Beispiel #1
0
        internal static string GetItemToolTipText(IntPtr hwnd, IntPtr hwndToolTip, int item)
        {
            if (hwndToolTip != IntPtr.Zero)
            {
                // We've found the tooltip window, so we won't need to scan for it.

                // Got a tooltip window - use it.
                NativeMethods.TOOLINFO tool = new NativeMethods.TOOLINFO();
                tool.Init(Marshal.SizeOf(typeof(NativeMethods.TOOLINFO)));

                tool.hwnd = hwnd;
                tool.uId = item;

                return XSendMessage.GetItemText(hwndToolTip, tool);
            }
            else
            {
                // Control doesn't know its tooltip window - instead scan for one...

                // Enum the top-level windows owned by this thread...
                uint processId;
                uint threadId = GetWindowThreadProcessId(hwnd, out processId);

                UnsafeNativeMethods.ENUMTOOLTIPWINDOWINFO info = new UnsafeNativeMethods.ENUMTOOLTIPWINDOWINFO();
                info.hwnd = hwnd;
                info.id = item;
                info.name = "";

                UnsafeNativeMethods.EnumThreadWndProc enumToolTipWindows = new UnsafeNativeMethods.EnumThreadWndProc(EnumToolTipWindows);
                GCHandle gch = GCHandle.Alloc(enumToolTipWindows);
                UnsafeNativeMethods.EnumThreadWindows(threadId, enumToolTipWindows, ref info);
                gch.Free();

                return info.name;
            }
        }
Beispiel #2
0
        // ------------------------------------------------------
        //
        // Private Methods
        //
        // ------------------------------------------------------

        #region Private Methods

        private static bool EnumToolTipWindows(IntPtr hwnd, ref UnsafeNativeMethods.ENUMTOOLTIPWINDOWINFO lParam)
        {
            // Use ProxyGetClassName here instead of GetClassName(),
            // since for a [....] tooltip the latter will return
            // "WindowsForms10.tooltips_class32.app.0.b7ab7b".
            // Instead, ProxyGetClassName uses WM_GETOBJECT with
            // OBJID_QUERYCLASSNAMEIDX, which will return the correct answer.
            if (!ProxyGetClassName(hwnd).Equals("tooltips_class32"))
            {
                return true;
            }

            NativeMethods.TOOLINFO tool = new NativeMethods.TOOLINFO();
            tool.Init(Marshal.SizeOf(typeof(NativeMethods.TOOLINFO)));
            // For tooltips with ids of 0, MFC will create the tooltip with the flag of TTF_IDISHWND.
            // TTF_IDISHWND indicates that the uId member is the window handle to the tool.
            if (lParam.id == 0)
            {
                tool.hwnd = Misc.GetParent(lParam.hwnd);
                tool.uId = unchecked((int)lParam.hwnd);
                tool.uFlags = NativeMethods.TTF_IDISHWND;
            }
            else
            {
                tool.hwnd = lParam.hwnd;
                tool.uId = lParam.id;
            }

            string name = XSendMessage.GetItemText(hwnd, tool);

            // Didn't get anything - continue looking...
            if (string.IsNullOrEmpty(name))
            {
                return true;
            }

            lParam.name = name;

            // Got it - can stop iterating now.
            return false;
        }