;
+      s_pScreen = s_pScreenInfo->pScreen;
+      s_hwndLastPrivates = hwnd;
+    }
+  else if (s_pScreenPriv == NULL)
+    {
+      /* For safety, handle case that should never happen */
+      s_pScreenInfo = NULL;
+      s_pScreen = NULL;
+      s_hwndLastPrivates = NULL;
+    }
+
+  /* Branch on message type */
+  switch (message)
+    {
+    case WM_CREATE:
+#if CYGDEBUG
+      ErrorF ("winWindowProc - WM_CREATE\n");
+#endif
+      
+      /*
+       * Add a property to our display window that references
+       * this screens' privates.
+       *
+       * This allows the window procedure to refer to the
+       * appropriate window DC and shadow DC for the window that
+       * it is processing.  We use this to repaint exposed
+       * areas of our display window.
+       */
+      s_pScreenPriv = ((LPCREATESTRUCT) lParam)->lpCreateParams;
+      s_hInstance = ((LPCREATESTRUCT) lParam)->hInstance;
+      s_pScreenInfo = s_pScreenPriv->pScreenInfo;
+      s_pScreen = s_pScreenInfo->pScreen;
+      s_hwndLastPrivates = hwnd;
+      SetProp (hwnd, WIN_SCR_PROP, s_pScreenPriv);
+
+      /* Store the mode key states so restore doesn't try to restore them */
+      winStoreModeKeyStates (s_pScreen);
+      return 0;
+
+    case WM_DISPLAYCHANGE:
+      /* We cannot handle a display mode change during initialization */
+      if (s_pScreenInfo == NULL)
+	FatalError ("winWindowProc - WM_DISPLAYCHANGE - The display "
+		    "mode changed while we were intializing.  This is "
+		    "very bad and unexpected.  Exiting.\n");
+
+      /*
+       * We do not care about display changes with
+       * fullscreen DirectDraw engines, because those engines set
+       * their own mode when they become active.
+       */
+      if (s_pScreenInfo->fFullScreen
+	  && (s_pScreenInfo->dwEngine == WIN_SERVER_SHADOW_DD
+	      || s_pScreenInfo->dwEngine == WIN_SERVER_SHADOW_DDNL
+	      || s_pScreenInfo->dwEngine == WIN_SERVER_PRIMARY_DD))
+	{
+	  /* 
+	   * Store the new display dimensions and depth.
+	   * We do this here for future compatibility in case we
+	   * ever allow switching from fullscreen to windowed mode.
+	   */
+	  s_pScreenPriv->dwLastWindowsWidth = GetSystemMetrics (SM_CXSCREEN);
+	  s_pScreenPriv->dwLastWindowsHeight = GetSystemMetrics (SM_CYSCREEN);
+	  s_pScreenPriv->dwLastWindowsBitsPixel
+	    = GetDeviceCaps (s_pScreenPriv->hdcScreen, BITSPIXEL);	  
+	  break;
+	}
+      
+      ErrorF ("winWindowProc - WM_DISPLAYCHANGE - orig bpp: %d, last bpp: %d, "
+	      "new bpp: %d\n",
+	      s_pScreenInfo->dwBPP,
+	      s_pScreenPriv->dwLastWindowsBitsPixel,
+	      wParam);
+
+      ErrorF ("winWindowProc - WM_DISPLAYCHANGE - new width: %d "
+	      "new height: %d\n",
+	      LOWORD (lParam), HIWORD (lParam));
+
+      /*
+       * TrueColor --> TrueColor depth changes are disruptive for:
+       *	Windowed:
+       *		Shadow DirectDraw
+       *		Shadow DirectDraw Non-Locking
+       *		Primary DirectDraw
+       *
+       * TrueColor --> TrueColor depth changs are non-optimal for:
+       *	Windowed:
+       *		Shadow GDI
+       *
+       *	FullScreen:
+       *		Shadow GDI
+       *
+       * TrueColor --> PseudoColor or vice versa are disruptive for:
+       *	Windowed:
+       *		Shadow DirectDraw
+       *		Shadow DirectDraw Non-Locking
+       *		Primary DirectDraw
+       *		Shadow GDI
+       */
+
+      /*
+       * Check for a disruptive change in depth.
+       * We can only display a message for a disruptive depth change,
+       * we cannot do anything to correct the situation.
+       */
+      if ((s_pScreenInfo->dwBPP != wParam)
+	  && (s_pScreenInfo->dwEngine == WIN_SERVER_SHADOW_DD
+	      || s_pScreenInfo->dwEngine == WIN_SERVER_SHADOW_DDNL
+	      || s_pScreenInfo->dwEngine == WIN_SERVER_PRIMARY_DD))
+	{
+	  /* Cannot display the visual until the depth is restored */
+	  ErrorF ("winWindowProc - Disruptive change in depth\n");
+
+	  /* Check if the dialog box already exists */
+	  if (g_hDlgDepthChange != NULL)
+	    {
+	      ErrorF ("winWindowProc - Dialog box already exists\n");
+
+	      /* Dialog box already exists, just display it */
+	      ShowWindow (g_hDlgDepthChange, SW_SHOWDEFAULT);
+	    }
+	  else
+	    {
+	      /*
+	       * Display a notification to the user that the visual 
+	       * will not be displayed until the Windows display depth 
+	       * is restored to the original value.
+	       */
+	      g_hDlgDepthChange = CreateDialogParam (s_hInstance,
+						     "DEPTH_CHANGE_BOX",
+						     hwnd,
+						     winChangeDepthDlgProc,
+						     (int) s_pScreenPriv);
+	      
+	      /* Show the dialog box */
+	      ShowWindow (g_hDlgDepthChange, SW_SHOW);
+	      
+	      ErrorF ("winWindowProc - DialogBox returned: %d\n",
+		      g_hDlgDepthChange);
+	      ErrorF ("winWindowProc - GetLastError: %d\n", GetLastError ());
+	      
+	      /* Minimize the display window */
+	      ShowWindow (hwnd, SW_MINIMIZE);
+	      
+	      /* Flag that we have an invalid screen depth */
+	      s_pScreenPriv->fBadDepth = TRUE;
+	      
+	      /*
+	       * TODO: Redisplay the dialog box if it is not
+	       * currently displayed.
+	       */
+	    }
+	}
+      else
+	{
+	  /* Flag that we have a valid screen depth */
+	  s_pScreenPriv->fBadDepth = FALSE;
+	}
+      
+      /*
+       * Check for a change in display dimensions.
+       * We can simply recreate the same-sized primary surface when
+       * the display dimensions change.
+       */
+      if (s_pScreenPriv->dwLastWindowsWidth != LOWORD (lParam)
+	  || s_pScreenPriv->dwLastWindowsHeight != HIWORD (lParam))
+	{
+	  /*
+	   * NOTE: The non-DirectDraw engines set the ReleasePrimarySurface
+	   * and CreatePrimarySurface function pointers to point
+	   * to the no operation function, NoopDDA.  This allows us
+	   * to blindly call these functions, even if they are not
+	   * relevant to the current engine (e.g., Shadow GDI).
+	   */
+
+#if CYGDEBUG
+	  ErrorF ("winWindowProc - WM_DISPLAYCHANGE - Dimensions changed\n");
+#endif
+	  
+	  /* Release the old primary surface */
+	  (*s_pScreenPriv->pwinReleasePrimarySurface) (s_pScreen);
+
+#if CYGDEBUG
+	  ErrorF ("winWindowProc - WM_DISPLAYCHANGE - Released "
+		  "primary surface\n");
+#endif
+
+	  /* Create the new primary surface */
+	  (*s_pScreenPriv->pwinCreatePrimarySurface) (s_pScreen);
+
+#if CYGDEBUG
+	  ErrorF ("winWindowProc - WM_DISPLAYCHANGE - Recreated "
+		  "primary surface\n");
+#endif
+	}
+      else
+	{
+#if CYGDEBUG
+	  ErrorF ("winWindowProc - WM_DISPLAYCHANGE - Dimensions did not "
+		  "change\n");
+#endif
+	}
+
+      /* Store the new display dimensions and depth */
+      s_pScreenPriv->dwLastWindowsWidth = GetSystemMetrics (SM_CXSCREEN);
+      s_pScreenPriv->dwLastWindowsHeight = GetSystemMetrics (SM_CYSCREEN);
+      s_pScreenPriv->dwLastWindowsBitsPixel
+	= GetDeviceCaps (s_pScreenPriv->hdcScreen, BITSPIXEL);
+      break;
+
+    case WM_SIZE:
+      {
+	SCROLLINFO		si;
+	RECT			rcWindow;
+	int			iWidth, iHeight;
+
+#if CYGDEBUG
+	ErrorF ("winWindowProc - WM_SIZE\n");
+#endif
+
+	/* Break if we do not use scrollbars */
+	if (!s_pScreenInfo->fScrollbars
+	    || !s_pScreenInfo->fDecoration
+	    || s_pScreenInfo->fRootless
+	    || s_pScreenInfo->fMultiWindow
+	    || s_pScreenInfo->fFullScreen)
+	  break;
+
+	/* No need to resize if we get minimized */
+	if (wParam == SIZE_MINIMIZED)
+	  return 0;
+
+	/*
+	 * Get the size of the whole window, including client area,
+	 * scrollbars, and non-client area decorations (caption, borders).
+	 * We do this because we need to check if the client area
+	 * without scrollbars is large enough to display the whole visual.
+	 * The new client area size passed by lParam already subtracts
+	 * the size of the scrollbars if they are currently displayed.
+	 * So checking is LOWORD(lParam) == visual_width and
+	 * HIWORD(lParam) == visual_height will never tell us to hide
+	 * the scrollbars because the client area would always be too small.
+	 * GetClientRect returns the same sizes given by lParam, so we
+	 * cannot use GetClientRect either.
+	 */
+	GetWindowRect (hwnd, &rcWindow);
+	iWidth = rcWindow.right - rcWindow.left;
+	iHeight = rcWindow.bottom - rcWindow.top;
+
+	ErrorF ("winWindowProc - WM_SIZE - window w: %d h: %d, "
+		"new client area w: %d h: %d\n",
+		iWidth, iHeight, LOWORD (lParam), HIWORD (lParam));
+
+	/* Subtract the frame size from the window size. */
+	iWidth -= 2 * GetSystemMetrics (SM_CXSIZEFRAME);
+	iHeight -= (2 * GetSystemMetrics (SM_CYSIZEFRAME)
+		    + GetSystemMetrics (SM_CYCAPTION));
+
+	/*
+	 * Update scrollbar page sizes.
+	 * NOTE: If page size == range, then the scrollbar is
+	 * automatically hidden.
+	 */
+
+	/* Is the naked client area large enough to show the whole visual? */
+	if (iWidth < s_pScreenInfo->dwWidth
+	    || iHeight < s_pScreenInfo->dwHeight)
+	  {
+	    /* Client area too small to display visual, use scrollbars */
+	    iWidth -= GetSystemMetrics (SM_CXVSCROLL);
+	    iHeight -= GetSystemMetrics (SM_CYHSCROLL);
+	  }
+	
+	/* Set the horizontal scrollbar page size */
+	si.cbSize = sizeof (si);
+	si.fMask = SIF_PAGE | SIF_RANGE;
+	si.nMin = 0;
+	si.nMax = s_pScreenInfo->dwWidth - 1;
+	si.nPage = iWidth;
+	SetScrollInfo (hwnd, SB_HORZ, &si, TRUE);
+	
+	/* Set the vertical scrollbar page size */
+	si.cbSize = sizeof (si);
+	si.fMask = SIF_PAGE | SIF_RANGE;
+	si.nMin = 0;
+	si.nMax = s_pScreenInfo->dwHeight - 1;
+	si.nPage = iHeight;
+	SetScrollInfo (hwnd, SB_VERT, &si, TRUE);
+
+	/*
+	 * NOTE: Scrollbars may have moved if they were at the 
+	 * far right/bottom, so we query their current position.
+	 */
+	
+	/* Get the horizontal scrollbar position and set the offset */
+	si.cbSize = sizeof (si);
+	si.fMask = SIF_POS;
+	GetScrollInfo (hwnd, SB_HORZ, &si);
+	s_pScreenInfo->dwXOffset = -si.nPos;
+	
+	/* Get the vertical scrollbar position and set the offset */
+	si.cbSize = sizeof (si);
+	si.fMask = SIF_POS;
+	GetScrollInfo (hwnd, SB_VERT, &si);
+	s_pScreenInfo->dwYOffset = -si.nPos;
+      }
+      return 0;
+
+    case WM_VSCROLL:
+      {
+	SCROLLINFO		si;
+	int			iVertPos;
+
+#if CYGDEBUG
+	ErrorF ("winWindowProc - WM_VSCROLL\n");
+#endif
+      
+	/* Get vertical scroll bar info */
+	si.cbSize = sizeof (si);
+	si.fMask = SIF_ALL;
+	GetScrollInfo (hwnd, SB_VERT, &si);
+
+	/* Save the vertical position for comparison later */
+	iVertPos = si.nPos;
+
+	/*
+	 * Don't forget:
+	 * moving the scrollbar to the DOWN, scroll the content UP
+	 */
+	switch (LOWORD(wParam))
+	  {
+	  case SB_TOP:
+	    si.nPos = si.nMin;
+	    break;
+	  
+	  case SB_BOTTOM:
+	    si.nPos = si.nMax - si.nPage + 1;
+	    break;
+
+	  case SB_LINEUP:
+	    si.nPos -= 1;
+	    break;
+	  
+	  case SB_LINEDOWN:
+	    si.nPos += 1;
+	    break;
+	  
+	  case SB_PAGEUP:
+	    si.nPos -= si.nPage;
+	    break;
+	  
+	  case SB_PAGEDOWN:
+	    si.nPos += si.nPage;
+	    break;
+
+	  case SB_THUMBTRACK:
+	    si.nPos = si.nTrackPos;
+	    break;
+
+	  default:
+	    break;
+	  }
+
+	/*
+	 * We retrieve the position after setting it,
+	 * because Windows may adjust it.
+	 */
+	si.fMask = SIF_POS;
+	SetScrollInfo (hwnd, SB_VERT, &si, TRUE);
+	GetScrollInfo (hwnd, SB_VERT, &si);
+      
+	/* Scroll the window if the position has changed */
+	if (si.nPos != iVertPos)
+	  {
+	    /* Save the new offset for bit block transfers, etc. */
+	    s_pScreenInfo->dwYOffset = -si.nPos;
+
+	    /* Change displayed region in the window */
+	    ScrollWindowEx (hwnd,
+			    0,
+			    iVertPos - si.nPos,
+			    NULL,
+			    NULL,
+			    NULL,
+			    NULL,
+			    SW_INVALIDATE);
+	  
+	    /* Redraw the window contents */
+	    UpdateWindow (hwnd);
+	  }
+      }
+      return 0;
+
+    case WM_HSCROLL:
+      {
+	SCROLLINFO		si;
+	int			iHorzPos;
+
+#if CYGDEBUG
+	ErrorF ("winWindowProc - WM_HSCROLL\n");
+#endif
+      
+	/* Get horizontal scroll bar info */
+	si.cbSize = sizeof (si);
+	si.fMask = SIF_ALL;
+	GetScrollInfo (hwnd, SB_HORZ, &si);
+
+	/* Save the horizontal position for comparison later */
+	iHorzPos = si.nPos;
+
+	/*
+	 * Don't forget:
+	 * moving the scrollbar to the RIGHT, scroll the content LEFT
+	 */
+	switch (LOWORD(wParam))
+	  {
+	  case SB_LEFT:
+	    si.nPos = si.nMin;
+	    break;
+	  
+	  case SB_RIGHT:
+	    si.nPos = si.nMax - si.nPage + 1;
+	    break;
+
+	  case SB_LINELEFT:
+	    si.nPos -= 1;
+	    break;
+	  
+	  case SB_LINERIGHT:
+	    si.nPos += 1;
+	    break;
+	  
+	  case SB_PAGELEFT:
+	    si.nPos -= si.nPage;
+	    break;
+	  
+	  case SB_PAGERIGHT:
+	    si.nPos += si.nPage;
+	    break;
+
+	  case SB_THUMBTRACK:
+	    si.nPos = si.nTrackPos;
+	    break;
+
+	  default:
+	    break;
+	  }
+
+	/*
+	 * We retrieve the position after setting it,
+	 * because Windows may adjust it.
+	 */
+	si.fMask = SIF_POS;
+	SetScrollInfo (hwnd, SB_HORZ, &si, TRUE);
+	GetScrollInfo (hwnd, SB_HORZ, &si);
+      
+	/* Scroll the window if the position has changed */
+	if (si.nPos != iHorzPos)
+	  {
+	    /* Save the new offset for bit block transfers, etc. */
+	    s_pScreenInfo->dwXOffset = -si.nPos;
+
+	    /* Change displayed region in the window */
+	    ScrollWindowEx (hwnd,
+			    iHorzPos - si.nPos,
+			    0,
+			    NULL,
+			    NULL,
+			    NULL,
+			    NULL,
+			    SW_INVALIDATE);
+	  
+	    /* Redraw the window contents */
+	    UpdateWindow (hwnd);
+	  }
+      }
+      return 0;
+
+    case WM_GETMINMAXINFO:
+      {
+	MINMAXINFO		*pMinMaxInfo = (MINMAXINFO *) lParam;
+	int			iCaptionHeight;
+	int			iBorderHeight, iBorderWidth;
+
+#if CYGDEBUG	
+	ErrorF ("winWindowProc - WM_GETMINMAXINFO - pScreenInfo: %08x\n",
+		s_pScreenInfo);
+#endif
+
+	/* Can't do anything without screen info */
+	if (s_pScreenInfo == NULL
+	    || !s_pScreenInfo->fScrollbars
+	    || s_pScreenInfo->fFullScreen
+	    || !s_pScreenInfo->fDecoration
+	    || s_pScreenInfo->fRootless
+	    || s_pScreenInfo->fMultiWindow)
+	  break;
+
+	/*
+	 * Here we can override the maximum tracking size, which
+	 * is the largest size that can be assigned to our window
+	 * via the sizing border.
+	 */
+
+	/*
+	 * FIXME: Do we only need to do this once, since our visual size
+	 * does not change?  Does Windows store this value statically
+	 * once we have set it once?
+	 */
+
+	/* Get the border and caption sizes */
+	iCaptionHeight = GetSystemMetrics (SM_CYCAPTION);
+	iBorderWidth = 2 * GetSystemMetrics (SM_CXSIZEFRAME);
+	iBorderHeight = 2 * GetSystemMetrics (SM_CYSIZEFRAME);
+	
+	/* Allow the full visual to be displayed */
+	pMinMaxInfo->ptMaxTrackSize.x
+	  = s_pScreenInfo->dwWidth + iBorderWidth;
+	pMinMaxInfo->ptMaxTrackSize.y
+	  = s_pScreenInfo->dwHeight + iBorderHeight + iCaptionHeight;
+      }
+      return 0;
+
+    case WM_ERASEBKGND:
+#if CYGDEBUG
+      ErrorF ("winWindowProc - WM_ERASEBKGND\n");
+#endif
+      /*
+       * Pretend that we did erase the background but we don't care,
+       * the application uses the full window estate. This avoids some
+       * flickering when resizing.
+       */
+      return TRUE;
+
+    case WM_PAINT:
+#if CYGDEBUG
+      ErrorF ("winWindowProc - WM_PAINT\n");
+#endif
+      /* Only paint if we have privates and the server is enabled */
+      if (s_pScreenPriv == NULL
+	  || !s_pScreenPriv->fEnabled
+	  || (s_pScreenInfo->fFullScreen && !s_pScreenPriv->fActive)
+	  || s_pScreenPriv->fBadDepth)
+	{
+	  /* We don't want to paint */
+	  break;
+	}
+
+      /* Break out here if we don't have a valid paint routine */
+      if (s_pScreenPriv->pwinBltExposedRegions == NULL)
+	break;
+      
+      /* Call the engine dependent repainter */
+      (*s_pScreenPriv->pwinBltExposedRegions) (s_pScreen);
+      return 0;
+
+    case WM_PALETTECHANGED:
+      {
+#if CYGDEBUG
+	ErrorF ("winWindowProc - WM_PALETTECHANGED\n");
+#endif
+	/*
+	 * Don't process if we don't have privates or a colormap,
+	 * or if we have an invalid depth.
+	 */
+	if (s_pScreenPriv == NULL
+	    || s_pScreenPriv->pcmapInstalled == NULL
+	    || s_pScreenPriv->fBadDepth)
+	  break;
+
+	/* Return if we caused the palette to change */
+	if ((HWND) wParam == hwnd)
+	  {
+	    /* Redraw the screen */
+	    (*s_pScreenPriv->pwinRedrawScreen) (s_pScreen);
+	    return 0;
+	  }
+	
+	/* Reinstall the windows palette */
+	(*s_pScreenPriv->pwinRealizeInstalledPalette) (s_pScreen);
+	
+	/* Redraw the screen */
+	(*s_pScreenPriv->pwinRedrawScreen) (s_pScreen);
+	return 0;
+      }
+
+    case WM_MOUSEMOVE:
+      /* We can't do anything without privates */
+      if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
+	break;
+
+      /* Has the mouse pointer crossed screens? */
+      if (s_pScreen != miPointerCurrentScreen ())
+	miPointerSetNewScreen (s_pScreenInfo->dwScreen,
+			       GET_X_LPARAM(lParam)-s_pScreenInfo->dwXOffset,
+			       GET_Y_LPARAM(lParam)-s_pScreenInfo->dwYOffset);
+
+      /* Are we tracking yet? */
+      if (!s_fTracking)
+	{
+	  TRACKMOUSEEVENT		tme;
+	  
+	  /* Setup data structure */
+	  ZeroMemory (&tme, sizeof (tme));
+	  tme.cbSize = sizeof (tme);
+	  tme.dwFlags = TME_LEAVE;
+	  tme.hwndTrack = hwnd;
+
+	  /* Call the tracking function */
+	  if (!(*g_fpTrackMouseEvent) (&tme))
+	    ErrorF ("winWindowProc - _TrackMouseEvent failed\n");
+
+	  /* Flag that we are tracking now */
+	  s_fTracking = TRUE;
+	}
+
+      /* Hide or show the Windows mouse cursor */
+      if (s_fCursor && (s_pScreenPriv->fActive || s_pScreenInfo->fLessPointer))
+	{
+	  /* Hide Windows cursor */
+	  s_fCursor = FALSE;
+	  ShowCursor (FALSE);
+	}
+      else if (!s_fCursor && !s_pScreenPriv->fActive
+	       && !s_pScreenInfo->fLessPointer)
+	{
+	  /* Show Windows cursor */
+	  s_fCursor = TRUE;
+	  ShowCursor (TRUE);
+	}
+      
+      /* Deliver absolute cursor position to X Server */
+      miPointerAbsoluteCursor (GET_X_LPARAM(lParam)-s_pScreenInfo->dwXOffset,
+			       GET_Y_LPARAM(lParam)-s_pScreenInfo->dwYOffset,
+			       g_c32LastInputEventTime = GetTickCount ());
+      return 0;
+
+    case WM_NCMOUSEMOVE:
+      /*
+       * We break instead of returning 0 since we need to call
+       * DefWindowProc to get the mouse cursor changes
+       * and min/max/close button highlighting in Windows XP.
+       * The Platform SDK says that you should return 0 if you
+       * process this message, but it fails to mention that you
+       * will give up any default functionality if you do return 0.
+       */
+      
+      /* We can't do anything without privates */
+      if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
+	break;
+      
+      /* Non-client mouse movement, show Windows cursor */
+      if (!s_fCursor)
+	{
+	  s_fCursor = TRUE;
+	  ShowCursor (TRUE);
+	}
+      break;
+
+    case WM_MOUSELEAVE:
+      /* Mouse has left our client area */
+
+      /* Flag that we are no longer tracking */
+      s_fTracking = FALSE;
+
+      /* Show the mouse cursor, if necessary */
+      if (!s_fCursor)
+	{
+	  s_fCursor = TRUE;
+	  ShowCursor (TRUE);
+	}
+      return 0;
+
+    case WM_LBUTTONDBLCLK:
+    case WM_LBUTTONDOWN:
+      if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
+	break;
+      if (s_pScreenInfo->fRootless) SetCapture (hwnd);
+      return winMouseButtonsHandle (s_pScreen, ButtonPress, Button1, wParam);
+      
+    case WM_LBUTTONUP:
+      if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
+	break;
+      if (s_pScreenInfo->fRootless) ReleaseCapture ();
+      return winMouseButtonsHandle (s_pScreen, ButtonRelease, Button1, wParam);
+
+    case WM_MBUTTONDBLCLK:
+    case WM_MBUTTONDOWN:
+      if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
+	break;
+      if (s_pScreenInfo->fRootless) SetCapture (hwnd);
+      return winMouseButtonsHandle (s_pScreen, ButtonPress, Button2, wParam);
+      
+    case WM_MBUTTONUP:
+      if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
+	break;
+      if (s_pScreenInfo->fRootless) ReleaseCapture ();
+      return winMouseButtonsHandle (s_pScreen, ButtonRelease, Button2, wParam);
+      
+    case WM_RBUTTONDBLCLK:
+    case WM_RBUTTONDOWN:
+      if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
+	break;
+      if (s_pScreenInfo->fRootless) SetCapture (hwnd);
+      return winMouseButtonsHandle (s_pScreen, ButtonPress, Button3, wParam);
+      
+    case WM_RBUTTONUP:
+      if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
+	break;
+      if (s_pScreenInfo->fRootless) ReleaseCapture ();
+      return winMouseButtonsHandle (s_pScreen, ButtonRelease, Button3, wParam);
+
+    case WM_TIMER:
+      if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
+	break;
+
+      /* Branch on the timer id */
+      switch (wParam)
+	{
+	case WIN_E3B_TIMER_ID:
+	  /* Send delayed button press */
+	  winMouseButtonsSendEvent (ButtonPress,
+				    s_pScreenPriv->iE3BCachedPress);
+
+	  /* Kill this timer */
+	  KillTimer (s_pScreenPriv->hwndScreen, WIN_E3B_TIMER_ID);
+
+	  /* Clear screen privates flags */
+	  s_pScreenPriv->iE3BCachedPress = 0;
+	  break;
+	}
+      return 0;
+
+    case WM_CTLCOLORSCROLLBAR:
+      FatalError ("winWindowProc - WM_CTLCOLORSCROLLBAR - We are not "
+		  "supposed to get this message.  Exiting.\n");
+      return 0;
+
+    case WM_MOUSEWHEEL:
+      if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
+	break;
+#if CYGDEBUG
+      ErrorF ("winWindowProc - WM_MOUSEWHEEL\n");
+#endif
+      winMouseWheel (s_pScreen, GET_WHEEL_DELTA_WPARAM(wParam));
+      break;
+
+    case WM_SETFOCUS:
+      if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
+	break;
+
+      /* Restore the state of all mode keys */
+      winRestoreModeKeyStates (s_pScreen);
+      return 0;
+
+    case WM_KILLFOCUS:
+      if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
+	break;
+
+      /* Store the state of all mode keys */
+      winStoreModeKeyStates (s_pScreen);
+
+      /* Release any pressed keys */
+      winKeybdReleaseKeys ();
+      return 0;
+
+#if WIN_NEW_KEYBOARD_SUPPORT
+    case WM_SYSKEYDOWN:
+    case WM_KEYDOWN:
+    case WM_SYSKEYUP:
+    case WM_KEYUP:
+      if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
+	break;
+
+      /* Don't process keys if we are not active */
+      if (!s_pScreenPriv->fActive)
+	return 0;
+
+      winProcessKeyEvent ((DWORD)wParam, (DWORD) lParam);
+      return 0;
+
+    case WM_DEADCHAR:
+    case WM_SYSDEADCHAR:
+      return 0;
+
+#else /* WIN_NEW_KEYBOARD_SUPPORT */
+    case WM_SYSKEYDOWN:
+    case WM_KEYDOWN:
+      if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
+	break;
+
+      /*
+       * FIXME: Catching Alt-F4 like this is really terrible.  This should
+       * be generalized to handle other Windows keyboard signals.  Actually,
+       * the list keys to catch and the actions to perform when caught should
+       * be configurable; that way user's can customize the keys that they
+       * need to have passed through to their window manager or apps, or they
+       * can remap certain actions to new key codes that do not conflict
+       * with the X apps that they are using.  Yeah, that'll take awhile.
+       */
+      if ((s_pScreenInfo->fUseWinKillKey && wParam == VK_F4
+	   && (GetKeyState (VK_MENU) & 0x8000))
+	  || (s_pScreenInfo->fUseUnixKillKey && wParam == VK_BACK
+	      && (GetKeyState (VK_MENU) & 0x8000)
+	      && (GetKeyState (VK_CONTROL) & 0x8000))) 
+	{
+	  /*
+	   * Better leave this message here, just in case some unsuspecting
+	   * user enters Alt + F4 and is surprised when the application
+	   * quits.
+	   */
+	  ErrorF ("winWindowProc - WM_*KEYDOWN - Closekey hit, quitting\n");
+	  
+	  /* Tell our message queue to give up */
+	  PostMessage (hwnd, WM_CLOSE, 0, 0);
+	  return 0;
+	}
+      
+      /*
+       * Don't do anything for the Windows keys, as focus will soon
+       * be returned to Windows.  We may be able to trap the Windows keys,
+       * but we should determine if that is desirable before doing so.
+       */
+      if (wParam == VK_LWIN || wParam == VK_RWIN)
+	break;
+
+      /* Discard fake Ctrl_L presses that precede AltGR on non-US keyboards */
+      if (winIsFakeCtrl_L (message, wParam, lParam))
+	return 0;
+      
+      /* Send the key event(s) */
+      winTranslateKey (wParam, lParam, &iScanCode);
+      for (i = 0; i < LOWORD(lParam); ++i)
+	winSendKeyEvent (iScanCode, TRUE);
+      return 0;
+
+    case WM_SYSKEYUP:
+    case WM_KEYUP:
+      if (s_pScreenPriv == NULL || s_pScreenInfo->fIgnoreInput)
+	break;
+
+      /*
+       * Don't do anything for the Windows keys, as focus will soon
+       * be returned to Windows.  We may be able to trap the Windows keys,
+       * but we should determine if that is desirable before doing so.
+       */
+      if (wParam == VK_LWIN || wParam == VK_RWIN)
+	break;
+
+      /* Ignore the fake Ctrl_L that follows an AltGr release */
+      if (winIsFakeCtrl_L (message, wParam, lParam))
+	return 0;
+
+      /* Enqueue a keyup event */
+      winTranslateKey (wParam, lParam, &iScanCode);
+      winSendKeyEvent (iScanCode, FALSE);
+      return 0;
+#endif /* WIN_NEW_KEYBOARD_SUPPORT */
+
+    case WM_HOTKEY:
+      if (s_pScreenPriv == NULL)
+	break;
+
+      /* Call the engine-specific hot key handler */
+      (*s_pScreenPriv->pwinHotKeyAltTab) (s_pScreen);
+      return 0;
+
+    case WM_ACTIVATE:
+      if (s_pScreenPriv == NULL
+	  || s_pScreenInfo->fIgnoreInput)
+	break;
+
+      /* TODO: Override display of window when we have a bad depth */
+      if (LOWORD(wParam) != WA_INACTIVE && s_pScreenPriv->fBadDepth)
+	{
+	  ErrorF ("winWindowProc - WM_ACTIVATE - Bad depth, trying "
+		  "to override window activation\n");
+
+	  /* Minimize the window */
+	  ShowWindow (hwnd, SW_MINIMIZE);
+
+	  /* Display dialog box */
+	  if (g_hDlgDepthChange != NULL)
+	    {
+	      /* Make the existing dialog box active */
+	      SetActiveWindow (g_hDlgDepthChange);
+	    }
+	  else
+	    {
+	      /* TODO: Recreate the dialog box and bring to the top */
+	      ShowWindow (g_hDlgDepthChange, SW_SHOWDEFAULT);
+	    }
+
+	  /* Don't do any other processing of this message */
+	  return 0;
+	}
+
+
+
+#if CYGDEBUG
+      ErrorF ("winWindowProc - WM_ACTIVATE\n");
+#endif
+
+      /*
+       * Focus is being changed to another window.
+       * The other window may or may not belong to
+       * our process.
+       */
+
+      /* Clear any lingering wheel delta */
+      s_pScreenPriv->iDeltaZ = 0;
+
+      /* Reshow the Windows mouse cursor if we are being deactivated */
+      if (LOWORD(wParam) == WA_INACTIVE
+	  && !s_fCursor)
+	{
+	  /* Show Windows cursor */
+	  s_fCursor = TRUE;
+	  ShowCursor (TRUE);
+	}
+      return 0;
+
+    case WM_ACTIVATEAPP:
+      if (s_pScreenPriv == NULL
+	  || s_pScreenInfo->fIgnoreInput)
+	break;
+
+#if CYGDEBUG
+      ErrorF ("winWindowProc - WM_ACTIVATEAPP\n");
+#endif
+
+      /* Activate or deactivate */
+      s_pScreenPriv->fActive = wParam;
+
+      /* Reshow the Windows mouse cursor if we are being deactivated */
+      if (!s_pScreenPriv->fActive
+	  && !s_fCursor)
+	{
+	  /* Show Windows cursor */
+	  s_fCursor = TRUE;
+	  ShowCursor (TRUE);
+	}
+
+      /* Call engine specific screen activation/deactivation function */
+      (*s_pScreenPriv->pwinActivateApp) (s_pScreen);
+      return 0;
+
+    case WM_CLOSE:
+      /* Tell X that we are giving up */
+      GiveUp (0);
+      return 0;
+    }
+
+  return DefWindowProc (hwnd, message, wParam, lParam);
+}
+
+
+/*
+ * Process messages for the dialog that is displayed for
+ * disruptive screen depth changes. 
+ */
+
+BOOL CALLBACK
+winChangeDepthDlgProc (HWND hwndDialog, UINT message,
+		       WPARAM wParam, LPARAM lParam)
+{
+  static winPrivScreenPtr	s_pScreenPriv = NULL;
+  static winScreenInfo		*s_pScreenInfo = NULL;
+  static ScreenPtr		s_pScreen = NULL;
+
+#if CYGDEBUG
+  ErrorF ("winChangeDepthDlgProc\n");
+#endif
+
+  /* Branch on message type */
+  switch (message)
+    {
+    case WM_INITDIALOG:
+#if CYGDEBUG
+      ErrorF ("winChangeDepthDlgProc - WM_INITDIALOG\n");
+#endif
+
+      /* Store pointers to private structures for future use */
+      s_pScreenPriv = (winPrivScreenPtr) lParam;
+      s_pScreenInfo = s_pScreenPriv->pScreenInfo;
+      s_pScreen = s_pScreenInfo->pScreen;
+
+#if CYGDEBUG
+      ErrorF ("winChangeDepthDlgProc - WM_INITDIALG - s_pScreenPriv: %08x, "
+	      "s_pScreenInfo: %08x, s_pScreen: %08x\n",
+	      s_pScreenPriv, s_pScreenInfo, s_pScreen);
+#endif
+
+#if CYGDEBUG
+      ErrorF ("winChangeDepthDlgProc - WM_INITDIALOG - orig bpp: %d, "
+	      "last bpp: %d\n",
+	      s_pScreenInfo->dwBPP,
+	      s_pScreenPriv->dwLastWindowsBitsPixel);
+#endif
+      return TRUE;
+
+    case WM_DISPLAYCHANGE:
+#if CYGDEBUG
+      ErrorF ("winChangeDepthDlgProc - WM_DISPLAYCHANGE - orig bpp: %d, "
+	      "last bpp: %d, new bpp: %d\n",
+	      s_pScreenInfo->dwBPP,
+	      s_pScreenPriv->dwLastWindowsBitsPixel,
+	      wParam);
+#endif
+
+      /* Dismiss the dialog if the display returns to the original depth */
+      if (wParam == s_pScreenInfo->dwBPP)
+	{
+	  ErrorF ("winChangeDelthDlgProc - wParam == s_pScreenInfo->dwBPP\n");
+
+	  /* Depth has been restored, dismiss dialog */
+	  DestroyWindow (g_hDlgDepthChange);
+	  g_hDlgDepthChange = NULL;
+
+	  /* Flag that we have a valid screen depth */
+	  s_pScreenPriv->fBadDepth = FALSE;
+	}
+      return TRUE;
+
+    case WM_COMMAND:
+      switch (LOWORD (wParam))
+	{
+	case IDOK:
+	case IDCANCEL:
+	  ErrorF ("winChangeDepthDlgProc - WM_COMMAND - IDOK or IDCANCEL\n");
+
+	  /* 
+	   * User dismissed the dialog, hide it until the
+	   * display mode is restored.
+	   */
+	  ShowWindow (g_hDlgDepthChange, SW_HIDE);
+	  return TRUE;
+	}
+      break;
+
+    case WM_CLOSE:
+      ErrorF ("winChangeDepthDlgProc - WM_CLOSE\n");
+
+      /* 
+       * User dismissed the dialog, hide it until the
+       * display mode is restored.
+       */
+      ShowWindow (g_hDlgDepthChange, SW_HIDE);
+      return TRUE;
+    }
+
+  return FALSE;
+}