Пример #1
0
        private void _adjustUi(IntPtr hDlg, IntPtr lpData)
        {
            // Only do the adjustments if InitData was supplied
            if (lpData == IntPtr.Zero)
            {
                return;
            }
            object obj = Marshal.PtrToStructure(lpData, typeof(InitData));

            if (obj == null)
            {
                return;
            }
            InitData initdata = (InitData)obj;

            // Only do the adjustments if we can find the dirtree control
            IntPtr hTree = Win32.GetDlgItem(hDlg, CtlIds.TREEVIEW);

            if (hTree == IntPtr.Zero)
            {
                hTree = Win32.FindWindowEx(IntPtr.Zero, IntPtr.Zero, "SysTreeView32", IntPtr.Zero);
                if (hTree == IntPtr.Zero)
                {
                    // This usually means that BIF_NEWDIALOGSTYLE is enabled.
                    hTree = Win32.FindWindowEx(hDlg, IntPtr.Zero, "SHBrowseForFolder ShellNameSpace Control", IntPtr.Zero);
                }
            }
            if (hTree == IntPtr.Zero)
            {
                return;
            }

            // Prep the basic UI
            Win32.SendMessage(hDlg, Win32.BFFM_SETSELECTIONW, 1, initdata.InitialPath);
            Win32.SetWindowText(hDlg, initdata.Title);

            if (initdata.StartPosition == FormStartPosition.CenterParent)
            {
                _centerTo(hDlg, initdata.hParent);
            }
            else if (initdata.StartPosition == FormStartPosition.CenterScreen)
            {
                _centerTo(hDlg, Win32.GetDesktopWindow());
            }
            // else we do nothing

            // Prep the edit box
            Win32.RECT rcEdit = new Win32.RECT();
            IntPtr     hEdit  = Win32.GetDlgItem(hDlg, CtlIds.PATH_EDIT);

            if (hEdit != IntPtr.Zero)
            {
                if (initdata.ShowEditbox)
                {
                    Win32.GetWindowRect(hEdit, out rcEdit);
                    Win32.ScreenToClient(hEdit, ref rcEdit);
                }
                else
                {
                    Win32.ShowWindow(hEdit, Win32.SW_HIDE);
                }
            }

            // make the dialog larger
            Win32.RECT rcDlg;
            Win32.GetWindowRect(hDlg, out rcDlg);
            rcDlg.Right  += 40;
            rcDlg.Bottom += 30;
            if (hEdit != IntPtr.Zero)
            {
                rcDlg.Bottom += (rcEdit.Height + 5);
            }
            Win32.MoveWindow(hDlg, rcDlg, true);
            Win32.GetClientRect(hDlg, out rcDlg);

            int vMargin = 10;
            // Accomodate the resizing handle's width
            int hMargin = 10;// SystemInformation.VerticalScrollBarWidth;

            // Move the Cancel button
            Win32.RECT rcCancel = new Win32.RECT();
            IntPtr     hCancel  = Win32.GetDlgItem(hDlg, CtlIds.IDCANCEL);

            if (hCancel != IntPtr.Zero)
            {
                Win32.GetWindowRect(hCancel, out rcCancel);
                Win32.ScreenToClient(hDlg, ref rcCancel);

                rcCancel = new Win32.RECT(rcDlg.Right - (rcCancel.Width + hMargin),
                                          rcDlg.Bottom - (rcCancel.Height + vMargin),
                                          rcCancel.Width,
                                          rcCancel.Height);

                Win32.MoveWindow(hCancel, rcCancel, false);
            }

            // Move the OK button
            Win32.RECT rcOK = new Win32.RECT();
            IntPtr     hOK  = Win32.GetDlgItem(hDlg, CtlIds.IDOK);

            if (hOK != IntPtr.Zero)
            {
                Win32.GetWindowRect(hOK, out rcOK);
                Win32.ScreenToClient(hDlg, ref rcOK);

                rcOK = new Win32.RECT(rcCancel.Left - (rcCancel.Width + hMargin),
                                      rcCancel.Top,
                                      rcOK.Width,
                                      rcOK.Height);

                Win32.MoveWindow(hOK, rcOK, false);
            }

            // Manage the "Make New Folder" button
            IntPtr hBtn = Win32.GetDlgItem(hDlg, CtlIds.NEW_FOLDER_BUTTON);

            if (!initdata.ShowNewFolderButton)
            {
                // Make sure this button is not visible
                Win32.ShowWindow(hBtn, Win32.SW_HIDE);
            }
            else if (hBtn == IntPtr.Zero)
            {
                // Create a button - button is only auto-created under BIF_NEWDIALOGSTYLE
                // This is failing, and I don't know why!
                hBtn = Win32.CreateWindowEx(0x50010000,
                                            "button",
                                            "&Make New Folder",
                                            0x00000004,
                                            hMargin,
                                            rcOK.Top,
                                            105,
                                            rcOK.Height,
                                            hDlg,
                                            new IntPtr(CtlIds.NEW_FOLDER_BUTTON),
                                            Process.GetCurrentProcess().Handle,
                                            IntPtr.Zero);
            }

            // Position the path editbox and it's label
            // We'll repurpose the Title (static) control as the editbox label
            int treeTop = vMargin;

            if (hEdit != IntPtr.Zero)
            {
                int    xEdit  = hMargin;
                int    cxEdit = rcDlg.Width - (2 * hMargin);
                IntPtr hLabel = Win32.GetDlgItem(hDlg, CtlIds.TITLE);
                if (hLabel != IntPtr.Zero)
                {
                    string labelText = "Folder: ";
                    Win32.SetWindowText(hLabel, labelText);

                    // This code obtains the required size of the static control that serves as the label for the editbox.
                    // All this GDI code is a bit excessive, but I figured "what the hell".
                    IntPtr hdc     = Win32.GetDC(hLabel);
                    IntPtr hFont   = Win32.SendMessage(hLabel, Win32.WM_GETFONT, IntPtr.Zero, IntPtr.Zero);
                    IntPtr oldfnt  = Win32.SelectObject(hdc, hFont);
                    Size   szLabel = Size.Empty;
                    Win32.GetTextExtentPoint32(hdc, labelText, labelText.Length, out szLabel);
                    Win32.SelectObject(hdc, oldfnt);
                    Win32.ReleaseDC(hLabel, hdc);

                    Win32.RECT rcLabel = new Win32.RECT(hMargin,
                                                        vMargin + ((rcEdit.Height - szLabel.Height) / 2),
                                                        szLabel.Width,
                                                        szLabel.Height);
                    Win32.MoveWindow(hLabel, rcLabel, false);

                    xEdit  += rcLabel.Width;
                    cxEdit -= rcLabel.Width;
                }

                // Expand the folder tree to fill the dialog
                rcEdit = new Win32.RECT(xEdit,
                                        vMargin,
                                        cxEdit,
                                        rcEdit.Height);

                Win32.MoveWindow(hEdit, rcEdit, false);
                treeTop = rcEdit.Bottom + 5;
            }

            Win32.RECT rcTree = new Win32.RECT(hMargin,
                                               treeTop,
                                               rcDlg.Width - (2 * hMargin),
                                               rcDlg.Bottom - (treeTop + (2 * vMargin) + rcOK.Height));

            Win32.MoveWindow(hTree, rcTree, false);
        }