update tcl/tk

1 files changed, 1017 insertions, 0 deletions

diff --git a/tk8.6/win/tkWinWindow.c b/tk8.6/win/tkWinWindow.c
new file mode 100644
index 0000000..385e72b
--- /dev/null
+++ b/tk8.6/win/tkWinWindow.c
@@ -0,0 +1,1017 @@
+/*
+ * tkWinWindow.c --
+ *
+ *	Xlib emulation routines for Windows related to creating, displaying
+ *	and destroying windows.
+ *
+ * Copyright (c) 1995-1997 Sun Microsystems, Inc.
+ *
+ * See the file "license.terms" for information on usage and redistribution of
+ * this file, and for a DISCLAIMER OF ALL WARRANTIES.
+ */
+
+#include "tkWinInt.h"
+#include "tkBusy.h"
+
+typedef struct ThreadSpecificData {
+    int initialized;		/* 0 means table below needs initializing. */
+    Tcl_HashTable windowTable;  /* The windowTable maps from HWND to Tk_Window
+				 * handles. */
+} ThreadSpecificData;
+static Tcl_ThreadDataKey dataKey;
+
+/*
+ * Forward declarations for functions defined in this file:
+ */
+
+static void		NotifyVisibility(XEvent *eventPtr, TkWindow *winPtr);
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tk_AttachHWND --
+ *
+ *	This function binds an HWND and a reflection function to the specified
+ *	Tk_Window.
+ *
+ * Results:
+ *	Returns an X Window that encapsulates the HWND.
+ *
+ * Side effects:
+ *	May allocate a new X Window. Also enters the HWND into the global
+ *	window table.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Window
+Tk_AttachHWND(
+    Tk_Window tkwin,
+    HWND hwnd)
+{
+    int new;
+    Tcl_HashEntry *entryPtr;
+    TkWinDrawable *twdPtr = (TkWinDrawable *) Tk_WindowId(tkwin);
+    ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
+	    Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
+
+    if (!tsdPtr->initialized) {
+	Tcl_InitHashTable(&tsdPtr->windowTable, TCL_ONE_WORD_KEYS);
+	tsdPtr->initialized = 1;
+    }
+
+    /*
+     * Allocate a new drawable if necessary. Otherwise, remove the previous
+     * HWND from from the window table.
+     */
+
+    if (twdPtr == NULL) {
+	twdPtr = ckalloc(sizeof(TkWinDrawable));
+	twdPtr->type = TWD_WINDOW;
+	twdPtr->window.winPtr = (TkWindow *) tkwin;
+    } else if (twdPtr->window.handle != NULL) {
+	entryPtr = Tcl_FindHashEntry(&tsdPtr->windowTable,
+		(char *)twdPtr->window.handle);
+	Tcl_DeleteHashEntry(entryPtr);
+    }
+
+    /*
+     * Insert the new HWND into the window table.
+     */
+
+    twdPtr->window.handle = hwnd;
+    entryPtr = Tcl_CreateHashEntry(&tsdPtr->windowTable, (char *)hwnd, &new);
+    Tcl_SetHashValue(entryPtr, tkwin);
+
+    return (Window)twdPtr;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tk_HWNDToWindow --
+ *
+ *	This function retrieves a Tk_Window from the window table given an
+ *	HWND.
+ *
+ * Results:
+ *	Returns the matching Tk_Window.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Tk_Window
+Tk_HWNDToWindow(
+    HWND hwnd)
+{
+    Tcl_HashEntry *entryPtr;
+    ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
+	    Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
+
+    if (!tsdPtr->initialized) {
+	Tcl_InitHashTable(&tsdPtr->windowTable, TCL_ONE_WORD_KEYS);
+	tsdPtr->initialized = 1;
+    }
+    entryPtr = Tcl_FindHashEntry(&tsdPtr->windowTable, (char *) hwnd);
+    if (entryPtr != NULL) {
+	return (Tk_Window) Tcl_GetHashValue(entryPtr);
+    }
+    return NULL;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * Tk_GetHWND --
+ *
+ *	This function extracts the HWND from an X Window.
+ *
+ * Results:
+ *	Returns the HWND associated with the Window.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+HWND
+Tk_GetHWND(
+    Window window)
+{
+    return ((TkWinDrawable *) window)->window.handle;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkpPrintWindowId --
+ *
+ *	This routine stores the string representation of the platform
+ *	dependent window handle for an X Window in the given buffer.
+ *
+ * Results:
+ *	Returns the result in the specified buffer.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TkpPrintWindowId(
+    char *buf,			/* Pointer to string large enough to hold the
+				 * hex representation of a pointer. */
+    Window window)		/* Window to be printed into buffer. */
+{
+    HWND hwnd = (window) ? Tk_GetHWND(window) : 0;
+
+    /*
+     * Use pointer representation, because Win64 is P64 (*not* LP64). Windows
+     * doesn't print the 0x for %p, so we do it.
+     * Bug 2026405: cygwin does output 0x for %p so test and recover.
+     */
+
+    sprintf(buf, "0x%p", hwnd);
+    if (buf[2] == '0' && buf[3] == 'x') {
+	sprintf(buf, "%p", hwnd);
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkpScanWindowId --
+ *
+ *	Given a string which represents the platform dependent window handle,
+ *	produce the X Window id for the window.
+ *
+ * Results:
+ *	The return value is normally TCL_OK; in this case *idPtr will be set
+ *	to the X Window id equivalent to string. If string is improperly
+ *	formed then TCL_ERROR is returned and an error message will be left in
+ *	the interp's result. If the number does not correspond to a Tk Window,
+ *	then *idPtr will be set to None.
+ *
+ * Side effects:
+ *	None.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+TkpScanWindowId(
+    Tcl_Interp *interp,		/* Interpreter to use for error reporting. */
+    const char *string,		/* String containing a (possibly signed)
+				 * integer in a form acceptable to strtol. */
+    Window *idPtr)		/* Place to store converted result. */
+{
+    Tk_Window tkwin;
+    union {
+	HWND hwnd;
+	int number;
+    } win;
+
+    /*
+     * We want sscanf for the 64-bit check, but if that doesn't work, then
+     * Tcl_GetInt manages the error correctly.
+     */
+
+    if (
+#ifdef _WIN64
+	    (sscanf(string, "0x%p", &win.hwnd) != 1) &&
+#endif
+	    Tcl_GetInt(interp, string, &win.number) != TCL_OK) {
+	return TCL_ERROR;
+    }
+
+    tkwin = Tk_HWNDToWindow(win.hwnd);
+    if (tkwin) {
+	*idPtr = Tk_WindowId(tkwin);
+    } else {
+	*idPtr = None;
+    }
+    return TCL_OK;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkpMakeWindow --
+ *
+ *	Creates a Windows window object based on the current attributes of the
+ *	specified TkWindow.
+ *
+ * Results:
+ *	Returns a pointer to a new TkWinDrawable cast to a Window.
+ *
+ * Side effects:
+ *	Creates a new window.
+ *
+ *----------------------------------------------------------------------
+ */
+
+Window
+TkpMakeWindow(
+    TkWindow *winPtr,
+    Window parent)
+{
+    HWND parentWin;
+    int style;
+    HWND hwnd;
+
+    if (parent != None) {
+	parentWin = Tk_GetHWND(parent);
+	style = WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
+    } else {
+	parentWin = NULL;
+	style = WS_POPUP | WS_CLIPCHILDREN;
+    }
+
+    /*
+     * Create the window, then ensure that it is at the top of the stacking
+     * order.
+     */
+
+    hwnd = CreateWindowEx(WS_EX_NOPARENTNOTIFY, TK_WIN_CHILD_CLASS_NAME, NULL,
+	    (DWORD) style, Tk_X(winPtr), Tk_Y(winPtr), Tk_Width(winPtr),
+	    Tk_Height(winPtr), parentWin, NULL, Tk_GetHINSTANCE(), NULL);
+    SetWindowPos(hwnd, HWND_TOP, 0, 0, 0, 0,
+	    SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
+    return Tk_AttachHWND((Tk_Window)winPtr, hwnd);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * XDestroyWindow --
+ *
+ *	Destroys the given window.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Sends the WM_DESTROY message to the window and then destroys it the
+ *	Win32 resources associated with the window.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+XDestroyWindow(
+    Display *display,
+    Window w)
+{
+    Tcl_HashEntry *entryPtr;
+    TkWinDrawable *twdPtr = (TkWinDrawable *)w;
+    TkWindow *winPtr = TkWinGetWinPtr(w);
+    HWND hwnd = Tk_GetHWND(w);
+    ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
+	    Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
+
+    display->request++;
+
+    /*
+     * Remove references to the window in the pointer module then release the
+     * drawable.
+     */
+
+    TkPointerDeadWindow(winPtr);
+
+    entryPtr = Tcl_FindHashEntry(&tsdPtr->windowTable, (char*)hwnd);
+    if (entryPtr != NULL) {
+	Tcl_DeleteHashEntry(entryPtr);
+    }
+
+    ckfree(twdPtr);
+
+    /*
+     * Don't bother destroying the window if we are going to destroy the
+     * parent later.
+     */
+
+    if (hwnd != NULL && !(winPtr->flags & TK_DONT_DESTROY_WINDOW)) {
+	DestroyWindow(hwnd);
+    }
+    return Success;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * XMapWindow --
+ *
+ *	Cause the given window to become visible.
+ *
+ * Results:
+ *	None
+ *
+ * Side effects:
+ *	Causes the window state to change, and generates a MapNotify event.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+XMapWindow(
+    Display *display,
+    Window w)
+{
+    XEvent event;
+    TkWindow *parentPtr;
+    TkWindow *winPtr = TkWinGetWinPtr(w);
+
+    display->request++;
+
+    ShowWindow(Tk_GetHWND(w), SW_SHOWNORMAL);
+    winPtr->flags |= TK_MAPPED;
+
+    /*
+     * Check to see if this window is visible now. If all of the parent
+     * windows up to the first toplevel are mapped, then this window and its
+     * mapped children have just become visible.
+     */
+
+    if (!(winPtr->flags & TK_TOP_HIERARCHY)) {
+	for (parentPtr = winPtr->parentPtr; ;
+		parentPtr = parentPtr->parentPtr) {
+	    if ((parentPtr == NULL) || !(parentPtr->flags & TK_MAPPED)) {
+		return Success;
+	    }
+	    if (parentPtr->flags & TK_TOP_HIERARCHY) {
+		break;
+	    }
+	}
+    } else {
+	event.type = MapNotify;
+	event.xmap.serial = display->request;
+	event.xmap.send_event = False;
+	event.xmap.display = display;
+	event.xmap.event = winPtr->window;
+	event.xmap.window = winPtr->window;
+	event.xmap.override_redirect = winPtr->atts.override_redirect;
+	Tk_QueueWindowEvent(&event, TCL_QUEUE_TAIL);
+    }
+
+    /*
+     * Generate VisibilityNotify events for this window and its mapped
+     * children.
+     */
+
+    event.type = VisibilityNotify;
+    event.xvisibility.serial = display->request;
+    event.xvisibility.send_event = False;
+    event.xvisibility.display = display;
+    event.xvisibility.window = winPtr->window;
+    event.xvisibility.state = VisibilityUnobscured;
+    NotifyVisibility(&event, winPtr);
+    return Success;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * NotifyVisibility --
+ *
+ *	This function recursively notifies the mapped children of the
+ *	specified window of a change in visibility. Note that we don't
+ *	properly report the visibility state, since Windows does not provide
+ *	that info. The eventPtr argument must point to an event that has been
+ *	completely initialized except for the window slot.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Generates lots of events.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+NotifyVisibility(
+    XEvent *eventPtr,		/* Initialized VisibilityNotify event. */
+    TkWindow *winPtr)		/* Window to notify. */
+{
+    if (winPtr->atts.event_mask & VisibilityChangeMask) {
+	eventPtr->xvisibility.window = winPtr->window;
+	Tk_QueueWindowEvent(eventPtr, TCL_QUEUE_TAIL);
+    }
+    for (winPtr = winPtr->childList; winPtr != NULL;
+	    winPtr = winPtr->nextPtr) {
+	if (winPtr->flags & TK_MAPPED) {
+	    NotifyVisibility(eventPtr, winPtr);
+	}
+    }
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * XUnmapWindow --
+ *
+ *	Cause the given window to become invisible.
+ *
+ * Results:
+ *	None
+ *
+ * Side effects:
+ *	Causes the window state to change, and generates an UnmapNotify event.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+XUnmapWindow(
+    Display *display,
+    Window w)
+{
+    XEvent event;
+    TkWindow *winPtr = TkWinGetWinPtr(w);
+
+    display->request++;
+
+    /*
+     * Bug fix: Don't short circuit this routine based on TK_MAPPED because it
+     * will be cleared before XUnmapWindow is called.
+     */
+
+    ShowWindow(Tk_GetHWND(w), SW_HIDE);
+    winPtr->flags &= ~TK_MAPPED;
+
+    if (winPtr->flags & TK_WIN_MANAGED) {
+	event.type = UnmapNotify;
+	event.xunmap.serial = display->request;
+	event.xunmap.send_event = False;
+	event.xunmap.display = display;
+	event.xunmap.event = winPtr->window;
+	event.xunmap.window = winPtr->window;
+	event.xunmap.from_configure = False;
+	Tk_HandleEvent(&event);
+    }
+    return Success;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * XMoveResizeWindow --
+ *
+ *	Move and resize a window relative to its parent.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Repositions and resizes the specified window.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+XMoveResizeWindow(
+    Display *display,
+    Window w,
+    int x, int y,		/* Position relative to parent. */
+    unsigned int width, unsigned int height)
+{
+    display->request++;
+    MoveWindow(Tk_GetHWND(w), x, y, (int) width, (int) height, TRUE);
+    return Success;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * XMoveWindow --
+ *
+ *	Move a window relative to its parent.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Repositions the specified window.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+XMoveWindow(
+    Display *display,
+    Window w,
+    int x, int y)		/* Position relative to parent */
+{
+    TkWindow *winPtr = TkWinGetWinPtr(w);
+
+    display->request++;
+
+    MoveWindow(Tk_GetHWND(w), x, y, winPtr->changes.width,
+	    winPtr->changes.height, TRUE);
+    return Success;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * XResizeWindow --
+ *
+ *	Resize a window.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Resizes the specified window.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+XResizeWindow(
+    Display *display,
+    Window w,
+    unsigned int width, unsigned int height)
+{
+    TkWindow *winPtr = TkWinGetWinPtr(w);
+
+    display->request++;
+
+    MoveWindow(Tk_GetHWND(w), winPtr->changes.x, winPtr->changes.y, (int)width,
+	    (int)height, TRUE);
+    return Success;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * XRaiseWindow, XLowerWindow --
+ *
+ *	Change the stacking order of a window.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Changes the stacking order of the specified window.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+XRaiseWindow(
+    Display *display,
+    Window w)
+{
+    HWND window = Tk_GetHWND(w);
+
+    display->request++;
+    SetWindowPos(window, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
+    return Success;
+}
+
+int
+XLowerWindow(
+    Display *display,
+    Window w)
+{
+    HWND window = Tk_GetHWND(w);
+
+    display->request++;
+    SetWindowPos(window, HWND_BOTTOM, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
+    return Success;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * XConfigureWindow --
+ *
+ *	Change the size, position, stacking, or border of the specified
+ *	window.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Changes the attributes of the specified window. Note that we ignore
+ *	the passed in values and use the values stored in the TkWindow data
+ *	structure.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+XConfigureWindow(
+    Display *display,
+    Window w,
+    unsigned int valueMask,
+    XWindowChanges *values)
+{
+    TkWindow *winPtr = TkWinGetWinPtr(w);
+    HWND hwnd = Tk_GetHWND(w);
+
+    display->request++;
+
+    /*
+     * Change the shape and/or position of the window.
+     */
+
+    if (valueMask & (CWX|CWY|CWWidth|CWHeight)) {
+	MoveWindow(hwnd, winPtr->changes.x, winPtr->changes.y,
+		winPtr->changes.width, winPtr->changes.height, TRUE);
+    }
+
+    /*
+     * Change the stacking order of the window.
+     */
+
+    if (valueMask & CWStackMode) {
+	HWND sibling;
+
+	if ((valueMask & CWSibling) && (values->sibling != None)) {
+	    sibling = Tk_GetHWND(values->sibling);
+	} else {
+	    sibling = NULL;
+	}
+	TkWinSetWindowPos(hwnd, sibling, values->stack_mode);
+    }
+    return Success;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * XClearWindow --
+ *
+ *	Clears the entire window to the current background color.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Erases the current contents of the window.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+XClearWindow(
+    Display *display,
+    Window w)
+{
+    RECT rc;
+    HBRUSH brush;
+    HPALETTE oldPalette, palette;
+    TkWindow *winPtr;
+    HWND hwnd = Tk_GetHWND(w);
+    HDC dc = GetDC(hwnd);
+
+    palette = TkWinGetPalette(display->screens[0].cmap);
+    oldPalette = SelectPalette(dc, palette, FALSE);
+
+    display->request++;
+
+    winPtr = TkWinGetWinPtr(w);
+    brush = CreateSolidBrush(winPtr->atts.background_pixel);
+    GetWindowRect(hwnd, &rc);
+    rc.right = rc.right - rc.left;
+    rc.bottom = rc.bottom - rc.top;
+    rc.left = rc.top = 0;
+    FillRect(dc, &rc, brush);
+
+    DeleteObject(brush);
+    SelectPalette(dc, oldPalette, TRUE);
+    ReleaseDC(hwnd, dc);
+    return Success;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * XChangeWindowAttributes --
+ *
+ *	This function is called when the attributes on a window are updated.
+ *	Since Tk maintains all of the window state, the only relevant value is
+ *	the cursor.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	May cause the mouse position to be updated.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+XChangeWindowAttributes(
+    Display *display,
+    Window w,
+    unsigned long valueMask,
+    XSetWindowAttributes* attributes)
+{
+    if (valueMask & CWCursor) {
+	XDefineCursor(display, w, attributes->cursor);
+    }
+    return Success;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * XReparentWindow --
+ *
+ *	TODO: currently placeholder to satisfy Xlib stubs.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	TODO.
+ *
+ *----------------------------------------------------------------------
+ */
+
+int
+XReparentWindow(
+    Display *display,
+    Window w,
+    Window parent,
+    int x,
+    int y)
+{
+    return BadWindow;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkWinSetWindowPos --
+ *
+ *	Adjust the stacking order of a window relative to a second window (or
+ *	NULL).
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Moves the specified window in the stacking order.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TkWinSetWindowPos(
+    HWND hwnd,			/* Window to restack. */
+    HWND siblingHwnd,		/* Sibling window. */
+    int pos)			/* One of Above or Below. */
+{
+    HWND temp;
+
+    /*
+     * Since Windows does not support Above mode, we place the specified
+     * window below the sibling and then swap them.
+     */
+
+    if (siblingHwnd) {
+	if (pos == Above) {
+	    SetWindowPos(hwnd, siblingHwnd, 0, 0, 0, 0,
+		    SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
+	    temp = hwnd;
+	    hwnd = siblingHwnd;
+	    siblingHwnd = temp;
+	}
+    } else {
+	siblingHwnd = (pos == Above) ? HWND_TOP : HWND_BOTTOM;
+    }
+
+    SetWindowPos(hwnd, siblingHwnd, 0, 0, 0, 0,
+	    SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkpShowBusyWindow --
+ *
+ *	Makes a busy window "appear".
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Arranges for the busy window to start intercepting events and the
+ *	cursor to change to the configured "hey, I'm busy!" setting.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TkpShowBusyWindow(
+    TkBusy busy)
+{
+    Busy *busyPtr = (Busy *) busy;
+    HWND hWnd;
+    POINT point;
+    Display *display;
+    Window window;
+
+    if (busyPtr->tkBusy != NULL) {
+	Tk_MapWindow(busyPtr->tkBusy);
+	window = Tk_WindowId(busyPtr->tkBusy);
+	display = Tk_Display(busyPtr->tkBusy);
+	hWnd = Tk_GetHWND(window);
+	display->request++;
+	SetWindowPos(hWnd, HWND_TOP, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
+    }
+
+    /*
+     * Under Win32, cursors aren't associated with windows. Tk fakes this by
+     * watching Motion events on its windows. So Tk will automatically change
+     * the cursor when the pointer enters the Busy window. But Windows does
+     * not immediately change the cursor; it waits for the cursor position to
+     * change or a system call. We need to change the cursor before the
+     * application starts processing, so set the cursor position redundantly
+     * back to the current position.
+     */
+
+    GetCursorPos(&point);
+    SetCursorPos(point.x, point.y);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkpHideBusyWindow --
+ *
+ *	Makes a busy window "disappear".
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Arranges for the busy window to stop intercepting events, and the
+ *	cursor to change back to its normal setting.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TkpHideBusyWindow(
+    TkBusy busy)
+{
+    Busy *busyPtr = (Busy *) busy;
+    POINT point;
+
+    if (busyPtr->tkBusy != NULL) {
+	Tk_UnmapWindow(busyPtr->tkBusy);
+    }
+
+    /*
+     * Under Win32, cursors aren't associated with windows. Tk fakes this by
+     * watching Motion events on its windows. So Tk will automatically change
+     * the cursor when the pointer enters the Busy window. But Windows does
+     * not immediately change the cursor: it waits for the cursor position to
+     * change or a system call. We need to change the cursor before the
+     * application starts processing, so set the cursor position redundantly
+     * back to the current position.
+     */
+
+    GetCursorPos(&point);
+    SetCursorPos(point.x, point.y);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkpMakeTransparentWindowExist --
+ *
+ *	Construct the platform-specific resources for a transparent window.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Moves the specified window in the stacking order.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TkpMakeTransparentWindowExist(
+    Tk_Window tkwin,		/* Token for window. */
+    Window parent)		/* Parent window. */
+{
+    TkWindow *winPtr = (TkWindow *) tkwin;
+    HWND hParent = (HWND) parent, hWnd;
+    int style = WS_CHILD | WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
+    DWORD exStyle = WS_EX_TRANSPARENT | WS_EX_TOPMOST;
+
+    hWnd = CreateWindowEx(exStyle, TK_WIN_CHILD_CLASS_NAME, NULL, style,
+	    Tk_X(tkwin), Tk_Y(tkwin), Tk_Width(tkwin), Tk_Height(tkwin),
+	    hParent, NULL, Tk_GetHINSTANCE(), NULL);
+    winPtr->window = Tk_AttachHWND(tkwin, hWnd);
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
+ * TkpCreateBusy --
+ *
+ *	Construct the platform-specific parts of a busy window. Note that this
+ *	postpones the actual creation of the window resource until later.
+ *
+ * Results:
+ *	None.
+ *
+ * Side effects:
+ *	Sets up part of the busy window structure.
+ *
+ *----------------------------------------------------------------------
+ */
+
+void
+TkpCreateBusy(
+    Tk_FakeWin *winPtr,
+    Tk_Window tkRef,
+    Window *parentPtr,
+    Tk_Window tkParent,
+    TkBusy busy)
+{
+    Busy *busyPtr = (Busy *) busy;
+
+    if (winPtr->flags & TK_REPARENTED) {
+	/*
+	 * This works around a bug in the implementation of menubars for
+	 * non-Macintosh window systems (Win32 and X11). Tk doesn't reset the
+	 * pointers to the parent window when the menu is reparented
+	 * (winPtr->parentPtr points to the wrong window). We get around this
+	 * by determining the parent via the native API calls.
+	 */
+
+	HWND hWnd = GetParent(Tk_GetHWND(Tk_WindowId(tkRef)));
+	RECT rect;
+
+	if (GetWindowRect(hWnd, &rect)) {
+	    busyPtr->width = rect.right - rect.left;
+	    busyPtr->height = rect.bottom - rect.top;
+	}
+    } else {
+	*parentPtr = Tk_WindowId(tkParent);
+	*parentPtr = (Window) Tk_GetHWND(*parentPtr);
+    }
+}
+
+/*
+ * Local Variables:
+ * mode: c
+ * c-basic-offset: 4
+ * fill-column: 78
+ * End:
+ */